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KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A85001 & UP) – PDF DOWNLOAD
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- KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL
- SERIAL NUMBER:A85001 & UP
- PUBLICATION NUMBER:CEBM005302
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KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A85001 & UP)
KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A85001 & UP) – PDF DOWNLOAD:
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KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A85001 & UP)
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity.
- This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following sections. These sections are further divided into each main group of components.
- GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts. - STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the structure, but also serves as reference material for troubleshooting. - TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this section. - DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations. - MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
KOMATSU AVANCE PC400LC-6LM PC400HD-6LM HYDRAULIC EXCAVATOR SERVICE REPAIR MANUAL (SN:A85001 & UP)
MAIN MENU................................................................................................................................ 0 COVER.................................................................................................................................... 1 CONTENTS................................................................................................................................. 2 SAFETY................................................................................................................................... 13 SAFETY NOTICE........................................................................................................................ 13 IMPORTANT SAFETY NOTICE.......................................................................................................... 13 GENERAL PRECAUTIONS.............................................................................................................. 13 PREPARATIONS FOR WORK............................................................................................................ 13 PRECAUTIONS DURING WORK.......................................................................................................... 13 FOREWORD................................................................................................................................. 15 GENERAL.............................................................................................................................. 15 HOW TO READ THE SHOP MANUAL.......................................................................................................... 16 VOLUMES.......................................................................................................................... 16 DISTRIBUTION AND UPDATING........................................................................................................ 16 FILING METHOD.................................................................................................................... 16 REVISED EDITION MARK............................................................................................................. 16 REVISIONS........................................................................................................................ 16 SYMBOLS.......................................................................................................................... 16 HOISTING INSTRUCTIONS................................................................................................................ 17 HOISTING......................................................................................................................... 17 WIRE ROPES....................................................................................................................... 17 COATING MATERIALS.................................................................................................................... 18 STANDARD TIGHTENING TORQUE........................................................................................................... 20 STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS..................................................................................... 20 TIGHTENING TORQUE OF HOSE NUTS................................................................................................... 21 TIGHTENING TORQUE OF SPLIT FLANGE BOLTS.......................................................................................... 21 TIGHTENING TORQUE FOR FLARED NUTS................................................................................................ 21 ALTERNATIVE FASTENERS............................................................................................................ 22 BOLT IDENTIFICATION CHART.................................................................................................... 22 GRADE 5 AND 8 NONPHOSPHATE COATED HARDWARE.................................................................................. 23 GRADE 8 PHOSPHATE COATED HARDWARE............................................................................................ 24 STANDARD METRIC FASTENERS.................................................................................................... 24 HYDRAULIC TUBES AND FITTINGS................................................................................................. 25 HOSE CLAMPS.................................................................................................................. 25 SPLIT FLANGE CONNECTIONS..................................................................................................... 25 ELECTRIC WIRE CODE................................................................................................................... 26 CLASSIFICATION BY THICKNESS...................................................................................................... 26 CLASSIFICATION BY COLOR AND CODE................................................................................................. 26 CONVERSION TABLES.................................................................................................................... 27 METHOD OF USING THE CONVERSION TABLE............................................................................................. 27 01 GENERAL............................................................................................................................... 33 SPECIFICATION DRAWINGS............................................................................................................... 34 MACHINE.......................................................................................................................... 34 WORK EQUIPMENT....................................................................................................................... 36 SPECIFICATIONS....................................................................................................................... 38 WEIGHT TABLE......................................................................................................................... 40 FUEL COOLANT AND LUBRICANTS.......................................................................................................... 42 ENGINE OIL SPECIFICATIONS........................................................................................................ 43 NORMAL OPERATION............................................................................................................. 43 ARCTIC OPERATION............................................................................................................. 43 FINAL DRIVE OIL SPECIFICATIONS............................................................................................... 44 COOLANT SPECIFICATIONS........................................................................................................... 45 10 STRUCTURE AND FUNCTION................................................................................................................ 51 PARTS RELATED TO ENGINE.............................................................................................................. 52 RADIATOR, OIL COOLER................................................................................................................. 54 POWER TRAIN.......................................................................................................................... 55 FINAL DRIVE.......................................................................................................................... 56 SWING CIRCLE......................................................................................................................... 57 SWING MACHINERY...................................................................................................................... 58 TRACK FRAME, RECOIL SPRING........................................................................................................... 59 PC400LC-6LM...................................................................................................................... 59 TRACK FRAME, RECOIL SPRING........................................................................................................... 60 PC400LC-6LM - Variable Gauge..................................................................................................... 60 TRACK FRAME, RECOIL SPRING........................................................................................................... 61 PC400HD-6LM...................................................................................................................... 61 TRACK SHOE........................................................................................................................... 62 HYDRAULIC PIPING DRAWING............................................................................................................. 63 HYDRAULIC CIRCUIT DIAGRAM............................................................................................................ 64 HYDRAULIC TANK, HYDRAULIC FILTER..................................................................................................... 65 HYDRAULIC PUMP....................................................................................................................... 66 MAIN PUMP........................................................................................................................ 67 TVC, LS VALVE.................................................................................................................... 72 CONTROL VALVE........................................................................................................................ 86 STANDARD AND 2 SERVICE VALVES.................................................................................................... 86 MAIN STRUCTURE OF 9 SPOOL VALVE (1/4)........................................................................................ 87 MAIN STRUCTURE OF 9 SPOOL VALVE (2/4)........................................................................................ 88 MAIN STRUCTURE OF 9 SPOOL VALVE (3/4)........................................................................................ 89 MAIN STRUCTURE OF 9 SPOOL VALVE (4/4)........................................................................................ 90 9 SPOOL VALVE - STD AND 2 SERVICE VALVES......................................................................................... 92 8 SPOOL VALVE - STD AND 1 SERVICE VALVES..................................................................................... 93 7 SPOOL VALVE - STD.......................................................................................................... 94 SELF REDUCING PRESSURE VALVE......................................................................................................... 95 STRUCTURE........................................................................................................................ 95 WHEN ENGINE IS STOPPED....................................................................................................... 97 AT NEUTRAL AND WHEN LOAD PRESSURE P2 IS LOW.................................................................................. 98 WHEN LOAD PRESSURE P2 IS HIGH................................................................................................ 98 WHEN THERE IS ABNORMAL HIGH PRESSURE......................................................................................... 99 SUCTION SAFETY VALVE.................................................................................................................100 FOR SERVICE VALVE................................................................................................................100 CLSS.................................................................................................................................101 OUTLINE OF CLSS..................................................................................................................101 BASIC PRINCIPLE..................................................................................................................102 CONTROL OF PUMP SWASH PLATE ANGLE............................................................................................102 PRESSURE COMPENSATION........................................................................................................103 WHEN UNLOAD VALVE IS ACTUATED....................................................................................................107 CUT-OFF CONTROL ACTUATED.....................................................................................................108 CUT-OFF CANCELED.............................................................................................................108 INTRODUCTION OF LS PRESSURE......................................................................................................109 LS BYPASS VALVE..................................................................................................................110 PRESSURE COMPENSATION VALVE......................................................................................................111 SHUTTLE VALVE INSIDE PRESSURE COMPENSATION VALVE.................................................................................114 VARIABLE TYPE PRESSURE COMPENSATION VALVE (FOR SERVICE VALVE)....................................................................116 BOOM REGENERATION CIRCUIT........................................................................................................117 ARM REGENERATION CIRCUIT.........................................................................................................119 MERGE FLOW DIVIDER VALVE.........................................................................................................120 LS SELECT VALVE..................................................................................................................122 2-STAGE SAFETY VALVE (INSTALLED TO BOOM CYLINDER HEAD)...........................................................................123 WHEN ALL WORK EQUIPMENT IS AT NEUTRAL (10-75)................................................................................124 WHEN PUMP FLOW MERGED, BUCKET CURL OPERATED INDEPENDENTLY (10-76)............................................................127 WHEN PUMP FLOW MERGED, BOOM RAISE OPERATED INDEPENDENTLY (10-79).............................................................128 WHEN PUMP FLOW MERGED, ARM IN OPERATED INDEPENDENTLY (10-80).................................................................131 WHEN PUMP FLOW MERGED, ARM OUT OPERATED INDEPENDENTLY (10-83)................................................................132 WHEN PUMP DIVIDED, TRAVEL OPERATED INDEPENDENTLY (10-84).....................................................................135 WHEN PUMP FLOW MERGED, ARM IN + BOOM RAISE OPERATED SIMULTANEOUSLY (10-87)...................................................136 WHEN PUMP FLOW MERGED, SWING + BOOM RAISE OPERATED SIMULTANEOUSLY (10-88)....................................................139 WHEN PUMP FLOW DIVIDED, TRAVEL + BOOM RAISE OPERATED SIMULTANEOUSLY (10-91)..................................................140 WHEN PUMP FLOW DIVIDED, TRAVEL + ARM IN OPERATED SIMULTANEOUSLY (10-92)......................................................143 SWING MOTOR..........................................................................................................................144 KMF160ABE-3......................................................................................................................144 SUCTION-SAFETY VALVE.............................................................................................................146 SWING BRAKE......................................................................................................................147 CENTER SWIVEL JOINT..............................................................................................................148 TRAVEL MOTOR.........................................................................................................................149 OPERATION OF MOTOR...............................................................................................................151 AT LOW SPEED.................................................................................................................151 AT HIGH SPEED................................................................................................................152 OPERATION OF PARKING BRAKE...................................................................................................153 COUNTERBALANCE VALVE, CHECK VALVE............................................................................................154 SAFETY VALVE.................................................................................................................155 VALVE CONTROL........................................................................................................................158 WORK EQUIPMENT PPC VALVE.............................................................................................................159 OPERATION........................................................................................................................161 TRAVEL PPC VALVE.....................................................................................................................163 OPERATION........................................................................................................................165 SERVICE PPC VALVE....................................................................................................................167 PPC SAFETY LOCK VALVE................................................................................................................169 PPC ACCUMULATOR......................................................................................................................170 PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE.............................................................................................171 PPC SHUTTLE VALVE................................................................................................................172 TRAVEL JUNCTION VALVE............................................................................................................175 STRAIGHT-TRAVEL SYSTEM...........................................................................................................176 LS-EPC VALVE.........................................................................................................................178 FUNCTION.........................................................................................................................179 OPERATION........................................................................................................................179 SOLENOID VALVE.......................................................................................................................181 WHEN SOLENOID IS DEACTIVATED.....................................................................................................182 WHEN SOLENOID IS EXCITED.........................................................................................................182 BOOM HOLDING VALVE...................................................................................................................183 OPERATION........................................................................................................................184 BOOM LEVER AT HOLD...........................................................................................................184 AT BOOM LOWER................................................................................................................185 WORK EQUIPMENT.......................................................................................................................186 AIR CONDITIONER......................................................................................................................187 AIR CONDITIONER PIPING...........................................................................................................187 ACTUAL ELECTRICAL WIRING DIAGRAM.....................................................................................................188 ENGINE CONTROL.......................................................................................................................194 OPERATION OF SYSTEM..............................................................................................................195 COMPONENTS OF SYSTEM.............................................................................................................196 ELECTRONIC CONTROL SYSTEM............................................................................................................200 CONTROL FUNCTION.................................................................................................................200 PUMP AND ENGINE MUTUAL CONTROL SYSTEM............................................................................................202 CONTROL METHOD IN EACH MODE..................................................................................................203 PUMP AND VALVE CONTROL FUNCTION..................................................................................................205 FUNCTION.....................................................................................................................205 LS CONTROL FUNCTION..........................................................................................................205 CUT-OFF FUNCTION.............................................................................................................206 CUT-OFF CANCEL FUNCTION......................................................................................................206 FINE CONTROL MODE FUNCTION...................................................................................................207 POWER MAX. FUNCTION, SWIFT SLOW-DOWN FUNCTION....................................................................................208 FUNCTION.....................................................................................................................208 POWER MAX. FUNCTION..........................................................................................................208 SWIFT SLOW-DOWN FUNCTION.....................................................................................................208 AUTO DECELERATION SYSTEM.........................................................................................................209 FUNCTION.....................................................................................................................209 OPERATION....................................................................................................................210 AUTOMATIC WARMING-UP AND ENGINE OVERHEAT PREVENTION FUNCTION.................................................................211 FUNCTION.....................................................................................................................211 ENGINE AUTOMATIC WARMING-UP FUNCTION.........................................................................................212 ENGINE OVERHEAT PREVENTION FUNCTION..........................................................................................212 SWING CONTROL SYSTEM.............................................................................................................213 FUNCTION.....................................................................................................................213 SWING LOCK, SWING HOLDING BRAKE FUNCTION.....................................................................................214 HYDRAULIC OIL QUICK WARM-UP FUNCTION WHEN SWING LOCK SWITCH IS ON............................................................214 TRAVEL CONTROL SYSTEM............................................................................................................215 FUNCTION.....................................................................................................................215 PUMP CONTROL FUNCTION WHEN TRAVELING.........................................................................................216 TRAVEL SPEED SELECTION FUNCTION..............................................................................................216 ACTIVE MODE FUNCTION.............................................................................................................217 FUNCTION.....................................................................................................................217 INCREASE IN ENGINE SPEED.....................................................................................................218 2-STAGE BOOM LOWERING SPEED..................................................................................................218 2-STAGE STROKE FOR SWING SPOOL...............................................................................................218 COMPONENTS OF SYSTEM.............................................................................................................219 ENGINE SPEED SENSOR..........................................................................................................219 PPC HYDRAULIC SWITCH.........................................................................................................219 PUMP PRESSURE SENSOR.........................................................................................................220 TVC PROLIX RESISTOR..........................................................................................................221 MACHINE MONITOR SYSTEM...............................................................................................................222 MONITOR PANEL....................................................................................................................223 OUTLINE......................................................................................................................223 INPUT AND OUTPUT SIGNALS.....................................................................................................223 MONITOR DISPLAY..................................................................................................................224 CONTENT OF DISPLAY...........................................................................................................225 OIL MAINTENANCE FUNCTION.........................................................................................................226 ELAPSED TIME RESET...........................................................................................................227 DEMO MODE....................................................................................................................227 MODE SELECTION SWITCHES..........................................................................................................228 SWITCH ACTUATION TABLE.......................................................................................................228 SENSORS......................................................................................................................229 ENGINE OIL LEVEL SENSOR..........................................................................................................230 HYDRAULIC OIL LEVEL SENSOR.......................................................................................................230 ENGINE OIL PRESSURE SENSOR (BOTH LO AND HI)......................................................................................230 COOLANT TEMPERATURE SENSOR.......................................................................................................230 FUEL LEVEL SENSOR................................................................................................................231 AIR CLEANER CLOGGING SENSOR......................................................................................................231 20 TESTING, ADJUSTING AND TROUBLESHOOTING................................................................................................233 STANDARD VALUE TABLE.................................................................................................................234 FOR ENGINE.......................................................................................................................234 FOR CHASSIS RELATED PARTS........................................................................................................235 FOR ELECTRICAL PARTS.............................................................................................................240 SERVICE TOOLS TABLE..................................................................................................................245 MEASURING ENGINE SPEED...............................................................................................................246 MEASURING EXHAUST COLOR..............................................................................................................247 MEASURING WITH HANDY SMOKE CHECKER H1............................................................................................247 MEASURING WITH SMOKE METER H2....................................................................................................247 VALVE CLEARANCE......................................................................................................................248 COMPRESSION PRESSURE.................................................................................................................249 BLOW BY PRESSURE.....................................................................................................................250 FUEL INJECTION TIMING................................................................................................................251 ADJUSTING........................................................................................................................252 ENGINE OIL PRESSURE..................................................................................................................253 FAN BELT TENSION.....................................................................................................................254 A/C COMPRESSOR BELT..................................................................................................................255 ENGINE SPEED SENSOR..................................................................................................................256 BOOST PRESSURE.......................................................................................................................257 GOVERNOR MOTOR LEVER STROKE..........................................................................................................258 WORK, SWING, AND TRAVEL CIRCUIT......................................................................................................259 TVC VALVE OUTPUT PRESSURE............................................................................................................262 LS VALVE OUTPUT AND DIFFERENTIAL PRESSURE............................................................................................264 CONTROL CIRCUIT OIL PRESSURE.........................................................................................................267 SOLENOID VALVE OUTPUT PRESSURE.......................................................................................................268 PPC VALVE OUTPUT PRESSURE AND SHUTTLE VALVE..........................................................................................271 WORK EQUIPMENT, SWING PPC VALVE......................................................................................................273 TRAVEL DEVIATION.....................................................................................................................274 LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT..................................................................................275 MEASURING OIL LEAKAGE................................................................................................................277 RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT....................................................................................280 TESTING CLEARANCE OF SWING CIRCLE BEARING............................................................................................281 WEAR OF SPROCKET.....................................................................................................................282 TRACK SHOE TENSION...................................................................................................................283 BLEEDING AIR.....................................................................................................................284 TROUBLESHOOTING GENERAL..............................................................................................................287 POINTS TO REMEMBER WHEN TROUBLESHOOTING..........................................................................................289 SEQUENCE OF EVENTS IN TROUBLESHOOTING............................................................................................291 PRECAUTIONS WHEN CARRYING OUT MAINTENANCE........................................................................................292 PRECAUTIONS WHEN HANDLING ELECTRIC EQUIPMENT.................................................................................292 HANDLING CONTROL BOX.........................................................................................................297 POINTS TO REMEMBER WHEN HANDLING HYDRAULIC EQUIPMENT.........................................................................298 CHECKS BEFORE TROUBLESHOOTING....................................................................................................300 JUDGEMENT OF POWER TRAIN.........................................................................................................301 PRECAUTIONS WHEN TROUBLESHOOTING.................................................................................................302 SAFETY.......................................................................................................................302 METHODS FOR TROUBLESHOOTING..................................................................................................302 PRECAUTIONS WHEN REMOVING, INSTALLING, DISASSEMBLING OR ASSEMBLING PARTS DURING TROUBLESHOOTING..............................304 PREVENTING RECURRENCE OF TROUBLE.................................................................................................305 HYDRAULIC EQUIPMENT..........................................................................................................305 OIL CHECKS...............................................................................................................305 CLEANING FRAGMENTS OF DAMAGED PARTS......................................................................................305 METHOD OF USING TROUBLESHOOTING CHARTS...........................................................................................306 CATEGORY OF TROUBLESHOOTING CODE NUMBER......................................................................................306 METHOD OF USING TROUBLESHOOTING TABLE FOR EACH TROUBLESHOOTING MODE..........................................................306 METHOD OF USING MATRIX TROUBLESHOOTING TABLES....................................................................................308 METHOD OF USING ENGINE RELATED CHARTS............................................................................................310 TROUBLESHOOTING......................................................................................................................315 CONNECTOR TYPES AND MOUNTING LOCATIONS...........................................................................................316 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS.......................................................................................319 CONTROL MECHANISM FOR ELECTRICAL SYSTEM..........................................................................................329 MACHINE CONTROL FUNCTIONS....................................................................................................329 MONITORING PANEL.................................................................................................................330 DISPLAY ON MACHINE MONITOR...................................................................................................330 RECORDING OF SERVICE CODES AND USER CODE DISPLAY FUNCTION....................................................................330 MACHINE DATA MONITORING FUNCTION.............................................................................................332 METHOD OF DISPLAYING MONITORING CODE.....................................................................................332 TABLE OF MACHINE MONITORING CODES........................................................................................333 BIT PATTERN CHART........................................................................................................334 GOVERNOR MOTOR ADJUSTMENT MODE...........................................................................................336 TIME ADJUSTMENT MODE.....................................................................................................336 WORKING MODE DEFAULT SETTING MODE........................................................................................337 METHOD OF USING JUDGEMENT TABLE..................................................................................................338 WHEN USING JUDGEMENT TABLE FOR GOVERNOR, PUMP CONTROLLER [GOVERNOR CONTROL SYSTEM] AND ENGINE REL............................338 WHEN USING JUDGEMENT TABLE FOR GOVERNOR, PUMP CONTROLLER [GOVERNOR CONTROL SYSTEM] AND HYDRAULIC ............................339 METHOD OF USING TROUBLESHOOTING CHARTS...........................................................................................340 CATEGORY OF TROUBLESHOOTING CODE NUMBER......................................................................................340 METHOD OF USING TROUBLESHOOTING TABLE FOR EACH TROUBLESHOOTING MODE..........................................................340 TROUBLESHOOTING CODE NUMBER AND PROBLEM..................................................................................340 DISTINGUISHING CONDITIONS................................................................................................340 METHOD OF FOLLOWING TROUBLESHOOTING CHART................................................................................340 GENERAL PRECAUTIONS......................................................................................................340 DETAILS OF TROUBLESHOOTING AND PROCEDURE.........................................................................................343 PROCEDURE FOR CHECKING MONITOR PANEL OUTPUT SIGNAL...........................................................................345 CHECKING INPUT SIGNAL OF GOVERNOR, PUMP CONTROLLER...........................................................................346 SERVICE CODE TABLE...............................................................................................................348 TROUBLSHOOTING OF COMMUNICATION ABNORMALITY SYSTEM (N-MODE)..........................................................................349 N-1 [E218] Communication abnormality.............................................................................................350 TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER, GOVERNOR CONTROL SYSTEM (E-MODE).......................................................353 POINTS TO REMEMBER WHEN CARRYING OUT TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER SYSTEM.........................................354 ACTIONS TAKEN....................................................................................................................355 JUDGEMENT TABLE..................................................................................................................357 ELECTRICAL CIRCUIT DIAGRAM FOR MODE SYSTEM.......................................................................................358 E-1 Abnormality in governor, pump controller power source, controller LED is OFF.................................................359 E-2 [E308] Abnormality in fuel control dial input value is displayed.............................................................360 E-3 [E317] Abnormality, disconnection in motor drive system is displayed.........................................................361 E-4 [E318] Abnormality, short circuit in motor drive system is displayed.........................................................362 E-5 [E306] Abnormality in feedback potentiometer system is displayed.............................................................363 E-6 [E315] Abnormality, short circuit in battery relay output system is displayed................................................364 E-7 [E316] Abnormality, step out in motor displayed..............................................................................365 E-8 Engine does not start........................................................................................................366 E-9 Engine does not start........................................................................................................369 E-10 Lack of output, engine high idle speed too low..............................................................................370 E-11 Engine does not stop........................................................................................................371 E-12 Faulty operation of battery relay system, engine does not stop..............................................................372 TROUBLESHOOTING OF ENGINE SYSTEM (S-MODE)............................................................................................375 METHOD OF USING ENGINE RELATED CHARTS............................................................................................376 S-1 Starting performance is poor (Starting always take time).....................................................................381 S-2 Engine does not start........................................................................................................382 S-3 Engine does not pick up smoothly (Follow-up is poor).........................................................................385 S-4 Engine stops during operation................................................................................................386 S-5 Engine does not run smoothly (Hunting).......................................................................................387 S-6 Engine lacks output (No power)...............................................................................................388 S-7 Exhaust gas is black (Incomplete Combustion)................................................................................389 S-8 Oil consumption is excessive (or exhaust gas is blue)........................................................................390 S-9 Oil becomes contaminated quickly.............................................................................................391 S-10 Fuel consumption is excessive...............................................................................................392 S-11 Oil in coolant, or coolant spurts back, or coolant level goes down..........................................................393 S-12 Oil pressure lamp lights up (Drop in oil pressure)..........................................................................394 S-13 Oil level rises.............................................................................................................395 S-14 Coolant Temperature becomes too high (Overheating)..........................................................................396 S-15 Abnormal noise is made......................................................................................................397 S-16 Vibration is excessive......................................................................................................398 TROUBLESHOOTING OF GOVERNOR PUMP CONTROLLER, PUMP CONTROL SYSTEM (C-MODE)............................................................399 POINTS TO REMEMBER WHEN TROUBLESHOOTING CONTROLLER SYSTEM........................................................................400 ACTIONS TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE......................................................401 JUDGEMENT TABLE FOR GOVERNOR, PUMP CONTROLLER (PUMP CONTROL SYSTEM) AND HYDRAULIC RELATED PARTS..................................405 ELECTRIC CIRCUIT DIAGRAM FOR C MODE..............................................................................................406 C-1 Abnormality in controller power source system, controller LED is OFF.........................................................408 C-2 [E232] Short circuit in front pump TVC solenoid system is displayed.........................................................409 C-3 [E233] Disconnection in front pump TVC solenoid system is displayed..........................................................410 C-4 [E236] Short circuit in rear pump TVC solenoid system is displayed...........................................................411 C-5 [E237] Disconnection in rear pump TVC solenoid system is displayed...........................................................412 C-6 [E207] Short circuit in LS select solenoid system is displayed...............................................................413 C-7 [E208] Disconnection in active mode, boom, solenoid system is displayed......................................................415 C-8 [E203] Short circuit in swing brake solenoid system is displayed.............................................................416 C-9 [E213] Disconnection in swing brake solenoid system is displayed.............................................................417 C-10 [E204] Short circuit in pump merge divider solenoid system is displayed.....................................................418 C-11 [E214] Disconnection in pump merge divider solenoid system is displayed.....................................................419 C-12 [E206] Short circuit in travel speed solenoid system is displayed...........................................................420 C-13 [E216] Disconnection in travel speed selector solenoid system is displayed..................................................421 C-14 [E217] Short circuit in active mode, swing, solenoid system is displayed....................................................422 C-15 [E235] Disconnection in active mode, swing, solenoid system is displayed....................................................423 C16 [E217] Model selection input error is displayed.............................................................................424 C-17 [E222] Short circuit in LS-EPC solenoid system is displayed.................................................................426 C-18 [E224] Disconnection in LS-EPC solenoid system is displayed.................................................................427 C-19 [E224] Abnormality in front pump pressure sensor system is displayed........................................................428 C-20 [E225] Abnormality in rear pump pressure sensor system is displayed.........................................................429 C-21 [E226] Abnormality in i pressure sensor power source system is displayed....................................................430 C-22 [E227] Abnormality in engine speed sensor system is displayed...............................................................431 C-23 [E225] Abnormality in machine push up solenoid system, no service code displayed............................................432 a) If solenoid is not actuated, turned on, when machine push up switch is set to low pressure setting........................432 b) If solenoid is not canceled, turned off, when machine push up switch is set to high pressure setting......................433 TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER, INPUT SIGNAL SYSTEM (F-MODE)...........................................................435 ELECTRIC CIRCUIT DIAGRAM FOR F MODE..............................................................................................437 F-1 Bit pattern 20-[1] Swing oil pressure switch does not light up...............................................................438 F-2 Bit pattern 20-[2] Travel oil pressure switch does not light up..............................................................439 F-3 Bit pattern 20-[3] Boom LOWER oil pressure switch does not light up..........................................................440 F-4 Bit pattern 20-[4] Boom RAISE oil pressure switch does not light up..........................................................441 F-5 Bit pattern 20-[5] Arm IN oil pressure switch does not light up..............................................................442 F-6 Bit pattern 20-[6] Arm OUT oil pressure switch does not light up.............................................................443 F-7 Bit pattern 21-[1] Bucket CURL oil pressure switch does not light up.........................................................444 F-8 Bit pattern 21-[2] Bucket DUMP oil pressure switch does not light up.........................................................445 F-9 Bit pattern 21-[3] Swing lock oil pressure switch does not light up..........................................................446 F-10 Bit pattern 22-[5] Mode connection does not light up........................................................................447 F-11 Bit pattern 22-[6] Left knob switch does not light up.......................................................................448 TROUBLESHOOTING OF MACHINE MECHANICAL MODE (H-MODE)..................................................................................449 PUMP MERGE DIVIDER LOGIC.........................................................................................................450 SOLENOID ACTUATION TABLE.........................................................................................................450 TABLE OF FAILURE MODES AND CAUSES................................................................................................451 H-1 Speeds of all work equipment swing, travel are slow or lack power............................................................453 H-2 There is excessive drop in engine speed, or engine stalls...................................................................454 H-3 No work equipment, travel, swing movement...................................................................................454 H-4 Abnormal noise generated around pump.........................................................................................455 H-5 Auto decel does not work when PPC shuttle valve is cause.....................................................................455 H-6 Fine control ability is poor or response is poor.............................................................................455 H-7 Boom is slow or lacks power..................................................................................................456 H-8 Arm is slow or lacks power...................................................................................................457 H-9 Bucket is slow or lacks power................................................................................................458 H-10 Work Equipment; Boom, Arm, Bucket, Does Not Move, But Travel and Swing Are Normal...........................................459 H-11 Excessive hydraulic drift, boom, arm, bucket ...............................................................................459 1) Excessive hydraulic drift of boom.........................................................................................459 2) Excessive hydraulic drift of arm or bucket................................................................................459 H-12 Excessive time lag, engine at low idling....................................................................................460 H-13 Other equipment moves when single circuit is relieved.......................................................................460 H-14 In L/O, F3/O modes, work equipment speed is faster than specified speed.....................................................461 H-15 Malfunction of machine push up function.....................................................................................461 H-16 In compound operations, work equipment with larger load is slow.............................................................461 H-17 In swing plus boom RAISE, boom RAISE is slow................................................................................462 H-18 In swing plus arm, arm is slow..............................................................................................462 H-19 In swing plus travel, travel speed drops excessively........................................................................462 H-20 Travel deviation............................................................................................................463 H-21 Travel speed is slow........................................................................................................465 H-22 Steering does not turn easily or lacks power................................................................................466 H-23 Travel speed does not switch or is faster than specified speed..............................................................467 H-24 Travel does not move, one side only.........................................................................................467 H-25 Does not swing..............................................................................................................468 H-26 Travel speed is slow........................................................................................................469 H-27 Excessive overrun when stopping swing.......................................................................................470 H-28 Excessive shock when stopping swing, one direction only.....................................................................471 H-29 Excessive abnormal noise when stopping swing................................................................................471 H-30 Excessive hydraulic drift of swing.........................................................................................472 H-31 Swing speed is faster than specified swing speed............................................................................472 TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M-MODE)...................................................................................473 ACTIONS TAKEN BY MONITOR PANEL...................................................................................................475 ELECTRIC CIRCUIT DIAGRAM FOR M MODE..............................................................................................476 M-1 [E101] Abnormality in error data is displayed................................................................................477 [E102] Error in clock data is displayed......................................................................................477 M-2 [E103] Short circuit in buzzer output or 24V wiring harness contact with buzzer harness is displayed.........................478 M-3 [E104] Air cleaner restriction detected is displayed.........................................................................479 M-4 [E106] Drop in engine oil Hi pressure detected is displayed..................................................................479 M-5 [E108] Engine coolant temperature 105 C detected is displayed................................................................479 M-6 When start switch is turned ON, no lamps on monitor panel light up for three seconds.........................................480 M-7 When start switch is turned ON, monitor panel lamps all stay illuminated and do not go out...................................482 M-8 When start switch is turned ON, items illuminated on monitor panel are different from actual machine.........................482 M-9 When start switch is turned ON, engine stopped, basic check items flash......................................................483 M-10 Preheating is not used, but on monitor panel lights up......................................................................486 M-11 When start switch is turned ON and engine is started, basic check items flash...............................................487 M-12 When start switch is turned ON, engine speed, caution items, emergency items flash. Battery, engine oil pressure lamps d....489 M-13 When start switch is turned ON and engine is started, caution items, emergency items flash, when there is no abnormality....491 M-14 When start switch is turned ON, engine stopped, buzzer does not sound for one second, Caution ite...........................494 M-15 No abnormality is displayed on monitor panel but buzzer sounds..............................................................495 M-16 Night light on monitor panel does not light up, liquid crystal display is normal............................................496 M-17 Coolant temperature gauge does not rise.....................................................................................497 M-18 Coolant temperature gauge does not give any display, no gauge lamps light up during operation...............................498 M-19 Fuel level gauge always displays FULL.......................................................................................499 M-20 Fuel level gauge does not give display......................................................................................500 M-21 Swing lock switch is turned ON, but on monitor panel does not light.........................................................501 M-22 Swing prolix switch is turned ON, but on monitor panel does not flash.......................................................502 M-23 Service meter does not advance while engine is running......................................................................503 M-24 When start switch is at OFF and time switch is pressed, time and service meter are not displayed............................503 M-25 Faulty fuel level sensor system.............................................................................................504 M-26 Faulty coolant temperature sensor system....................................................................................505 M-27 Faulty engine oil level sensor system.......................................................................................506 M-28 Faulty coolant level sensor system..........................................................................................507 M-29 Faulty hydraulic oil level sensor system....................................................................................508 M-30 [E112, E113] Wiper does not work or switch is not being used, but wiper is actuated.........................................509 M-31 [E114] Wiper does not work or switch is not being used, but washer motor is not actuated....................................513 30 DISASSEMBLY AND ASSEMBLY..............................................................................................................515 METHOD OF USING MANUAL...............................................................................................................516 SPECIAL TOOL LIST....................................................................................................................521 SKETCHES OF SPECIAL TOOLS............................................................................................................526 STARTING MOTOR.......................................................................................................................534 REMOVAL..........................................................................................................................534 INSTALLATION.....................................................................................................................534 ALTERNATOR...........................................................................................................................535 REMOVAL..........................................................................................................................535 INSTALLATION.....................................................................................................................535 ENGINE OIL COOLER....................................................................................................................536 REMOVAL..........................................................................................................................536 INSTALLATION.....................................................................................................................536 FUEL INJECTION PUMP..................................................................................................................537 REMOVAL..........................................................................................................................537 INSTALLATION.....................................................................................................................538 WATER PUMP...........................................................................................................................539 REMOVAL..........................................................................................................................539 INSTALLATION.....................................................................................................................539 NOZZLE HOLDER........................................................................................................................540 REMOVAL..........................................................................................................................540 INSTALLATION.....................................................................................................................540 TURBOCHARGER.........................................................................................................................541 REMOVAL..........................................................................................................................541 INSTALLATION.....................................................................................................................541 THERMOSTAT...........................................................................................................................542 REMOVAL..........................................................................................................................542 INSTALLATION.....................................................................................................................542 FRONT ENGINE SEAL....................................................................................................................543 REMOVAL..........................................................................................................................543 INSTALLATION.....................................................................................................................543 REAR ENGINE SEAL.....................................................................................................................544 REMOVAL..........................................................................................................................544 INSTALLATION.....................................................................................................................545 CYLINDER HEAD........................................................................................................................547 REMOVAL..........................................................................................................................547 INSTALLATION.....................................................................................................................551 GOVERNOR MOTOR.......................................................................................................................554 REMOVAL..........................................................................................................................554 INSTALLATION.....................................................................................................................554 AFTERCOOLER CORE.....................................................................................................................555 REMOVAL..........................................................................................................................555 INSTALLATION.....................................................................................................................555 OIL COOLER...........................................................................................................................556 REMOVAL..........................................................................................................................556 INSTALLATION.....................................................................................................................557 RADIATOR, OIL COOLER.................................................................................................................558 REMOVAL..........................................................................................................................558 INSTALLATION.....................................................................................................................560 ENGINE, MAIN PUMP....................................................................................................................561 REMOVAL..........................................................................................................................561 INSTALLATION.....................................................................................................................565 DAMPER...............................................................................................................................567 REMOVAL..........................................................................................................................567 INSTALLATION.....................................................................................................................567 FUEL TANK............................................................................................................................568 REMOVAL..........................................................................................................................568 INSTALLATION.....................................................................................................................568 CENTER SWIVEL JOINT..................................................................................................................569 REMOVAL..........................................................................................................................569 INSTALLATION.....................................................................................................................569 DISASSEMBLY......................................................................................................................570 ASSEMBLY.........................................................................................................................570 FINAL DRIVE..........................................................................................................................571 REMOVAL..........................................................................................................................571 INSTALLATION.....................................................................................................................571 DISASSEMBLY......................................................................................................................572 ASSEMBLY.........................................................................................................................576 TRAVEL MOTOR.........................................................................................................................582 DISASSEMBLY......................................................................................................................582 ASSEMBLY.........................................................................................................................586 SPROCKET.............................................................................................................................595 REMOVAL..........................................................................................................................595 INSTALLATION.....................................................................................................................595 SWING MOTOR..........................................................................................................................596 REMOVAL..........................................................................................................................596 INSTALLATION.....................................................................................................................596 DISASSEMBLY......................................................................................................................597 ASSEMBLY.........................................................................................................................599 SWING MACHINERY......................................................................................................................606 REMOVAL..........................................................................................................................606 INSTALLATION.....................................................................................................................606 DISASSEMBLY......................................................................................................................607 ASSEMBLY.........................................................................................................................610 REVOLVING FRAME......................................................................................................................615 REMOVAL..........................................................................................................................615 INSTALLATION.....................................................................................................................616 SWING CIRCLE.........................................................................................................................617 REMOVAL..........................................................................................................................617 INSTALLATION.....................................................................................................................617 IDLER AND RECOIL SPRING..............................................................................................................618 REMOVAL..........................................................................................................................618 INSTALLATION.....................................................................................................................618 IDLER................................................................................................................................619 DISASSEMBLY......................................................................................................................619 ASSEMBLY.........................................................................................................................620 RECOIL SPRING........................................................................................................................623 DISASSEMBLY......................................................................................................................623 ASSEMBLY.........................................................................................................................624 TRACK ROLLER.........................................................................................................................625 REMOVAL..........................................................................................................................625 INSTALLATION.....................................................................................................................625 DISASSEMBLY......................................................................................................................626 ASSEMBLY.........................................................................................................................627 CARRIER ROLLER.......................................................................................................................630 REMOVAL..........................................................................................................................630 INSTALLATION.....................................................................................................................630 DISASSEMBLY......................................................................................................................631 ASSEMBLY.........................................................................................................................632 TRACK CHAIN..........................................................................................................................635 REMOVAL..........................................................................................................................635 INSTALLATION.....................................................................................................................635 HYDRAULIC TANK.......................................................................................................................636 REMOVAL..........................................................................................................................636 INSTALLATION.....................................................................................................................637 MAIN PUMP............................................................................................................................638 REMOVAL..........................................................................................................................638 INSTALLATION.....................................................................................................................639 DISASSEMBLY......................................................................................................................640 PUMP ASSEMBLY................................................................................................................640 FRONT PUMP...................................................................................................................640 REAR PUMP....................................................................................................................645 ASSEMBLY.........................................................................................................................648 FRONT PUMP...................................................................................................................648 REAR PUMP....................................................................................................................655 MAIN PUMP OIL SEAL...................................................................................................................666 REMOVAL..........................................................................................................................666 INSTALLATION.....................................................................................................................666 CONTROL VALVE........................................................................................................................667 REMOVAL..........................................................................................................................667 INSTALLATION.....................................................................................................................669 DISASSEMBLY......................................................................................................................670 (1/3)........................................................................................................................670 (2/3)........................................................................................................................671 (3/3)........................................................................................................................672 ASSEMBLY.........................................................................................................................675 (1/3)........................................................................................................................675 (2/3)........................................................................................................................676 (3/3)........................................................................................................................677 PUMP MERGE DIVIDER VALVE.............................................................................................................681 DISASSEMBLY......................................................................................................................681 ASSEMBLY.........................................................................................................................681 PRESSURE COMPENSATION VALVE..........................................................................................................682 DISASSEMBLY......................................................................................................................682 ASSEMBLY.........................................................................................................................682 FRONT PUMP SERVO VALVE...............................................................................................................683 REMOVAL..........................................................................................................................683 INSTALLATION.....................................................................................................................683 REAR PUMP SERVO VALVE................................................................................................................684 REMOVAL..........................................................................................................................684 INSTALLATION.....................................................................................................................684 LS-EPC SOLENOID VALVE................................................................................................................685 REMOVAL..........................................................................................................................685 INSTALLATION.....................................................................................................................685 SOLENOID VALVE.......................................................................................................................686 REMOVAL..........................................................................................................................686 INSTALLATION.....................................................................................................................686 WORK EQUIPMENT PPC VALVE.............................................................................................................687 REMOVAL..........................................................................................................................687 INSTALLATION.....................................................................................................................687 DISASSEMBLY......................................................................................................................688 ASSEMBLY.........................................................................................................................688 TRAVEL PPC VALVE.....................................................................................................................689 REMOVAL..........................................................................................................................689 INSTALLATION.....................................................................................................................689 DISASSEMBLY......................................................................................................................690 ASSEMBLY.........................................................................................................................690 PPC SHUTTLE VALVE....................................................................................................................691 REMOVAL..........................................................................................................................691 INSTALLATION.....................................................................................................................692 DISASSEMBLY......................................................................................................................692 ASSEMBLY.........................................................................................................................693 BOOM LOCK VALVE......................................................................................................................694 REMOVAL..........................................................................................................................694 INSTALLATION.....................................................................................................................694 DISASSEMBLY......................................................................................................................695 ASSEMBLY.........................................................................................................................695 BOOM CYLINDER........................................................................................................................696 REMOVAL..........................................................................................................................696 INSTALLATION.....................................................................................................................696 ARM CYLINDER.........................................................................................................................698 REMOVAL..........................................................................................................................698 INSTALLATION.....................................................................................................................698 BUCKET CYLINDER......................................................................................................................699 REMOVAL..........................................................................................................................699 INSTALLATION.....................................................................................................................699 HYDRAULIC CYLINDER...................................................................................................................701 THREADED STYLE PISTON................................................................................................................701 DISASSEMBLY......................................................................................................................701 ASSEMBLY.........................................................................................................................703 WORK EQUIPMENT.......................................................................................................................707 REMOVAL..........................................................................................................................707 INSTALLATION.....................................................................................................................708 BUCKET...............................................................................................................................709 REMOVAL..........................................................................................................................709 INSTALLATION.....................................................................................................................710 ARM..................................................................................................................................711 REMOVAL..........................................................................................................................711 INSTALLATION.....................................................................................................................712 BUCKET AND ARM.......................................................................................................................713 REMOVAL..........................................................................................................................713 INSTALLATION.....................................................................................................................714 BOOM.................................................................................................................................715 REMOVAL..........................................................................................................................715 INSTALLATION.....................................................................................................................716 OPERATOR’S CAB.......................................................................................................................717 REMOVAL..........................................................................................................................717 INSTALLATION.....................................................................................................................718 COUNTERWEIGHT........................................................................................................................719 REMOVAL..........................................................................................................................719 INSTALLATION.....................................................................................................................719 COMPRESSOR...........................................................................................................................720 REMOVAL..........................................................................................................................720 INSTALLATION.....................................................................................................................720 CONDENSER............................................................................................................................721 REMOVAL..........................................................................................................................721 INSTALLATION.....................................................................................................................721 RECEIVER TANK........................................................................................................................722 REMOVAL..........................................................................................................................722 INSTALLATION.....................................................................................................................722 AIR CONDITIONER UNIT.................................................................................................................723 REMOVAL..........................................................................................................................723 INSTALLATION.....................................................................................................................724 GOVERNOR, PUMP CONTROLLER............................................................................................................725 REMOVAL..........................................................................................................................725 INSTALLATION.....................................................................................................................725 MONITOR PANEL........................................................................................................................726 REMOVAL..........................................................................................................................726 INSTALLATION.....................................................................................................................726 CONTROL STAND CASE...................................................................................................................727 REMOVAL..........................................................................................................................727 TRAY.........................................................................................................................727 BOOT.........................................................................................................................727 UPPER CASE...................................................................................................................728 INSTALLATION.....................................................................................................................728 40 MAINTENANCE STANDARD..................................................................................................................729 ENGINE MOUNT.........................................................................................................................730 RADIATOR AND OIL COOLER MOUNT........................................................................................................731 SWING MACHINERY......................................................................................................................735 SWING CIRCLE.........................................................................................................................736 FINAL DRIVE..........................................................................................................................737 TRACK FRAME AND RECOIL SPRING........................................................................................................738 IDLER................................................................................................................................742 CARRIER ROLLER.......................................................................................................................744 TRACK ROLLER.........................................................................................................................745 TRACK SHOE...........................................................................................................................746 TRACK SHOE...........................................................................................................................748 HYDRAULIC PUMP.......................................................................................................................749 CONTROL VALVE........................................................................................................................750 SELF REDUCING PRESSURE VALVE.........................................................................................................757 SUCTION SAFETY VALVE.................................................................................................................758 SWING MOTOR..........................................................................................................................759 TRAVEL MOTOR.........................................................................................................................760 WORK EQUIPMENT • SWING PPC VALVE.....................................................................................................761 TRAVEL PPC VALVE.....................................................................................................................762 SERVICE PPC VALVE....................................................................................................................763 PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE.............................................................................................764 LS-EPC VALVE.........................................................................................................................765 SOLENOID VALVE.......................................................................................................................766 CENTER SWIVEL JOINT..................................................................................................................767 BOOM HOLDING VALVE...................................................................................................................768 HYDRAULIC CYLINDER...................................................................................................................770 BOOM, BUCKET CYLINDER - THREADED PISTON..........................................................................................770 ARM CYLINDER - THREADED PISTON...................................................................................................770 WORK EQUIPMENT.......................................................................................................................772 DIMENSIONS OF WORK EQUIPMENT.........................................................................................................774 BUCKET...........................................................................................................................776 90 OTHERS................................................................................................................................779 Foldout 20-203 Connector types and mounting location.................................................................................781 Foldout 20-229 Details of troubleshooting and troubleshooting procedures.............................................................783 Foldout 20-353 Actions taken by controller when abnormality occurs and problems on machine...........................................785 Foldout 20-354 Action taken by controller when abnormality occurs and problems on machine............................................787 Foldout 20-355 Judgement table for governor pump controller and engine related parts.................................................789 Foldout 20-356 Electrical circuit diagram for E mode.................................................................................791 Foldout 20-365 E-8 Engine does not start.............................................................................................793 Foldout 20-366 E-9a Engine speed is irregular........................................................................................795 Foldout 20-367 E-9b There is hunting.................................................................................................797 Foldout 20-368 E-10 Lack of output, engine high idle speed is low....................................................................799 Foldout 20-369 E-11 Engine does not stop.............................................................................................801 Foldout 20-453 Actions taken by controller when abnormality occurs and problems on machine...........................................803 Foldout 20-454 Actions taken by controller when abnormality occurs and problemss....................................................805 Foldout 20-455 Actions taken by controller when abnormality occurs and problems on machine...........................................807 Foldout 20-456 Actions taken by controller when abnromality occurs and problems on machine...........................................809 Foldout 20-457 Judgement table for governor, pump controller (pump control system) and hydraulic related parts.......................811 Foldout 20-458 Electric circuit diagram for C mode...................................................................................813 Foldout 20-461 C-2 [E232] Short circuit in front pump TVC solenoid is displayed......................................................815 Foldout 20-462 C-3 [E233] Disconnection in front pump TVC solenoid system is displayed...............................................817 Foldout 20-463 C-4 [E236] Short circuit in rear pump TVC solenoid system is displayed................................................819 Foldout 20-464 C-5 [E237] Disconnection in rar pump TVC solenid system is displayed..................................................821 Foldout 20-467 C-7 [E208] Disconnection in active mode, boom, solenoid system is displayed...........................................823 Foldout 20-468 C-8 [E203] Short circuit in swing brake solenoid system is displayed..................................................825 Foldout 20-469 C-9 [E213] Disconnection in swing brake solenoid system is displayed..................................................827 Foldout 20-471 C-11 [E214] Disconnection in pump merge divider solenoid system is displayed..........................................829 Foldout 20-473 C-13 [E216] Disconnection in travel speed selector solenoid system is displayed.......................................831 Foldout 20-475 C-15 [E235] Disconnection in active mode, swlin solenoid system is displayed..........................................833 Foldout 20-503 Electric circuit diagram for F mode...................................................................................835 Foldout 20-553 Table of failure modes and causes (1/2)...............................................................................837 Foldout 20-554 Table of fialure modes and causes (2/2)...............................................................................839 Foldout 20-555 H-1 Speed of all work equipment, swing, travel are slow or lack power.................................................841 Foldout 20-557 H-4 Abnormal noise generated around pump..............................................................................843 Foldout 20-557 H-5 Auto decel does not work when PPC shuttle valve is cause..........................................................843 Foldout 20-557 H-6 Fine control ability is poor or response is poor..................................................................843 Foldout 20-558 H-7 Boom is slow or lacks power.......................................................................................845 Foldout 20-559 H-8 Arm is slow or lacks power........................................................................................847 Foldout 20-560 H-9 Bucket is slow or lacks power.....................................................................................849 Foldout 20-567 H-21 Travel speed is slow.............................................................................................851 Foldout 20-568 H-22 Steering does not turn easily or lacks power.....................................................................853 Foldout 20-571 H-26 Travel speed is slow.............................................................................................855 Foldout 20-603 Actions taken by controller when abnormality occurs and problems on machine...........................................857 Foldout 20-604 Electric circuit diagram for M mode...................................................................................859 Foldout 20-637 M-30 Wiper does not work or switch is not being used, but wiper is actuated [include E112, E113].....................861 Foldout 20-638 M-30 (continued)......................................................................................................863 Foldout 20-641 M-31 Wiper does not work or switch is not being used, but washer motor is actuated (include E114).....................865
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