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Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual 52001 and up – PDF DOWNLOAD
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Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual
Book Code: SEBM035603
MACHINE MODEL SERIAL NUMBER
WA800L-3 52001 and up
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Description
Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual
FILE DETAILS:
Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual
Brands: Komatsu
Equipment Type: Wheel Loader
Manuals Type: Shop Manual
Machine Model: WA800L-3 Avance Loader
Serial Number: 52001 and up
Book Code: SEBM035603
Language: English
Pages: 803
File Format: Portable Document Format (PDF)
DESCRIPTION:
Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual
FOREWORD:
GENERAL:
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 chapters; these chapters are further divided into the each main group of components.
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.In addition, this section may contain hydraulic circuit diagrams, electric circuit diagrams, and maintenance standards.
TESTING AND ADJUSTING:
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” with Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY:
This section explains the procedures for removing, installing, disassembling and assembling each component, as well as precautions for them.
MAINTENANCE STANDARD:
This section gives the judgment standards for inspection of disassembled parts. The contents of this section may be described in STRUCTURE AND FUNCTION.
OTHERS:
This section mainly gives hydraulic circuit diagrams and electric circuit diagrams. In addition, this section may give the specifications of attachments and options together.
TABLE OF CONTENTS:
Komatsu WA800L-3 Avance Loader Wheel Loader Shop Manual
COVER.......................................................................................................................................................................................... 1 CONTENTS....................................................................................................................................................................................... 2 01 GENERAL..................................................................................................................................................................................... 28 GENERAL ASSEMBLY DRAWING................................................................................................................................................................... 29 SPECIFICATIONS............................................................................................................................................................................. 30 WEIGHT TABLE............................................................................................................................................................................... 33 LIST OF LUBRICANT AND WATER................................................................................................................................................................ 35 10 STRUCTURE AND FUNCTION...................................................................................................................................................................... 43 POWER TRAIN................................................................................................................................................................................ 44 POWER TRAIN SYSTEM......................................................................................................................................................................... 45 ENGINE CONTROL............................................................................................................................................................................. 46 RADIATOR AND COOLER........................................................................................................................................................................ 47 DAMPER..................................................................................................................................................................................... 49 TORQUE CONVERTER AND TRNSMISSION PIPING.................................................................................................................................................... 50 TRANSMISSION HYDRAULIC SYSTEM DIAGRAM...................................................................................................................................................... 51 TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM..................................................................................................................................................... 52 TORQUE CONVERTER........................................................................................................................................................................... 53 TRANSMISSION............................................................................................................................................................................... 58 TRANSFER................................................................................................................................................................................... 66 TRANSMISSION CONTROL VALVE................................................................................................................................................................. 67 TORQUE CONVERTER OIL COOLER................................................................................................................................................................ 83 DRIVE SHAFT................................................................................................................................................................................ 84 CENTER SUPPORT............................................................................................................................................................................. 85 AXLE....................................................................................................................................................................................... 86 DIFFERENTIAL............................................................................................................................................................................... 88 FINAL DRIVE................................................................................................................................................................................ 91 CENTER HINGE PIN........................................................................................................................................................................... 92 AXLE MOUNT................................................................................................................................................................................. 93 TIRE AND WHEEL............................................................................................................................................................................. 95 STEERING PIPING............................................................................................................................................................................ 96 JOYSTICK STEERING LINKAGE.................................................................................................................................................................. 97 STEERING PUMP.............................................................................................................................................................................. 98 SWITCH PUMP................................................................................................................................................................................100 STEERING DEMAND VALVE......................................................................................................................................................................102 EPC VALVE..................................................................................................................................................................................113 ROTARY VALVE...............................................................................................................................................................................114 TWO-WAY RESTRICTOR VALVE...................................................................................................................................................................116 DIVERTER VALVE.............................................................................................................................................................................117 BRAKE PIPING...............................................................................................................................................................................121 BRAKE CIRCUIT DIAGRAM......................................................................................................................................................................122 BRAKE VALVE................................................................................................................................................................................124 CHARGE VALVE...............................................................................................................................................................................129 ACCUMULATOR (FOR BRAKE)....................................................................................................................................................................133 SLACK ADJUSTER.............................................................................................................................................................................134 BRAKE......................................................................................................................................................................................137 PARKING BRAKE..............................................................................................................................................................................138 SPRING CYLINDER............................................................................................................................................................................140 PARKING BRAKE SOLENOID VALVE...............................................................................................................................................................141 HYDRAULIC PIPING...........................................................................................................................................................................142 WORK EQUIPMENT LEVER LINKAGE...............................................................................................................................................................145 HYDRAULIC TANK.............................................................................................................................................................................146 MAIN PISTON PUMP...........................................................................................................................................................................149 ES VALVE (ENGINE SENSING VALVE)............................................................................................................................................................157 SERVO VALVE................................................................................................................................................................................159 PPC VALVE (PROPORTIONAL PRESSURE VALVE)....................................................................................................................................................162 PPC RELIEF VALVE...........................................................................................................................................................................166 ACCUMULATOR (FOR PPC VALVE)................................................................................................................................................................167 MAIN CONTROL VALVE.........................................................................................................................................................................168 LUBRICATION OF WORK EQUIPMENT..............................................................................................................................................................181 WORK EQUIPMENT LINKAGE.....................................................................................................................................................................184 BUCKET POSITIONER AND BOOM KICK-OUT........................................................................................................................................................186 OPERATION OF PROXIMITY SWITCH..............................................................................................................................................................188 CAB AND ROPS CANOPY........................................................................................................................................................................192 AIR CONDITIONER............................................................................................................................................................................193 MACHINE MONITOR SYSTEM.....................................................................................................................................................................197 MAIN MONITOR...............................................................................................................................................................................198 MAINTENANCE MONITOR........................................................................................................................................................................202 ENGINE STARTING CIRCUIT....................................................................................................................................................................205 ENGINE STOP CIRCUIT........................................................................................................................................................................208 PREHEATING CIRCUIT.........................................................................................................................................................................209 ELECTRICAL TRANSMISSION CONTROL............................................................................................................................................................210 KICK-DOWN, HOLD SWITCH.....................................................................................................................................................................211 AUTOMATIC TRANSMISSION (ATM) SYTEM.........................................................................................................................................................212 AJSS (ADVANCED JOYSTICK STEERING SYSTEM)...................................................................................................................................................222 ELECTRIC PARKING BRAKE CONTROL.............................................................................................................................................................227 20 TESTING AND ADJUSTING.......................................................................................................................................................................236 STANDARD VALUE TABLE FOR ENGINE............................................................................................................................................................237 STANDARD VALUE TABLE FOR CHASSIS...........................................................................................................................................................238 STANDARD VALUE TABLE FOR ELECTRICAL PARTS..................................................................................................................................................242 TESTING AND ADJUSTING......................................................................................................................................................................252 TABLE OF TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING..............................................................................................................................253 MEASURING ENGINE SPEED.................................................................................................................................................................255 MEASURING EXHAUST GAS COLOR............................................................................................................................................................256 ADJUSTING VALVE CLEARANCE..............................................................................................................................................................257 MEASURING COMPRESSION PRESSURE.........................................................................................................................................................257 MEASURING BLOW-BY PRESSURE.............................................................................................................................................................257 TESTING AND ADJUSTING FUEL INJECTION TIMING............................................................................................................................................257 MEASURING ENGINE OIL PRESSURE..........................................................................................................................................................257 MEASURING EXHAUST TEMPERATURE..........................................................................................................................................................257 MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE).........................................................................................................................................257 TESTING AND ADJUSTING ALTERNATOR BELT TENSION..........................................................................................................................................258 TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR......................................................................................................................259 MEASURING ACCELERATOR PEDAL ...........................................................................................................................................................260 TESTING AND ADJUSTING TORQUE CONVERTER AND TRANSMISSION OIL PRESSURE...................................................................................................................261 PROCEDURE FOR OPERATING EMERGENCY STEERING SPOOL WHEN TRANSMISSION VALVE FAILS.........................................................................................................263 TESTING AND ADJUSTING STEERING OIL PRESSURE ...........................................................................................................................................265 TESTING AND ADJUSTING EMERGENCY STEERING OIL PRESSURE .................................................................................................................................266 BLEEDING AIR FROM STEERING CIRCUIT.....................................................................................................................................................268 TESTING AND ADJUSTING STEERING STOPPER BOLT............................................................................................................................................269 TESTING AND ADJUSTING STEERING LEVER ANGLE SENSOR AND FRAME ANGLE SENSOR...............................................................................................................270 TESTING WHEEL BRAKE PERFORMANCE........................................................................................................................................................271 TESTING WHEEL BRAKE OIL PRESSURE DROP..................................................................................................................................................272 MEASURING WEAR OF WHEEL BRAKE DISC.....................................................................................................................................................274 TESTING AND ADJUSTING ACCUMULATOR CHARGE CUT-IN AND CUT-OUT PRESSURE...................................................................................................................275 BLEEDING AIR FROM WHEEL BRAKE CIRCUIT..................................................................................................................................................277 TESTING PARKING BRAKE PERFORMANCE......................................................................................................................................................278 MEASURING PARKING RAKE SOLENOID OUTPUT PRESSURE........................................................................................................................................279 CHECKING AND ADJUSTING PARKING BRAKE PAD...............................................................................................................................................280 TESTING AND ADJUSTING PPC PRESSURE.....................................................................................................................................................282 ADJUSTING PPC VALVE LINKAGE............................................................................................................................................................283 TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE................................................................................................................................284 BLEEDING AIR FROM PISTON PUMP..........................................................................................................................................................286 BLEEDING AIR FROM WORK EQUIPMENT CIRCUIT...............................................................................................................................................287 ADJUSTING WORK EQUIPMENT LEVER LINKAGE.................................................................................................................................................288 RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT......................................................................................................................................289 TESTING AND ADJUSTING BUCKET PROXIMITY SWITCH..........................................................................................................................................290 TESTING AND ADJUSTING BOOM PROXIMITY SWITCH............................................................................................................................................290 TESTING PROXIMITY ACTUATION PILOT LAMP.................................................................................................................................................291 ADJUSTING SPEEDOMETER MODULE OF MAIN MONITOR...........................................................................................................................................292 TROUBLESHOOTING............................................................................................................................................................................293 POINTS TO REMEMBER WHEN TROUBLESHOOTING................................................................................................................................................294 SEQUENCE OF EVENTS IN TROUBLESHOOTING..................................................................................................................................................295 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE.......................................................................................................................................296 CHECKS BEFORE TROUBLESHOOTING..........................................................................................................................................................304 TYPES AND LOCATIONS OF CONNECTORS......................................................................................................................................................305 CONNECTOR LOCATION STEREOGRAM..........................................................................................................................................................311 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS.............................................................................................................................................317 T-BRANCH BOX AND T-BRANCH TABLE........................................................................................................................................................342 EXPLANATION OF FUNCTIONS OF ELECTRIC CONTROL MECHANISM.................................................................................................................................344 METHOD OF DISPLAYING ACTION CODE AND FAILURE CODE......................................................................................................................................348 CHART OF ACTION CODES AND FAILURE CODES, AND RE-ENACTION...............................................................................................................................350 TRANSMISSION CONTROLLER LED DISPLAY....................................................................................................................................................352 METHOD OF USING JUDGEMENT TABLE........................................................................................................................................................353 METHOD OF USING TROUBLESHOOTING CHARTS.................................................................................................................................................354 METHOD OF USING MATRIX TROUBLESHOOTING TABLES..........................................................................................................................................356 TROUBLESHOOTING OF ENGINE (S MODE).....................................................................................................................................................358 METHOD OF USING TROUBLESHOOTING CHARTS.............................................................................................................................................359 S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)......................................................................................................................363 S-2 ENGINE DOES NOT START..........................................................................................................................................................364 (1) ENGINE DOES NOT TURN.......................................................................................................................................................364 (2) ENGINE TURNS BUT NO EXHAUST GAS COMES OUT (FUEL IS NOT BEING INJECTED) (INCLUDING CASES WITH V-TYPE ENGINE WHERE THERE IS NO FUEL INJECTION FOR THE BANK ON ONE SIDE)......365 (3) EXHAUST GAS COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)...................................................................................................366 S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)...........................................................................................................................367 S-4 ENGINE STOPS DURING OPERATIONS (FOR V TYPE ENGINE, INCLUDING CASES WHERE ONE BANK STOPS).......................................................................................368 S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)......................................................................................................................................369 S-6 ENGINE LACKS OUTPUT (NO POWER) (WITH V-TYPE ENGINE, FOR CASES WHERE THERE IS INJECTION FOR ONLY ONE BANK, GO TO TROUBLESHOOTING S-2-(2) OR S-4.)...............................370 S-7 EXHAUST GAS IS BLACK (INCOMPLETE COMBUSTION)...................................................................................................................................371 S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST GAS IS BLUE)..........................................................................................................................372 S-9 OIL BECOMES CONTAMINATED QUICKLY...............................................................................................................................................373 S-10 FUEL CONSUMPTION IS EXCESSIVE.................................................................................................................................................374 S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN.......................................................................................................375 S-12 OIL PRESSURE LAMP LIGHTS UP (DROP IN OIL PRESSURE)............................................................................................................................376 S-13 OIL LEVEL RISES...............................................................................................................................................................377 S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)..............................................................................................................................378 S-15 ABNORMAL NOISE IS MADE........................................................................................................................................................379 S-16 VIBRATION IS EXCESSIVE........................................................................................................................................................380 TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (T MODE)................................................................................................................................381 JUDGEMENT TABLE FOR TRANSMISSION CONTROL SYSTEM RELATED PARTS......................................................................................................................382 ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE.........................................................................................................383 ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION CONTROL SYSTEM.........................................................................................................................387 T-1 FAILURE CODE [10] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN BACKUP LAMP RELAY) IS DISPLAYED............................................................389 T-2 FAILURE CODE [12] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN F SOLENOID) IS DISPLAYED...................................................................390 T-3 FAILURE CODE [13] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN R SOLENOID) IS DISPLAYED...................................................................391 T-4 FAILURE CODE [14] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 1ST SOLENOID) IS DISPLAYED.................................................................392 T-5 FAILURE CODE [15] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 2ND SOLENOID) IS DISPLAYED.................................................................393 T-6 FAILURE CODE [16] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 3RD SOLENOID) IS DISPLAYED.................................................................394 T-7 FAILURE CODE [20] (SHORT CIRCUIT OR DISCONNECTION IN JOYSTICK LEVER SWITCH SYSTEM) IS DISPLAYED................................................................................395 T-8 FAILURE CODE [21] (SHORT CIRCUIT OR DISCONNECTION IN JOYSTICK SHIFT-UP/SHIFT-DOWN SWITCH SYSTEM) IS DISPLAYED..................................................................396 T-9 FAILURE CODE [22] (DISCONNECTION IN TRAVEL SPEED SENSOR) IS DISPLAYED..........................................................................................................397 T-10 FAILURE CODE [23] (SHORT CIRCUIT, DISCONNECTION IN ENGINE SPEED SENSOR SYSTEM) IS DISPLAYED...................................................................................398 T-11 KICKDOWN SWITCH SIGNAL SYSTEM AND HOLD SWITCH SIGNAL SYSTEM...................................................................................................................399 T-12 TRANSMISSION CUT-OFF SIGNAL SYSTEM............................................................................................................................................400 T-13 NEUTRALIZER SIGNAL SYSTEM.....................................................................................................................................................401 T-14 BUZZER SIGNAL SYSTEM..........................................................................................................................................................402 T-15 NETWORK SYSTEM................................................................................................................................................................403 T-16 TRANSMISSION CONTROLLER POWER SOURCE SYSTEM...................................................................................................................................404 T-17 SHORT CIRCUIT IN TRAVEL SPEED SENSOR SYSTEM...................................................................................................................................405 T-18 ABNORMALITY IN MACHINE SELECTION WIRING HARNESS...............................................................................................................................406 TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)........................................................................................................................................407 TROUBLE DATA DISPLAY...............................................................................................................................................................409 ELECTRICAL CIRCUIT DIAGRAM FOR MAIN MONITOR SYSTEM.................................................................................................................................411 M-1 MAIN MONITOR DOES NOT WORK.....................................................................................................................................................413 M-2 WHEN STARTING SWITCH IS TURNED ON (WITHIN 3 SECONDS) AND ENGINE S STARTED IMMEDIATELY, ALL LAMPS STAY LIGHTED UP...............................................................414 M-3 SPEEDOMETER DISPLAY DOES NOT WORK PROPERLY.....................................................................................................................................415 M-4 ABNORMALITY IN SHIFT INDICATOR.................................................................................................................................................416 a) DISPLAYS N EVEN WHEN DIRECTIONAL SWITCH IS AT F.............................................................................................................................416 b) DISPLAYS N EVEN WHEN DIRECTIONAL SWITCH IS AT R.............................................................................................................................416 c) DOES NOT DISPLAY N EVEN WHEN DIRECTIONAL SWITCH IS AT N (DISPLAY 1ST-3RD)...................................................................................................416 M-5 TURN SIGNAL DISPLAY DOES NOT LIGHT UP..........................................................................................................................................418 a) L.H. TURN SIGNAL DISPLAY DOES NOT LIGHT UP..................................................................................................................................418 b) R.H. TURN SIGNAL DISPLAY DOES NOT LIGHT UP..................................................................................................................................418 M-6 ABNORMALITY IN PARKING DISPLAY.................................................................................................................................................420 a) PARKING LAMP DISPLAY DOES NOT LIGHT UP......................................................................................................................................420 b) PARKING LAMP DISPLAY STAYS LIGHTED UP.......................................................................................................................................420 M-7 NIGHT LIGHTING DOES NOT LIGHT UP...............................................................................................................................................421 M-8 ABNORMALITY IN FRONT WORKING LAMP..............................................................................................................................................423 a) NEITHER MONITOR DISPLAY NOR FRONT WORKING LAMP LIGHT UP.....................................................................................................................423 b) WORKING LAMP LIGHTS UP BUT MONITOR DISPLAY DOES NOT LIGHT UP................................................................................................................423 c) MONITOR DISPLAY LIGHTS UP BUT FRONT WORKING LAMP DOES NOT LIGHT UP..........................................................................................................423 M-9 ABNORMALITY IN REAR WORKING LAMP...............................................................................................................................................425 a) NEITHER MONITOR DISPLAY NOR REAR WORKING LAMP LIGHT UP......................................................................................................................425 b) REAR WORKING LAMP LIGHTS UP BUT MONITOR DISPLAY DOES NOT LIGHT UP...........................................................................................................425 c) MONITOR DISPLAY LIGHTS UP BUT REAR WORKING LAMP DOES NOT LIGHT UP...........................................................................................................425 M-10 ABNORMALITY IN TRANSMISSION CUT-OFF...........................................................................................................................................427 a) WHEN MONITOR SWITCH (TRANSMISSION CUT-OFF SWITCH) IS PRESSED, CUT-OFF FUNCTION IS NOT SWITCHED AND DISPLAY DOES NOT CHANGE..................................................427 b) WHEN MONITOR SWITCH (TRANSMISSION CUT-OFF SWITCH) IS OFF, MONITOR DISPLAY GOES OUT BUT CUT-OFF FUNCTION IS ACTUATED WHEN PEDAL IS DEPRESSED.................................427 c) WHEN MONITOR DISPLAY IS TURNED OFF (TRANSMISSION CUT-OFF SWITCH TURNED OFF), CUT-OFF FUNCTION IS ALWAYS ACTUATED............................................................427 d) CUT-OFF FUNCTION IS ALWAYS ACTUATED REGARDLESS OF MONITOR DISPLAY (TRANSMISSION CUT-OFF SWITCH ON OR OFF)...................................................................427 e) MONITOR DISPLAY LIGHTS UP (TRANSMISSION CUT-OFF SWITCH TURNED ON), BUT CUT-OFF FUNCTION IS NOT ACTUATED.....................................................................428 M-11 ABNORMALITY IN LOW IDLE SELECTION.............................................................................................................................................429 a) WHEN MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED ON, THE LOW IDLE SPEED DOES NOT RISE AND DISPLAY DOES NOT CHANGE...................................................429 b) WHEN MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED ON, THE MONITOR LIGHTS UP BUT THE LOW IDLE SPEED DOES NOT RISE.....................................................429 c) WHEN MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED OFF, THE MONITOR GOES OFF BUT THE LOW IDLE SPEED DOES NOT LOWER....................................................430 M-12 ABNORMALITY IN EMERGENCY STEERING NORMAL DISPLAY..............................................................................................................................431 M-13 ABNORMALITY IN EMERGENCY STEERING ACTUATION DISPLAY...........................................................................................................................432 a) EMERGENCY STEERING ACTUATION DISPLAY DOES NOT LIGHT UP......................................................................................................................432 b) EMERGENCY STEERING ACTUATION DISPLAY STAYS LIGHTED UP.......................................................................................................................432 M-14 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING.................................................................................................................................433 a) WHEN PARKING BRAKE IS APPLIED, BUZZER SOUNDS (INTERMITTENTLY) AND CAUTION LAMP FLASHES EVEN WHEN DIRECTIONAL SWITCH IS AT N.................................................433 b) WHEN PARKING BRAKE IS APPLIED, BUZZER DOES NOT SOUND AND CAUTION LAMP DOES NOT LIGHT UP EVEN WHEN DIRECTIONAL SWITCH IS AT POSITION OTHER THAN N............................433 M-15 WHEN PARKING BRAKE DRAGGING WARNING IS GIVEN, BUZZER AND CAUTION LAMP ARE ACTUATED CONTINUOUSLY, OR THEY ARE NOT ACTUATED.....................................................434 a) ACTUATED CONTINUOUSLY.......................................................................................................................................................434 b) NOT ACTUATED................................................................................................................................................................434 M-16 ABNORMALITY IN BUZZER.........................................................................................................................................................435 a) BUZZER DOES NOT SOUND WHEN STARTING SWITCH IS AT ON (FOR 3 SECONDS) (DURING SELF-CHECK).....................................................................................435 b) BUZZER ALWAYS SOUNDS........................................................................................................................................................435 M-17 CONDITION OF MONITOR SWITCHES IS NOT STORED IN MEMORY.........................................................................................................................436 M-18 ABNORMALITY IN FAILURE DISPLAY MODE...........................................................................................................................................437 a) DOES NOT ENTER FAILURE DISPLAY MODE.........................................................................................................................................437 b) COUNT FOR TIME ELAPSED SINCE FAILURE IN FAILURE DISPLAY MODE DOES NOT ADVANCE...............................................................................................437 M-19 BUZZER IS NOT MADE TO SOUND BY TRANSMISSION & JOYSTICK STEERING CONTROLLER....................................................................................................438 M-20 ABNORMALITY IN AUTO-GREASING SYSTEM...........................................................................................................................................439 a) FORCED GREASING CANNOT BE CARRIED OUT.......................................................................................................................................439 b) MONITOR DISPLAY FLASHES RAPIDLY (2 TIMES/SEC)...............................................................................................................................439 c) WHEN NO MORE GREASE REMAINS, MONITOR DISPLAY FLASHES RAPIDLY (2 TIMES/SEC)..................................................................................................439 d) MONITOR DISPLAY FLASHES SLOWLY (1 TIME/SEC) CONFIRM THAT GREASE IS NOT EMPTY................................................................................................440 e) MONITOR DISPLAY GOES OUT....................................................................................................................................................440 M-21 FAILURE CODE IS NOT SENT TO MAIN MONITOR (ABNORMALITY IN NETWORK).............................................................................................................441 TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE).................................................................................................................................442 ELECTRICAL CIRCUIT DIAGRAM FOR MAINTENANCE MONITOR SYSTEM..........................................................................................................................443 K-1 WHEN STARTING SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR DO NOT LIGHT UP FOR 3 SECONDS, MAINTENANCE MONITOR DOSE NOT WORK...........................................445 a) NO LAMPS ON MAINTENANCE MONITOR LIGHT UP....................................................................................................................................445 b) SOME LAMPS DO NOT LIGHT UP..................................................................................................................................................445 K-2 WHEN STARTING SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR LIGHT UP BUT DO NOT GO OUT (EVEN AFTER 3 SECONDS)..........................................................446 K-3 WHEN ENGINE IS STARTED IMMEDIATELY AFTER STARTING SWITCH IS TURNED ON (WITHIN 3 SECONDS), NO LAMPS ON MAINTENANCE MONITOR GO OUT...............................................447 K-4 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), CHECK ITEMS FLASH..........................................................................................................449 a) ENGINE OIL LEVEL DISPLAY FLASHES............................................................................................................................................449 b) ENGINE WATER LEVEL DISPLAY FLASHES..........................................................................................................................................450 K-5 WHEN STARTING SWITCH IS TURNED ON (ENGINE STARTED), CAUTION ITEMS FLASH........................................................................................................451 a) ENGINE OIL PRESSURE DISPLAY FLASHES.........................................................................................................................................451 b) BATTERY CHARGE LEVEL DISPLAY FLASHES........................................................................................................................................452 c) BRAKE OIL PRESSURE DISPLAY FLASHES (CHECK THAT THE BRAKE OIL PRESSURE IS CORRECT.)..........................................................................................453 d) AIR CLEANER (R.H.) CLOGGING DISPLAY FLASHES (CHECK THAT THE AIR CLEANER (R.H.) IS NOT CLOGGED.).............................................................................455 e) AIR CLEANER (L.H.) CLOGGING DISPLAY FLASHES (CHECK THAT THE AIR CLEANER (L.H.) IS NOT CLOGGED.).............................................................................456 f) TRANSMISSION OIL FILTER DISPLAY FLASHES (THE TRANSMISSION OIL FILTER MUST NOT BE CLOGGED.)..................................................................................457 K-6 CAUTION ITEMS ARE FLASHING BUT BUZZER DOES NOT SOUND...........................................................................................................................458 K-7 THERE IS NO ABNORMALITY IN MONITOR DISPLAY BUT CAUTION BUZZER SOUNDS...........................................................................................................459 K-8 CAUTION ITEMS ARE FLASHING BUT NEITHER CHECK LAMP NOR CAUTION LAMP FLASHES.....................................................................................................460 a) CHECK LAMP..................................................................................................................................................................460 b) CAUTION LAMP................................................................................................................................................................460 K-9 THERE IS NO ABNORMALITY IN MAINTENANCE MONITOR DISPLAY BUT CHECK LAMP OR CAUTION LAMP LIGHTS UP................................................................................461 a) CHECK LAMP..................................................................................................................................................................461 b) CAUTION LAMP................................................................................................................................................................461 K-10 ONLY NIGHT LIGHTING OF MAINTENANCE MONITOR DOES NOT LIGHT UP WHEN LIGHTING SWITCH IS TURNED ON................................................................................462 K-11 NIGHT LIGHTING LIGHTS UP EVEN WHEN LIGHTING SWITCH IS TURNED OFF..............................................................................................................463 K-12 SERVICE METER DOES NOT WORK...................................................................................................................................................464 K-13 SERVICE METER IS RUNNING EVEN WHEN ENGINE IS STOPPED..........................................................................................................................464 K-14 ABNORMALITY IN GAUGE DISPLAY..................................................................................................................................................466 a) ABNORMALITY IN FUEL GAUGE...................................................................................................................................................466 b) ABNORMALITY IN ENGINE WATER TEMPERATURE GAUGE...............................................................................................................................467 c) ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE.......................................................................................................................468 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)..........................................................................................................................................469 ELECTRICAL CIRCUIT DIAGRAM FOR POWER SUPPLY, ENGINE STARTING, ENGINE STOPPING AND PREHEATING.......................................................................................470 ELECTRICAL CIRCUIT DIAGRAM FOR PARKING BRAKE.......................................................................................................................................472 ELECTRICAL CIRCUIT DIAGRAM FOR BOOM KICK-OUT AND BUCKET POSITIONER.................................................................................................................473 E-1 ENGINE DOES NOT START..........................................................................................................................................................474 a) STARTING MOTOR DOES NOT TURN................................................................................................................................................474 b) STARTING MOTOR TURNS........................................................................................................................................................478 E-2 ENGINE DOES NOT................................................................................................................................................................479 E-3 ABNORMALITY IN PREHEATING SYSTEM...............................................................................................................................................482 a) DOES NOT CARRY OUT PREHEATING...............................................................................................................................................482 b) ONLY MONITOR DISPLAY LIGHTS UP..............................................................................................................................................482 c) MONITOR DISPLAY DOES NOT LIGHT UP WHEN PREHEATING IS COMPLETED..............................................................................................................483 d) MONITOR DISPLAY KEEPS LIGHTING UP WHEN PREHEATING IS NOT COMPLETED..........................................................................................................483 E-4 PARKING BRAKE DOES NOT HAVE EFFECT.............................................................................................................................................485 a) PARKING BRAKE HAS NO EFFECT WHEN PARKING BRAKE SWITCH IS TURNED ON..........................................................................................................485 b) PARKING BRAKE HAS NO EFFECT WHEN BRAKE PRESSURE (ACCUMULATOR PRESSURE) DROPS (DOES NOT WORK AS EMERGENCY BRAKE).............................................................485 E-5 PARKING BRAKE IS APPLIED WHEN MACHINE IS TRAVELING.............................................................................................................................486 E-6 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED ON....................................................................................................................488 E-7 TRANSMISSION DOES NOT CHANGE TO NEUTRAL WHEN PARKING BRAKE IS APPLIED (BUT PARKING BRAKE WORKS NORMALLY).......................................................................488 E-8 KICK-DOWN SWITCH DOES NOT WORK.................................................................................................................................................490 a) KICK-DOWN SWITCH DOES NOT WORK EVEN THOUGH GEAR SHIFT WORKS NORMALLY........................................................................................................490 b) KICK-DOWN CANNOT BE CANCELED................................................................................................................................................491 E-9 BOOM KICK-OUT DOES NOT WORK....................................................................................................................................................492 E-10 ABNORMALITY IN BUCKET POSITIONER FUNCTION.....................................................................................................................................495 E-11 ABNORMALITY IN LIGHTING UP OF FRONT WORKING LAMP..............................................................................................................................498 E-12 ABNORMALITY IN LIGHTING UP OF REAR WORKING LAMP...............................................................................................................................498 E-13 ABNORMALITY IN TRANSMISSION CUT-OFF...........................................................................................................................................498 E-14 ABNORMALITY IN LOW IDLING SELECTION...........................................................................................................................................498 E-15 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING.................................................................................................................................498 E-16 ABNORMALITY IN BUZZER.........................................................................................................................................................498 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)............................................................................................................................499 H-1 MACHINE DOES NOT MOVE..........................................................................................................................................................500 H-2 MACHINE LACKS POWER OR SPEED (EVERY SPEED RANGE)...............................................................................................................................501 H-3 EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR......................................................................................................................502 H-4 TORQUE CONVERTER OIL TEMPERATURE IS HIGH.......................................................................................................................................503 H-5 STEERING DOES NOT TURN.........................................................................................................................................................504 H-6 TURNING, RESPONSE OF STEERING IS POOR..........................................................................................................................................505 H-7 JOYSTICK LEVER IS HEAVY........................................................................................................................................................506 H-8 STEERING WHEEL SHAKES OR JERKS.................................................................................................................................................507 H-9 MINIMUM TURNING RADII TO RIGHT AND LEFT ARE DIFFERENT..........................................................................................................................508 H-10 WHEEL BRAKES DO NOT WORK OR BRAKING EFFECT IS POOR............................................................................................................................509 H-11 WHEEL BRAKES ARE NOT RELEASED OR BRAKES DRAG..................................................................................................................................510 H-12 BOOM DOES NOT RISE............................................................................................................................................................511 H-13 BOOM MOVES SLOWLY OR DOES NOT HAVE SUFFICIENT LIFTING POWER...................................................................................................................512 H-14 WHEN RAISING BOOM, BECOMES SLOW AT CERTAIN HEIGHT.............................................................................................................................513 H-15 BOOM CYLINDER CANNOT HOLD DOWN BUCKET.........................................................................................................................................513 H-16 BOOM HAS LARGE AMOUNT OF HYDRAULIC DRIFT......................................................................................................................................513 H-17 BOOM FLUCTUATES WHILE WORKING.................................................................................................................................................514 H-18 BOOM DROPS MOMENTARILY WHEN LEVER IS OPERATED FROM HOLD TO RAISE..............................................................................................................514 H-19 BUCKET DOES NOT TILT BACK.....................................................................................................................................................515 H-20 BUCKET MOVES SLOWLY OR HAS INSUFFICIENT TILT BACK POWER.......................................................................................................................516 H-21 BUCKET MOVEMENT BECOMES SLOW DURING TILT BACK.................................................................................................................................517 H-22 BUCKET CYLINDER CANNOT HOLD DOWN BUCKET.......................................................................................................................................517 H-23 BUCKET HAS LARGE AMOUNT OF HYDRAULIC DRIFT....................................................................................................................................517 H-24 BUCKET FLUCTUATES WHILE TRAVELING UNDER LOAD (WORK EQUIPMENT VALVE "HOLD")....................................................................................................518 H-25 BUCKET DUMPS MOMENTARILY WHEN LEVER IS OPERATED FROM HOLD TO TILT.............................................................................................................518 H-26 BOOM AND BUCKET LEVERS DO NOT MOVE SMOOTHLY...................................................................................................................................519 TROUBLESHOOTING OF AJSS (ADVANCED JOYSTICK STEERING SYSTEM) CONTROL SYSTEM (A MODE)....................................................................................................520 JUDGEMENT TABLE FOR AJSS CONTROL SYSTEM............................................................................................................................................521 OPERATIONS OF CONTROLLER AGAINST ABNORMALITY AND CONDITIONS OF MACHINE CAUSED BY ABNORMALITY.......................................................................................522 ELECTRIC CIRCUIT DIAGRAM FOR AJSS CONTROL..........................................................................................................................................526 A-1 FAILURE CODE [56] (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN CAUTION BUZZER RELAY SYSTEM) IS DISPLAYED.............................................................528 A-2 FAILURE CODE [57] (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN STEERING LEVER ANGLE SENSOR SYSTEM) IS DISPLAYED......................................................529 A-3 FAILURE CODE [58] (DEVIATION OF STEERING LEVER ANGLE SENSOR AND FRAME ANGLE SENSOR SIGNALS) IS DISPLAYED.......................................................................530 A-4 FAILURE CODE [59] (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN FRAME ANGLE SENSOR SYSTEM) IS DISPLAYED...............................................................531 A-5 FAILURE CODE [60] (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN STEERING LEVER LOCK PRESSURE SWITCH SYSTEM) IS DISPLAYED..............................................532 A-6 FAILURE CODE [62] (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN STEERING NEUTRAL INTERLOCK RELAY SYSTEM) IS DISPLAYED.................................................533 A-7 FAILURE CODE [63] (DISCONNECTION, SHORT CIRCUIT WITH CHASSIS GROUND, OR SHORT CIRCUIT WITH POWER SOURCE IN STEERING MAIN PRESSURE CONTROL EPC SOLENOID SYSTEM) IS DISPLAYED....534 A-8 STEERING SPEEDS IN BOTH DIRECTIONS ARE DIFFERENT...............................................................................................................................535 A-9 ABNORMALITY IN CONSOLE SWITCH (ADJUSTMENT OF STEERING LEVER ANGLE SENSOR AND FRAME ANGLE SENSOR IS IMPOSSIBLE).................................................................536 A-10 ABNORMALITY IN POWER SOURCE AND VOLTAGE.......................................................................................................................................537 30 DISASSEMBLY AND ASSEMBLY....................................................................................................................................................................538 METHOD OF USING MANUAL.....................................................................................................................................................................540 PRECAUTIONS WHEN CARRYING OUT OPERATION....................................................................................................................................................542 SPECIAL TOOL LIST..........................................................................................................................................................................544 SKETCHES OF SPECIAL TOOLS..................................................................................................................................................................550 ENGINE RELATED PARTS.......................................................................................................................................................................558 STARTING MOTOR.........................................................................................................................................................................558 ALTERNATOR.............................................................................................................................................................................558 ENGINE OIL COOLER......................................................................................................................................................................558 FUEL INJECTION PUMP FOR LEFT BANK......................................................................................................................................................558 FUEL INJECTION PUMP FOR RIGHT BANK.....................................................................................................................................................558 WATER PUMP.............................................................................................................................................................................558 NOZZELE HODLER.........................................................................................................................................................................558 TURBOCHARGER...........................................................................................................................................................................558 ENGINE FRONT SEAL......................................................................................................................................................................558 ENGINE REAR SEAL.......................................................................................................................................................................558 CYLINDER HEAD..........................................................................................................................................................................558 REMOVAL AND INSTALLATION OF RADIATOR.......................................................................................................................................................559 REMOVAL AND INSTALLATION OF ENGINE.........................................................................................................................................................562 REMOVAL AND INSTALLATION OF DAMPER ........................................................................................................................................................567 DISASSEMBLY AND ASSEMBLY OF DAMPER.........................................................................................................................................................568 REMOVAL AND INSTALLATION OF TORQUE CONVERTER AND TRANSMISSION ASSEMBLY.....................................................................................................................572 DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER...............................................................................................................................................579 DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER VALVE.........................................................................................................................................586 DISASSEMBLY AND ASSEMBLY OF TRANSMISSION...................................................................................................................................................587 REMOVAL AND INSTALLATION OF TRANSMISSION VALVE.............................................................................................................................................611 DISASSEMBLY AND ASSEMBLY OF TRANSMISSION VALVE.............................................................................................................................................612 DISASSEMBLY AND ASSEMBLY OF TRANSFER.......................................................................................................................................................616 DISASSEMBLY AND ASSEMBLY OF PTO............................................................................................................................................................628 REMOVAL AND INSTALLATION OF CENTER SUPPORT.................................................................................................................................................633 DISASSEMBLY AND ASSEMBLY OF CENTER SUPPORT.................................................................................................................................................635 DISASSEMBLY AND ASSEMBLY OF DRIVE SHAFT....................................................................................................................................................639 REMOVAL AND INSTALLATION OF FRONT AXLE.....................................................................................................................................................642 REMOVAL AND INSTALLATION OF REAR AXLE......................................................................................................................................................644 REMOVAL AND INSTALLATION OF DIFFERENTIAL...................................................................................................................................................649 DISASSEMBLY AND ASSEMBLY OF DIFFERENTIAL...................................................................................................................................................651 DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE....................................................................................................................................................659 REMOVAL AND INSTALLATION OF ROTARY VALVE...................................................................................................................................................664 REMOVAL AND INSTALLATION OF EMERGENCY STEERING PUMP........................................................................................................................................665 REMOVAL AND INSTALLATION OF DIVERTER VALVE.................................................................................................................................................666 DISASSEMBLY AND ASSEMBLY OF DIVERTER VALVE.................................................................................................................................................667 REMOVAL AND INSTALLATION OF ACCUMULATOR CHARGE VALVE.......................................................................................................................................669 DISASSEMBLY AND ASSEMBLY OF ACCUMULATOR CHARGE VALVE.......................................................................................................................................670 REMOVAL AND INSTALLATION OF STEERING CYLINDER..............................................................................................................................................672 REMOVAL AND INSTALLATION OF STEERING VALVE.................................................................................................................................................674 REMOVAL AND INSTALLATION OF BRAKE VALVE....................................................................................................................................................676 REMOVAL AND INSTALLATION OF SLACK ADJUSTER.................................................................................................................................................677 DISASSEMBLY AND ASSEMBLY OF SLACK ADJUSTER.................................................................................................................................................678 REMOVAL AND INSTALLATION OF BRAKE..........................................................................................................................................................680 DISASSEMBLY AND ASSEMBLY OF BRAKE..........................................................................................................................................................681 REMOVAL AND INSTALLATION OF PARKING BRAKE CALIPERS.........................................................................................................................................685 DISASSEMBLY AND ASSEMBLY OF PARKING BRAKE CALIPERS.........................................................................................................................................686 REMOVAL AND INSTALLATION OF PARKING BRAKE PAD..............................................................................................................................................688 REMOVAL AND INSTALLATION OF PARKING BRAKE SPRING CYLINDER..................................................................................................................................689 REMOVAL AND INSTALLATION OF BRAKE OIL TANK.................................................................................................................................................690 REMOVAL AND INSTALLATION OF HYDRAULIC PUMP.................................................................................................................................................691 REMOVAL AND INSTALLATION OF HYDRAULIC TANK AND FILTER CASE ASSEMBLY........................................................................................................................693 REMOVAL AND INSTALLATION OF PPC VALVE......................................................................................................................................................695 DISASSEMBLY AND ASSEMBLY OF PPC VALVE......................................................................................................................................................697 REMOVAL AND INSTALLATION OF WORK EQUIPMENT CONTROL VALVE ASSEMBLY..........................................................................................................................698 DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT CONTROL VALVE...................................................................................................................................700 REMOVAL AND INSTALLATION OF CAB............................................................................................................................................................703 REMOVAL AND INSTALLATION OF FLOOR FRAME....................................................................................................................................................705 REMOVAL AND INSTALLATION OF CENTER HINGE PIN...............................................................................................................................................708 REMOVAL AND INSTALLATION OF WORK EQUIPMENT.................................................................................................................................................715 REPLACEMENT OF BOOM FRONT END BUSH.........................................................................................................................................................720 REMOVAL AND INSTALLATION OF BUCKET CYLINDER................................................................................................................................................721 REMOVAL AND INSTALLATION OF LIFT CYLINDER..................................................................................................................................................722 DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER.............................................................................................................................................724 REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT...........................................................................................................................................728 REMOVAL AND INSTALLATION OF AIR CONDITIONER COMPRESSOR.....................................................................................................................................730 REMOVAL AND INSTALLATION OF RECEIVER TANK..................................................................................................................................................731 REMOVAL AND INSTALLATION OF AIR CONDITIONER CONDENSER......................................................................................................................................732 REMOVAL AND INSTALLATION OF TRANSMISSION AND JOYSTICK STEERING CONTROLLER..................................................................................................................733 REMOVAL AND INSTALLATION OF MAIN MONITOR...................................................................................................................................................734 REMOVAL AND INSTALLATION OF FUEL TANK......................................................................................................................................................736 REMOVAL AND INSTALLATION OF COUNTERWEIGHT..................................................................................................................................................738 40 MAINTENANCE STANDARD........................................................................................................................................................................739 ENGINE MOUNT...............................................................................................................................................................................740 TRANSMISSION MOUNT.........................................................................................................................................................................741 DAMPER.....................................................................................................................................................................................742 TORQUE CONVERTER CHARGING, PPC AND BRAKE PUMP..............................................................................................................................................744 TORQUE CONVERTER...........................................................................................................................................................................746 TORQUE CONVERTER REGULATOR VALVE...........................................................................................................................................................747 TRANSMISSION (1/2).........................................................................................................................................................................748 TRANSMISSION (2/2).........................................................................................................................................................................750 TRANSFER...................................................................................................................................................................................751 TRANSMISSION CONTROL VALVE.................................................................................................................................................................752 DRIVE SHAFT................................................................................................................................................................................757 CENTER SUPPORT.............................................................................................................................................................................758 DIFFERENTIAL (1/2).........................................................................................................................................................................759 DIFFERENTIAL (2/2).........................................................................................................................................................................760 FINAL DRIVE................................................................................................................................................................................762 AXLE MOUNT.................................................................................................................................................................................764 CENTER HINGE PIN...........................................................................................................................................................................766 STEERING DEMAND VALVE......................................................................................................................................................................768 DIVERTER VALVE.............................................................................................................................................................................770 STEERING CYLINDER MOUNT....................................................................................................................................................................771 EMERGENCY STEERING PUMP....................................................................................................................................................................772 BRAKE VALVE................................................................................................................................................................................773 SLACK ADJUSTER.............................................................................................................................................................................776 BRAKE......................................................................................................................................................................................777 PARKING BRAKE..............................................................................................................................................................................779 PPC VALVE..................................................................................................................................................................................781 PPC RELIEF VALVE...........................................................................................................................................................................783 CONTROL PUMP...............................................................................................................................................................................784 STEERING PUMP..............................................................................................................................................................................785 SWITCH PUMP................................................................................................................................................................................786 MAIN PISTON PUMP...........................................................................................................................................................................787 MAIN CONTROL VALVE.........................................................................................................................................................................788 HYDRAULIC CYLINDER.........................................................................................................................................................................790 WORK EQUIPMENT LINKAGE.....................................................................................................................................................................791 BUCKET POSITIONER AND BOOM KICK-OUT........................................................................................................................................................793 ROPS CANOPY................................................................................................................................................................................794 90 OTHERS......................................................................................................................................................................................795 HYDRAULIC CIRCUIT DIAGRAM..................................................................................................................................................................796 ELECTRICAL CIRCUIT DIAGRAM (1/5)...........................................................................................................................................................797 ELECTRICAL CIRCUIT DIAGRAM (2/5)...........................................................................................................................................................798 ELECTRICAL CIRCUIT DIAGRAM (3/5)...........................................................................................................................................................799 ELECTRICAL CIRCUIT DIAGRAM (4/5)...........................................................................................................................................................800 ELECTRICAL CIRCUIT DIAGRAM (5/5)...........................................................................................................................................................801 ELECTRICAL CIRCUIT DIAGRAM (ENGINE SHUT-DOWN)..............................................................................................................................................802 ELECTRICAL CIRCUIT DIAGRAM (AUTO-GREASING).................................................................................................................................................803
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