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KOMATSU BR380JG-1 SHOP MANUAL SEBM034104 – PDF DOWNLOAD
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Description
KOMATSU BR380JG-1 SHOP MANUAL SEBM034104 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU BR380JG-1 SHOP MANUAL SEBM034104 – PDF DOWNLOAD
Language : English
Pages : 557
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU BR380JG-1 SHOP MANUAL SEBM034104 – PDF DOWNLOAD
COVER........................................................................................................................... 1 CONTENTS........................................................................................................................ 2 01 GENERAL...................................................................................................................... 27 SPECIFICATION DRAWINGS...................................................................................................... 28 SPECIFICATIONS.............................................................................................................. 29 WEIGHT TABLE................................................................................................................ 31 FUEL, COOLANT AND LUBRICANTS................................................................................................ 32 10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD................................................................................. 35 ENGINE RELATED PARTS........................................................................................................ 36 RADIATOR,OIL COOLER,AFTERCOOLER............................................................................................. 37 POWER TRAIN................................................................................................................. 38 DRIVE SYSTEMS FOR COMPONENTS................................................................................................ 39 FINAL DRIVE................................................................................................................. 40 TRACK FRAME AND RECOIL SPRING............................................................................................... 42 IDLER ...................................................................................................................... 44 CARRIER ROLLER.............................................................................................................. 46 TRACK ROLLER................................................................................................................ 47 TRACK SHOE.................................................................................................................. 48 ARRANGEMENT OF HYDRAULIC EQUIPMENT.......................................................................................... 52 HYDRAULIC TANK AND HYDRAULIC OIL FILTER..................................................................................... 53 HYDRAULIC PUMP.............................................................................................................. 54 CONTROL VALVE............................................................................................................... 73 SELF-REDUCING PRESSURE VALVE................................................................................................ 80 CLSS........................................................................................................................ 85 CRUSHER MOTOR...............................................................................................................101 GRIZZLY FEEDER MOTOR........................................................................................................105 CONVEYOR MOTOR..............................................................................................................106 TRAVEL MOTOR................................................................................................................107 TRAVEL JUNCTION VALVE.......................................................................................................114 VALVE CONTROL...............................................................................................................116 TRAVEL PPC VALVE............................................................................................................117 SOLENOID VALVE..............................................................................................................126 EPC VALVE...................................................................................................................128 ELECTROMAGNETIC SELECTOR VALVE..............................................................................................132 GRIZZLY FEEDER SEMIAUTOMATIC SYSTEM.........................................................................................134 ABNORMAL LOAD STOP SYSTEM...................................................................................................135 PRIMARY BELT CONVEYOR.......................................................................................................136 GRIZZLY FEEDER .............................................................................................................137 CRUSHER.....................................................................................................................140 CRUSHER TOOTH TIP ADJUSTMENT SYSTEM.........................................................................................146 VIBRATOR ...................................................................................................................149 ENGINE CONTROL..............................................................................................................150 ELECTRONIC CONTROL SYSTEM DEVICES...........................................................................................156 MULTI MONITOR SYSTEM........................................................................................................170 SENSOR......................................................................................................................197 20 TESTING AND ADJUSTING........................................................................................................200 STANDARD VALUE TABLE FOR ENGINE.............................................................................................201 STANDARD VALUE TABLE FOR CHASSIS............................................................................................202 TESTING AND ADJUSTING.......................................................................................................207 TOOLS FOR TESTING,ADJUSTING AND TROUBLESHOOTING.........................................................................208 INSPECTION AND ADJUSTMENT OF ENGINE RPM.................................................................................210 MEASURING EXHAUST GAS COLOR.............................................................................................212 ADJUSTING VALVE CLEARANCE...............................................................................................213 MEASURING COMPRESSION PRESSURE..........................................................................................215 MEASURING BLOW-BY PRESSURE..............................................................................................216 INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING......................................................................217 MEASUREMENT OF ENGINE OIL PRESSURE......................................................................................219 ADJUSTMENT OF ENGINE SPEED SENSOR.......................................................................................220 DIODE INSPECTION PROCEDURE..............................................................................................221 EMERGENT ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM...................................................................222 TESTING AND ADJUSTING OIL PRESSURES IN WORK EQUIPMENT AND TRAVEL CIRCUITS...............................................223 TESTING CONTROL CIRCUIT OIL PRESSURE (OIL PRESSURE REDUCED BY SELF-PRESSURE)............................................227 TESTING AND ADJUSTING PUMP PC CONTROL CIRCUIT OIL PRESSURE..............................................................228 TESTING AND SDJUSTING PUMP LS CONTROL CIRCUIT OIL PRESSURE..............................................................231 MEASURING SOLENOID VALVE OUTPUT PRESSURE................................................................................235 MEASURING PPC VALVE OUTPUT PRESSURE.....................................................................................237 MEASURING OIL LEAKAGE...................................................................................................238 BLEEDING AIR FROM EACH PART.............................................................................................239 TESTING TRAVEL DEVIATION................................................................................................241 INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION.........................................................................242 SPECIAL FUNCTIONS OF MONITOR PANEL......................................................................................243 TESTING AND ADJUSTING JAW CRUSHER.......................................................................................270 TESTING AND ADJUSTING CRUSHER DRIVE BELT TENSION........................................................................278 TESTING AND ADJUSTING PRIMARY BELT CONVEYOR.............................................................................279 TESTING AND ADJUSTING MAGNETIC SEPARATOR................................................................................280 LIST OF COMPANIES WHICH HANDLES RADIO CONTROLLERS.......................................................................282 PREPARATION WORK FOR TROUBLESHOOTING FOR ELECTRICAL SYSTEM..............................................................283 TROUBLESHOOTING.............................................................................................................284 POINTS TO REMEMBER WHEN TROUBLESHOOTING.................................................................................285 SEQUENCE OF EVENTS IN TROUBLESHOOTING...................................................................................286 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE........................................................................287 CHECKS BEFORE TROUBLESHOOTING...........................................................................................295 CLASSIFICATION AND STEPS FOR TROUBLESHOOTING............................................................................298 TYPES AND LOCATIONS OF CONNECTORS.......................................................................................301 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS..............................................................................330 T-BRANCH BOX AND T-BRANCH TABLE.........................................................................................350 TROUBLESHOOTING WHEN ERROR CODE "ELECTRICAL SYSTEM" AND FAILURE CODE "MECHANICAL SYSTEM" ARE INDICATED..................352 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE......................................................................354 ELECTRICAL SYSTEM ERROR CODE [E201] (DISCONNECTION IN PRIMARY BELT CONVEYOR FORWARD SOLENOID).......................356 ELECTRICAL SYSTEM ERROR CODE [E202] (SHORT CRCUIT IN PRIMARY BELT CONVEYOR FORWARD SOLENOID)........................357 ELECTRICAL SYSTEM ERROR CODE [E203] (DISCONNECTION IN CRUSHER FORWARD EPC VALVE)....................................358 ELECTRICAL SYSTEM ERROR CODE [E204] (SHORT CIRCUIT IN CRUSHER FORWARD EPC VALVE)....................................359 ELECTRICAL SYSTEM ERROR CODE [E205] (DISCONNECTION IN CRUSHER REVERSE EPC VALVE)....................................360 ELECTRICAL SYSTEM ERROR CODE [E206] (SHORT CIRCUIT IN CRUSHER REVERSE EPC VALVE)....................................361 ELECTRICAL SYSTEM ERROR CODE [E207] (DISCONNECTION IN FEEDER FORWARD EPC VALVE).....................................362 ELECTRICAL SYSTEM ERROR CODE [E208] (SHORT CIRCUIT IN FEEDER FORWARD EPC VALVE).....................................363 ELECTRICAL SYSTEM ERROR CODE [E211] (SHORT CIRCUIT IN ELECTRICAL INTAKE AIR HEATER RELAY)...........................364 ELECTRICAL SYSTEM ERROR CODE [E212] (DISCONNECTION IN PRESSURE ABNORMALITY PROCESSING RELAY)........................365 ELECTRICAL SYSTEM ERROR CODE [E213] (DISCONNECTION IN ACCESSORY DRIVE EPC VALVE)....................................366 ELECTRICAL SYSTEM ERROR CODE [E214] (SHORT CIRCUIT IN ACCESSORY DRIVE EPC VALVE)....................................367 ELECTRICAL SYSTEM ERROR CODE [E217] (DISCONNECTION, SHORT CIRCUIT, OR ABNORMAL INPUT IN MODEL SELECTION CIRCUIT)....368 ELECTRICAL SYSTEM ERROR CODE [E218] (DISCONNECTION IN S-NET SIGNAL LINE)............................................369 ELECTRICAL SYSTEM ERROR CODE [E222] (SHORT CIRCUIT IN LS-EPC SOLENOID)..............................................370 ELECTRICAL SYSTEM ERROR CODE [E223] (DISCONNECTION IN LS-EPC SOLENOID)..............................................371 ELECTRICAL SYSTEM ERROR CODE [E224] (ABNORMALITY IN F PUMP PRESSURE SENSOR).........................................372 ELECTRICAL SYSTEM ERROR CODE [E225] (ABNORMALITY IN R PUMP PRESSURE SENSOR).........................................374 ELECTRICAL SYSTEM ERROR CODE [E226] (ABNORMALITY IN PRESSURE SENSOR POWER SUPPLY)...................................376 ELECTRICAL SYSTEM ERROR CODE [E227] (ABNORMALITY IN ENGINE SPEED SENSOR)............................................378 ELECTRICAL SYSTEM ERROR CODE [E232] (SHORT CIRCUIT IN PC-EPC SOLENOID)..............................................379 ELECTRICAL SYSTEM ERROR CODE [E233] (DISCONNECTION IN PC-EPC SOLENOID)..............................................380 ELECTRICAL SYSTEM ERROR CODE [E234] (SHORT CIRCUIT IN ROTARY LAMP SSR)..............................................381 ELECTRICAL SYSTEM ERROR CODE [E235] (SHORT CIRCUIT IN HORN RELAY)...................................................382 ELECTRICAL SYSTEM ERROR CODE [E240] (SHORT CIRCUIT IN PRESSURE ABNORMALITY PROCESSING RELAY)........................383 ELECTRICAL SYSTEM ERROR CODE [E241] (DISCONNECTION IN PRIMARY BELT CONVEYOR REVERSE SOLENOID).......................384 ELECTRICAL SYSTEM ERROR CODE [E242] (SHORT CIRCUIT IN PRIMARY BELT CONVEYOR REVERSE SOLENOID).......................385 ELECTRICAL SYSTEM ERROR CODE [E243] (DISCONNECTION IN LOCK CYLINDER RESET SOLENOID).................................386 ELECTRICAL SYSTEM ERROR CODE [E244] (SHORT CIRCUIT IN LOCK CYLINDER RESET SOLENOID).................................387 ELECTRICAL SYSTEM ERROR CODE [E246] (SHORT CIRCUIT IN LOCK CYLINDER EXTENSION RELAY)................................388 ELECTRICAL SYSTEM ERROR CODE [E247] (DISCONNECTION IN LOCK CYLINDER RETRACTION SOLENOID)............................389 ELECTRICAL SYSTEM ERROR CODE [E248] (SHORT CIRCUIT IN LOCK CYLINDER RETRACTION SOLENOID)............................390 ELECTRICAL SYSTEM ERROR CODE [E249] (DISCONNECTION IN MAGNETIC SEPARATOR RELAY).....................................391 ELECTRICAL SYSTEM ERROR CODE [E250] (SHORT CIRCUIT IN MAGNETIC SEPARATOR RELAY).....................................392 ELECTRICAL SYSTEM ERROR CODE [E301] (DISCONNECTION IN ENGINE STOP SWITCH)...........................................393 ELECTRICAL SYSTEM ERROR CODE [E302] (SHORT CIRCUIT IN PRIMARY BELT CONVEYOR-ON SWITCH)..............................394 ELECTRICAL SYSTEM ERROR CODE [E303] (DISCONNECTION IN PRIMARY BELT CONVEYOR-ON SWITCH)..............................395 ELECTRICAL SYSTEM ERROR CODE [E304] (SHORT CIRCUIT IN CRUSHER-ON SWITCH)............................................396 ELECTRICAL SYSTEM ERROR CODE [E305] (DISCONNECTION IN CRUSHER-OFF SWITCH)...........................................398 ELECTRICAL SYSTEM ERROR CODE [E306] (ABNORMALITY IN GOVERNOR POTENTIOMETER).........................................400 ELECTRICAL SYSTEM ERROR CODE [E308] (ABNORMALITY IN FUEL CONTROL DIAL)..............................................402 ELECTRICAL SYSTEM ERROR CODE [E315] (SHORT CIRCUIT OF BATTERY RELAY OUTPUT).........................................404 ELECTRICAL SYSTEM ERROR CODE [E316] (STEPPING OUT OF GOVERNOR MOTOR)................................................406 ELECTRICAL SYSTEM ERROR CODE [E317] (DISCONNECTION IN GOVERNOR MOTOR PHASES A AND B)................................407 ELECTRICAL SYSTEM ERROR CODE [E318] (SHORT CIRCUIT IN GOVERNOR MOTOR PHASES A AND B)................................409 ELECTRICAL SYSTEM ERROR CODE [E320] (SHORT CIRCUIT IN FEEDER-ON SWITCH).............................................411 ELECTRICAL SYSTEM ERROR CODE [E321] (DISCONNECTION IN FEEDER-OFF SWITCH)............................................412 ELECTRICAL SYSTEM ERROR CODE [E322] (SHORT CIRCUIT IN CONVEYOR RAISE SWITCH)........................................413 ELECTRICAL SYSTEM ERROR CODE [E323] (SHORT CIRCUIT IN CONVEYOR LOWER SWITCH)........................................414 ELECTRICAL SYSTEM ERROR CODE [E331] (ABNORMALITY IN CLEARANCE SENSOR POTENTIOMETER).................................415 ELECTRICAL SYSTEM ERROR CODE [E332] (SHORT CIRCUIT IN ONE-TOUCH START SWITCH).......................................417 ELECTRICAL SYSTEM ERROR CODE [E333] (DISCONNECTION IN ONE-TOUCH STOP SWITCH)........................................419 ELECTRICAL SYSTEM ERROR CODE [E334] (SHORT CIRCUIT IN MAGNETIC SEPARATOR-ON SWITCH).................................421 ELECTRICAL SYSTEM ERROR CODE [E335] (DISCONNECTION IN MAGNETIC SEPARATOR-OFF SWITCH)................................423 ELECTRICAL SYSTEM ERROR CODE [A000N1] (ENGINE HIGH IDLING SPEED OUT OF STANDARD)....................................425 ELECTRICAL SYSTEM ERROR CODE [A000N2] (ENGINE LOW IDLING SPEED OUT OF STANDARD).....................................425 ELECTRICAL SYSTEM ERROR CODE [AA10NX] (CLOGGED AIR CLEANER).........................................................426 ELECTRICAL SYSTEM ERROR CODE [AB00KE] (ABNORMAL LOWERING OF CHARGING VOLTAGE).......................................427 ELECTRICAL SYSTEM ERROR CODE [B@BAZG] (ABNORMAL LOWERING OF ENGINE OIL PRESSURE)....................................428 ELECTRICAL SYSTEM ERROR CODE [B@BAZK] (ABNORMAL LOWERING OF ENGINE OIL LEVEL).......................................429 ELECTRICAL SYSTEM ERROR CODE [B@BCNS] (OVERHEATING OF ENGINE COOLANT)...............................................430 ELECTRICAL SYSTEM ERROR CODE [B@BCZK] (ABNORMAL LOWERING OF RADIATOR COOLANT LEVEL).................................431 ELECTRICAL SYSTEM ERROR CODE [B@HANS] (OVERHEATING OF HYDRAULIC OIL)................................................432 TROUBLESHOOTING FOR ELECTRICAL SYSTEM (E-MODE)..........................................................................433 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE......................................................................434 E-1 THE ENGINE DOES NOT START (THE ENGINE DOES NOT CRANK)...........................................................435 E-2 THE ENGINE STOPS WHILE IT IS RUNNING............................................................................438 E-3 THE ENGINE ROTATION IS UNSTABLE (THE ENGINE HUNTS)..............................................................439 E-4 THE ENGINE DOES NOT STOP........................................................................................441 E-5 THE WHOLE WORK EQUIPMENT STOPS SUDDENLY.........................................................................443 E-6 THE AUTOMATIC WARM-UP FUNCTION DOES NOT WORK....................................................................444 E-7 THE ENGINE PREHEATER DOES NOT OPERATE...........................................................................445 E-8 THE RED MARK OF EMERGENCY STOP IS INDICATED JUST AFTER THE ENGINE IS STARTED....................................447 E-9 THE MONITOR PANEL DOES NOT DISPLAY ANY ITEM.....................................................................449 E-10 SOME ITEMS ARE NOT DISPLAYED ON THE MONITOR PANEL..............................................................450 E-11 THE FUEL LEVEL MONITOR LIGHTS RED WHILE THE ENGINE IS RUNNING..................................................451 E-12 THE ENGINE COOLANT TEMPERATURE GAUGE DOES NOT DISPLAY NORMALLY.................................................452 E-13 THE FUEL LEVEL GAUGE DOES NOT DIAPLAY NORMALLY.................................................................453 E-14 THE HYDRAULIC OIL TEMPERATURE GAUGE DOES NOT DISPLAY NORMALLY..................................................454 E-15 THE TRAVEL, WORK, AND INSPECTION MODES DO NOT CHANGE...........................................................455 E-16 THE CRUSHER CLEARANCE ADJUSTMENT MODE DOES NOT CHANGE..........................................................457 E-17 THE CRUSHER ROTATION DIRECTION DOES NOT CHANGE.................................................................459 E-18 TRAVEL CANNOT BE CONTROLLED BY RADIO CONTROL...................................................................460 E-19 THE FEEDER ANNOT BE TURNED ON AND OFF BY RADIO CONTROL.........................................................463 E-20 THE CRUSHER CANNOT BE TURNED ON AND OFF BY RADIO CONTROL.......................................................465 E-21 THE MONITOR SWITCHES DO NOT WORK...............................................................................467 E-22 THE CRUSHER CANNOT BE OPERATED WITH THE CRUSHER MANUAL FORWARD/REVERSE SWITCH ON THE MONITOR...................468 E-23 THE CONVEYOR CANNOT BE OPERATED WITH THE CONVEYOR MANUAL FORWARD/REVERSE SWITCH ON THE MONITOR.................469 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEMS (H-MODE)............................................................470 SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEMS...................................................................471 INFORMATION CONTAINED IN TROUBLESHOOTING TABLE......................................................................473 H-1 THE SPEED OR POWER OF THE WHOLE WORK EQUIPMENT AND TRAVEL IS LOW................................................474 H-2 THE ENGINE SPEED LOWERS EXTREMELY OR THE ENGINE STALLS..........................................................476 H-3 THE WORK EQUIPMENT AND TRAVEL SYSTEMS DO NOT WORK...............................................................477 H-4 ABNORMAL SOUND COMES OUT FROM AROUND THE HYDRAULIC PUMP.........................................................477 H-5 FINE CONTROL PERFORMANCE OR RESPONSE IS LOW.....................................................................478 H-6 THE CONVEYOR DOES NOT OPERATE...................................................................................479 H-7 THE SPEED OR POWER OF THE CONVEYOR IS LOW.......................................................................480 H-8 THE CRUSHER DOES NOT OPERATE....................................................................................480 H-9 THE SPEED OR POWER OF CRUSHER IS LOW............................................................................481 H-10 THE FEEDER DOES NOT OPERATE....................................................................................481 H-11 THE FEEDER DOES NOT FEED SMOOTHLY (VIBRATION FREQUENCY IS LOW).................................................482 H-12 THE MAGNETIC SEPARATOR DOES NOT OPERATE........................................................................482 H-13 THE SPEED OF MAGNETIC SEPARATOR BELT IS LOW....................................................................483 H-14 THE SIDE CONVEYOR DOES NOT OPERATE.............................................................................483 H-15 THE SPEED OR POWER OF THE SIDE CONVEYOR IS LOW.................................................................484 H-16 THE PRIMARY CONVEYOR AND THE SIDE CONVEYOR DO NOT MOVE UP AND DOWN.............................................484 H-17 THE MACHINE DEVIATES DURING TRAVEL.............................................................................485 H-18 THE TRAVEL SPEED IS LOW........................................................................................486 H-19 THE MACHINE IS NOT STEERED WELL OR STEERING POWER IS LOW.......................................................487 H-20 THE TRAVEL MOTOR DOES NOT WORK (ONLY ONE SIDE).................................................................488 H-21 WHEN THE TRAVEL SWITCH OF THE RADIO CONTROLLER IS DEPRESSED, THE MACHINE DOES NOT TRAVEL.......................488 H-22 THE CRUSHER CLEARANCE CANNOT BE ADJUSTED.......................................................................489 TROUBLESHOOTING OF ENGINE (S-MODE)......................................................................................490 METHOD OF USING TROUBLESHOOTING CHARTS..............................................................................491 S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME).......................................................495 S-2 ENGINE DOES NOT START...........................................................................................497 (1) ENGINE DOES NOT TURN........................................................................................497 (2) ENGINE TURNS BUT NO EXHAUST GAS COMES OUT (FUEL IS NOT BEING INJECTED)......................................498 (3) EXHAUST GAS COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)....................................499 S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)............................................................500 S-4 ENGINE STOPS DURING OPERATIONS..................................................................................501 S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING).......................................................................502 S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)............................................................................503 S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)..................................................................504 S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE).........................................................505 S-9 OIL BECOMES CONTAMINATED QUICKLY................................................................................506 S-10 FUEL CONSUMPTION IS EXCESSIVE..................................................................................507 S-11 OIL IS IN COOLING WATER,OR WATER SPURTS BACK,OR WATER LEVEL GOES DOWN..........................................508 S-12 OIL PRESSURE LAMP LIGHTS UP (DROP IN OIL PRESSURE).............................................................509 S-13 OIL LEVEL RISES (WATER,FUEL IN OIL)............................................................................510 S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)...............................................................511 S-15 ABNORMAL NOISE IS MADE.........................................................................................512 S-16 VIBRATION IS EXCESSIVE.........................................................................................513 30 DISASSEMBLY AND ASSEMBLY.....................................................................................................514 METHOD OF USING MANUAL .....................................................................................................516 PRECAUTIONS WHEN CARRYING OUT OPERATION.....................................................................................518 DISASSEMBLY AND ASSEMBLY OF CRUSHER.........................................................................................520 DISASSEMBLY AND ASSEMBLY OF LOCK CYLINDER...................................................................................528 REMOVAL AND INSTALLATION OF PRIMARY CONVEYOR ASSEMBLY.......................................................................532 REPLACEMENT OF BELT.........................................................................................................535 REPLACEMENT PROCEDURE FOR PRIMARY BELT CONVEYOR MOTOR.......................................................................537 REPLACEMENT PROCEDURE FOR PRIMARY BELT CONVEYOR HEAD PULLEY FRAME...........................................................539 PROCEDURE FOR FOLDING ENGINE FRONT COVER....................................................................................549 90 OTHERS.......................................................................................................................552 HYDRAULIC CIRCUIT DIAGRAM (1/2).............................................................................................553 HYDRAULIC CIRCUIT DIAGRAM (2/2).............................................................................................554 ELECTRICAL CIRCUIT DIAGRAM (1/3)............................................................................................555 ELECTRICAL CIRCUIT DIAGRAM (2/3)............................................................................................556 ELECTRICAL CIRCUIT DIAGRAM (3/3)............................................................................................557
DESCRIPTION:
KOMATSU BR380JG-1 SHOP MANUAL SEBM034104 – PDF DOWNLOAD
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.
S.S 22/12/24
