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Komatsu D41E-6, D41P-6 Crawler Bulldozer Shop Manual B40001 and up – PDF DOWNLOAD
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Komatsu D41E-6, D41P-6 Crawler Bulldozer Shop Manual
Book Code: SEBM028803
MACHINE MODEL SERIAL NUMBER
D41E-6 B40001 and up
D41P-6 B40001 and up
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Description
Komatsu D41E-6, D41P-6 Crawler Bulldozer Shop Manual
FILE DETAILS:
Komatsu D41E-6, D41P-6 Crawler Bulldozer Shop Manual
Brands: Komatsu
Equipment Type: Crawler Bulldozer
Manuals Type: Shop Manual
Machine Model: D41E-6, D41P-6
Serial Number: B40001 and up
Book Code: SEBM028803
Language: English
Pages: 607
File Format: Portable Document Format (PDF)
KOMATSU D41E-6, D41P-6 CRAWLER BULLDOZER SHOP MANUAL B40001 AND UP – PDF DOWNLOAD:
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
Komatsu D41E-6, D41P-6 Crawler Bulldozer 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 D41E-6, D41P-6 Crawler Bulldozer Shop Manual
MAIN MENU................................................................................................................... 0 COVER....................................................................................................................... 1 CONTENTS.................................................................................................................... 2 SAFETY...................................................................................................................... 7 SAFETY NOTICE........................................................................................................... 7 FOREWARD.................................................................................................................... 9 GENERAL................................................................................................................. 9 HOW TO READ THE SHOP MANUAL............................................................................................. 10 HOISTING INSTRUCTIONS................................................................................................... 11 METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER.............................................................. 12 COATING MATERIALS....................................................................................................... 14 STANDARD TIGHTENING TORQUE.............................................................................................. 16 ELECTRIC WIRE CODE...................................................................................................... 19 CONVERSION TABLE........................................................................................................ 20 UNITS................................................................................................................... 26 01 GENERAL.................................................................................................................. 27 SPECIFICATION DRAWING................................................................................................... 28 SPECIFICATIONS.......................................................................................................... 30 WEIGHT TABLE............................................................................................................ 34 TABLE OF FUEL, COOLANT AND LUBRICANTS................................................................................... 36 10 STRUCTURE AND FUNCTION................................................................................................... 39 RADIATOR, OIL COOLER.................................................................................................... 40 ENGINE CONTROL.......................................................................................................... 42 POWER TRAIN............................................................................................................. 44 POWER TRAIN SYSTEM...................................................................................................... 45 POWER TRAIN HYDRAULIC PIPING DRAWING.................................................................................... 46 DAMPER, UNIVERSAL JOINT................................................................................................. 47 TRANSMISSION CONTROL.................................................................................................... 48 TRANSMISSION............................................................................................................ 50 TRANSMISSION CONTROL VALVE.............................................................................................. 59 STEERING, BRAKE, INCHING CONTROL........................................................................................ 68 BEVEL GEAR SHAFT, STEERING CLUTCH, STEERING BRAKE....................................................................... 70 STEERING PPC VALVE...................................................................................................... 80 STEERING PISTON......................................................................................................... 84 PRIORITY VALVE.......................................................................................................... 85 BRAKE VALVE............................................................................................................. 87 POWER TRAIN OIL FILTER.................................................................................................. 91 FINAL DRIVE............................................................................................................. 92 FRAME ASSEMBLY.......................................................................................................... 94 TRACK FRAME............................................................................................................. 95 RECOIL SPRING........................................................................................................... 96 WORK EQUIPMENT HYDRAULIC PIPING DIAGRAM................................................................................. 97 WORK EQUIPMENT CONTROL.................................................................................................. 98 HYDRAULIC TANK, FILTER..................................................................................................100 MAIN CONTROL VALVE......................................................................................................102 CLSS....................................................................................................................113 COOLING FAN DRIVE MOTOR.................................................................................................126 FAN CONTROLLER..........................................................................................................133 WORK EQUIPMENT..........................................................................................................134 AIR CONDITIONER.........................................................................................................135 ENGINE CONTROL SYSTEM...................................................................................................136 MACHINE MONITOR SYSTEM..................................................................................................137 COOLING FAN CONTROL SYSTEM..............................................................................................141 SENSORS.................................................................................................................145 20 TESTING AND ADJUSTING....................................................................................................148 STANDARD VALUE TABLE FOR ENGINE RELATED PARTS...........................................................................149 STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS..........................................................................150 STANDARD VALUE TABLE FOR MACHINE MONITOR................................................................................153 TESTING AND ADJUSTING...................................................................................................156 TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING....................................................................157 ADJUSTING VALVE CLEARANCE...........................................................................................158 MEASURING BLOW-BY...................................................................................................159 TESTING AND ADJUSTING FUEL INJECTION TIMING.........................................................................160 MEASURING EXHAUST COLOR.............................................................................................161 MEASURING ENGINE OIL PRESSURE.......................................................................................162 MEASUREMENT OF ENGINE SPEED.........................................................................................163 ADJUSTING FUEL CONTROL LINKAGE......................................................................................164 ADJUSTING DECELERATOR PEDAL LINKAGE.................................................................................165 ADJUSTING STEERING, DIRECTIONAL, GEAR SHIFT LEVER...................................................................167 TESTING MAIN BRAKE AND PARKING BRAKE................................................................................169 TESTING WEAR OF BRAKE LINING AND CLUTCH LINING......................................................................171 ADJUSTING BRAKE, CLUTCH LEVER ASSEMBLY AND LINING CLEARANCE.........................................................172 ADJUSTING BRAKE PEDAL LINKAGE.......................................................................................176 ADJUSTING INCHING PEDAL LINKAGE.....................................................................................177 ADJUSTING PARKING BRAKE LINKAGE.....................................................................................178 ADJUSTING WORK EQUIPMENT CONTROL LINKAGE AND SAFETY LEVER LINKAGE...................................................180 MEASURING POWER TRAIN OIL PRESSURE..................................................................................181 TESTING AND ADJUSTING WORK EQUIPMENT CIRCUIT PRESSURE...............................................................185 MEASURING AND ADJUSTING FAN MOTOR SPEED AND DRIVE CIRCUIT OIL PRESURE...............................................186 MEASURING FAN SPEED.................................................................................................187 TESTING AND ADJUSTING TRACK SHOE TENSION............................................................................188 MEASURING LEAKAGE INSIDE CYLINDER...................................................................................189 BLEEDING AIR FROM HYDRAULIC CYLINDER................................................................................190 PROCEDURE FOR RELEASING PARKING BRAKE...............................................................................191 TESTING AND ADJUSTING "OPEN" AND "CLOSE" LOCK AND STEADY REST OF OPERATOR'S CAB DOOR................................192 TROUBLESHOOTING.........................................................................................................198 POINTS TO REMEMBER WHEN TROUBLESHOOTING.............................................................................199 SEQUENCE OF EVENTS IN TROUBLESHOOTING...............................................................................200 POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE....................................................................201 CHECKS BEFORE TROUBLESHOOTING.......................................................................................209 METHOD OF USING TROUBLESHOOTING CHARTS..............................................................................210 TYPES AND LOCATIONS OF CONNECTORS...................................................................................212 CONNECTION TABLE FOR CONNECTOR PIN NUMBERS..........................................................................224 TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)...........................................................................250 METHOD OF USING TROUBLESHOOTING CHARTS..........................................................................251 S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)...................................................255 S-2 ENGINE DOES NOT START.......................................................................................257 1) ENGINE TURNS BUT NO EXHAUST SMOKE COMES OUT (FUEL IS NOT BEING INJECTED).................................257 2) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)...............................258 S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW UP IS POOR)........................................................259 S-4 ENGINE STOPS DURING OPERATIONS..............................................................................260 S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)...................................................................261 S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)........................................................................262 S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)..............................................................263 S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE).....................................................264 S-9 OIL BECOMES CONTAMINATED QUICKLY............................................................................265 S-10 FUEL CONSUMPTION IS EXCESSIVE..............................................................................266 S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN....................................267 S-12 OIL PRESSURE CAUTION LAMP LIGHTS UP (DROP IN OIL PRESSURE).................................................268 S-13 OIL LEVEL RISES (WATER, FUEL IN OIL).......................................................................269 S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)...........................................................270 S-15 ABNORMAL NOISE IS MADE.....................................................................................271 S-16 VIBRATION IS EXCESSIVE.....................................................................................272 TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE).......................................................................274 TABLE OF FAILURE MODES AND CAUSES (ELECTRIC SYSTEM).............................................................275 ELECTRICAL CIRCUIT DIAGRAMS FOR EACH SYSTEM.....................................................................278 E-1 STARTING MOTOR IS NOT CRANKED WHEN STARTING SWITCH IS TURNED TO ON..........................................283 E-2 ENGINE DOES NOT START (ENGINE STOP SOLENOID MALFUNCTIONS)...................................................285 E-3 LAMPS DO NOT LIGHT UP.......................................................................................288 a) HEAD LAMP................................................................................................288 b) REAR LAMP................................................................................................289 E-4 AUTOMATIC PREHEATING IS NOT CARRIED OUT WHEN GLOW SWITCH IS TURNED TO AUTO..................................291 E-5 WIPER DOES NOT OPERATE......................................................................................293 E-6 NO WASHER FLUID IS SPRAYED OUT..............................................................................297 E-7 AIR CONDITIONER HAS NO EFFECT...............................................................................299 a) NO AIR COMES OUT.........................................................................................299 b) DOES NOT BECOME COOL.....................................................................................303 E-8 FAN MALFUNCTIONS............................................................................................307 a) FORWARD FAN SPEED IS LOW.................................................................................307 b) FORWARD FAN SPEED DOES NOT LOWER FROM MAXIMUM LEVEL (WHEN WATER TEMPERATURE IS BELOW 85 degrees C).......307 c) FAN DOES NOT REVOLVE IN REVERSE..........................................................................309 TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)............................................................312 TABLE OF FAILURE MODES AND CAUSES (HYDRAULIC, MECHANICAL SYSTEM)................................................313 H-1 BRAKES DO NOT WORK..........................................................................................315 a) WHEN INCHING PEDAL IS OPERATED...........................................................................315 b) WHEN PARKING BRAKE LEVER IS AT LOCK......................................................................316 H-2 MACHINE DOES NOT TURN (CAN TRAVEL IN A STRAIGHT LINE).......................................................317 H-3 OVERRUNS WHEN TURNING.......................................................................................318 H-4 CAN TURN IN ONLY ONE DIRECTION (WHEN STEERING AND DIRECTIONAL LEVER IS OPERATED)............................319 H-5 MACHINE DOES NOT MOVE OFF IN ANY SPEED RANGE................................................................320 H-6 EXCESSIVE TIME LAG..........................................................................................321 H-7 MACHINE CAN TRAVEL IN ONLY ONE DIRECTION (FORWARD OR REVERSE)...............................................321 H-8 MACHINE DOES NOT MOVE (WHEN ENGINE IS STARTED AND LEVER IS SHIFTED TO 2ND OR 3RD)...........................322 H-9 POWER TRAIN OIL TEMPERATURE RISES TOO HIGH..................................................................323 H-10 LACKS DRAWBAR PULL, TRAVEL SPEED IS SLOW...................................................................324 H-11 ABNORMAL NOISE IS GENERATED FROM AROUND TANDEM PUMP........................................................325 H-12 NO WORK EQUIPMENT MOVES....................................................................................326 H-13 SPEED OF ALL WORK EQUIPMENT IS SLOW OR LACKS POWER.........................................................326 H-14 BLADE LIFT SPEED OR TILT SPEED IS SLOW OR LACKS POWER......................................................327 H-15 BLADE ANGLE SPEED IS SLOW OR LACKS POWER...................................................................328 H-16 HYDRAULIC DRIFT OF BLADE LIFT, BLADE TILT IS EXCESSIVE.....................................................329 H-17 HYDRAULIC DRIFT OF BLADE ANGLE IS EXCESSIVE................................................................329 H-18 FAN SPEED IS LOW...........................................................................................330 TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE)..................................................................332 TABLE OF FAILURE MODES AND CAUSES (MACHINE MONITOR SYSTEM)......................................................333 ELECTRICAL CIRCUIT DIAGRAMS FOR EACH SYSTEM.....................................................................335 M-1 NO DISPLAY IS GIVEN ON MONITOR PANEL WHEN STARTING SWITCH IS TURNED TO ON...................................336 M-2 WHEN STARTING SWITCH IS TURNED TO ON, ALL MONITOR PANEL LAMPS LIGHT UP AND DO NOT GO OUT....................336 M-3 PREHEATING DISPLAY IS ABNORMAL..............................................................................337 a) PREHEATING MONITOR DOES NOT LIGHT UP.....................................................................337 b) PREHEATING MONITOR STAYS LIGHTED UP......................................................................337 M-4 CAUTION ITEMS LIGHT UP OR FLASH.............................................................................339 a) (CHARGE) LIGHTS UP OR FLASHES............................................................................339 b) WHEN STARTING SWITCH IS TURNED TO ON AND ENGINE IS STARTED (ENGINE OIL PRESSURE) LIGHTS UP OR FLASHES....340 c) (COOLANT TEMPERATURE) FLASHES............................................................................341 d) (POWER TRAIN OIL TEMPERATURE) FLASHES....................................................................342 M-5 BUZZER IS ABNORMAL..........................................................................................343 a) CAUTION ITEM FLASHES BUT BUZZER DOES NOT SOUND...........................................................343 b) MONITOR DISPLAY IS NORMAL, BUT BUZZER SOUNDS.............................................................343 M-6 WARNING LAMP IS ABNORMAL....................................................................................344 a) CAUTION ITEM IS FLASHING BUT LAMP DOES NOT FLASH.........................................................344 b) MONITOR DISPLAY IS NORMAL BUT LAMP FLASHES...............................................................344 M-7 GAUGE IS ABNORMAL...........................................................................................345 a) ABNORMALITY IN ENGINE COOLANT TEMPERATURE GAUGE..........................................................345 b) ABNORMALITY IN POWER TRAIN OIL TEMPERATURE GAUGE.........................................................346 c) ABNORMALITY IN FUEL LEVEL GAUGE..........................................................................347 M-8 SERVICE METER DOES NOT MOVE AFTER ENGINE IS STARTED.........................................................348 M-9 MONITOR PANEL LIGHTING DOES NOT LIGHT UP (FRONT LAMPS ARE NORMAL)...........................................349 30 DISASSEMBLY AND ASSEMBLY.................................................................................................351 METHOD OF USING MANUAL..................................................................................................353 PRECAUTIONS WHEN CARRYING OUT OPERATION.................................................................................354 SPECIAL TOOL LIST.......................................................................................................356 SKETCHES OF SPECIAL TOOLS...............................................................................................362 FUEL INJECTION PUMP ASSEMBLY............................................................................................364 REMOVAL.............................................................................................................364 INSTALLATION........................................................................................................366 ENGINE HOOD ASSEMBLY....................................................................................................368 REMOVAL.............................................................................................................368 INSTALLATION........................................................................................................369 CYLINDER HEAD ASSEMBLY..................................................................................................370 REMOVAL.............................................................................................................370 INSTALLATION........................................................................................................373 FUEL TANK ASSEMBLY......................................................................................................375 REMOVAL.............................................................................................................375 INSTALLATION........................................................................................................376 RADIATOR AND OIL COOLER ASSEMBLY........................................................................................377 REMOVAL.............................................................................................................377 INSTALLATION........................................................................................................377 FAN DRIVE PUMP ASSEMBLY.................................................................................................378 REMOVAL.............................................................................................................378 INSTALLATION........................................................................................................378 FAN MOTOR ASSEMBLY......................................................................................................379 REMOVAL.............................................................................................................379 INSTALLATION........................................................................................................379 ENGINE ASSEMBLY.........................................................................................................380 REMOVAL.............................................................................................................380 INSTALLATION........................................................................................................383 RADIATOR AND RADIATOR GUARD ASSEMBLY....................................................................................384 REMOVAL.............................................................................................................384 INSTALLATION........................................................................................................386 DAMPER ASSEMBLY.........................................................................................................387 REMOVAL.............................................................................................................387 INSTALLATION........................................................................................................388 TRANSMISSION ASSEMBLY...................................................................................................390 REMOVAL.............................................................................................................390 INSTALLATION........................................................................................................393 PTO ASSEMBLY............................................................................................................394 DISASSEMBLY.........................................................................................................394 ASSEMBLY............................................................................................................395 TRANSMISSION ASSEMBLY...................................................................................................397 DISASSEMBLY.........................................................................................................397 ASSEMBLY............................................................................................................409 STEERING CASE ASSEMBLY..................................................................................................423 DISASSEMBLY.........................................................................................................423 ASSEMBLY............................................................................................................429 FINAL DRIVE ASSEMBLY....................................................................................................438 REMOVAL.............................................................................................................438 INSTALLATION........................................................................................................438 DISASSEMBLY.........................................................................................................439 ASSEMBLY............................................................................................................443 IDLER ASSEMBLY..........................................................................................................448 REMOVAL.............................................................................................................448 INSTALLATION........................................................................................................448 RECOIL SPRING ASSEMBLY..................................................................................................449 DISASSEMBLY.........................................................................................................449 ASSEMBLY............................................................................................................450 IDLER ASSEMBLY..........................................................................................................451 DISASSEMBLY.........................................................................................................451 ASSEMBLY............................................................................................................452 TRACK ROLLER ASSEMBLY...................................................................................................455 DISASSEMBLY.........................................................................................................455 ASSEMBLY............................................................................................................457 CARRIER ROLLER ASSEMBLY.................................................................................................459 DISASSEMBLY.........................................................................................................459 ASSEMBLY............................................................................................................460 TRACK SHOE ASSEMBLY.....................................................................................................462 REMOVAL.............................................................................................................462 INSTALLATION........................................................................................................463 OVERALL DISASSEMBLY.................................................................................................464 OVERALL ASSEMBLY....................................................................................................469 PRESS-FITTING JIG DIMENSION TABLE FOR LINK PRESS........................................................................483 ONE LINK................................................................................................................484 FIELD DISASSEMBLY...................................................................................................484 FIELD ASSEMBLY......................................................................................................486 MAIN CONTROL VALVE......................................................................................................493 ASSEMBLY............................................................................................................493 HYDRAULIC CYLINDER ASSEMBLY.............................................................................................499 DISASSEMBLY.........................................................................................................499 ASSEMBLY............................................................................................................501 WORK EQUIPMENT..........................................................................................................503 REMOVAL.............................................................................................................503 INSTALLATION........................................................................................................504 DISASSEMBLY.........................................................................................................505 ASSEMBLY............................................................................................................508 HYDRAULIC TANK ASSEMBLY.................................................................................................511 REMOVAL.............................................................................................................511 INSTALLATION........................................................................................................511 ROPS ROOF, GUARD........................................................................................................512 REMOVAL.............................................................................................................512 INSTALLATION........................................................................................................512 ROPS ASSEMBLY...........................................................................................................513 REMOVAL.............................................................................................................513 INSTALLATION........................................................................................................513 OPERATOR'S CAB ASSEMBLY.................................................................................................514 REMOVAL.............................................................................................................514 INSTALLATION........................................................................................................516 FLOOR FRAME ASSEMBLY....................................................................................................522 REMOVAL.............................................................................................................522 INSTALLATION........................................................................................................526 40 MAINTENANCE STANDARD.....................................................................................................538 DAMPER, UNIVERSAL JOINT.................................................................................................539 HYDRAULIC+POWER TRAIN PUMP..............................................................................................540 TRANSMISSION............................................................................................................542 TRANSMISSION CONTROL VALVE..............................................................................................548 BEVEL GEAR SHAFT, STEERING CLUTCH, STEERING BRAKE.......................................................................553 STEERING PPC VALVE......................................................................................................555 STEERING PISTON.........................................................................................................556 PRIORITY VALVE..........................................................................................................557 BRAKE VALVE.............................................................................................................558 PARKING BRAKE CYLINDER..................................................................................................559 FINAL DRIVE.............................................................................................................561 DIMENSIONS OF SHAPE OF SPROCKET TOOTH (ACTUAL SIZE).....................................................................563 TRACK FRAME, RECOIL SPRING..............................................................................................564 IDLER...................................................................................................................565 TRACK ROLLER............................................................................................................567 CARRIER ROLLER..........................................................................................................568 TRACK SHOE..............................................................................................................569 MAIN CONTROL VALVE......................................................................................................575 COOLING FAN DRIVE PUMP..................................................................................................586 COOLING FAN DRIVE MOTOR.................................................................................................587 WORK EQUIPMENT CYLINDER.................................................................................................589 WORK EQUIPMENT..........................................................................................................591 90 OTHERS...................................................................................................................594 POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM...................................................................................595 WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM................................................................................596 ELECTRICAL CIRCUIT DIAGRAM WITH CAB (1/2)...............................................................................597 ELECTRICAL CIRCUIT DIAGRAM WITH CAB (2/2)...............................................................................599 ELECTRICAL CIRCUIT DIAGRAM WITHOUT CAB (1/2)............................................................................601 ELECTRICAL CIRCUIT DIAGRAM WITHOUT CAB (2/2)............................................................................603 CAB ELECTRICAL CIRCUIT DIAGRAM..........................................................................................605
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