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Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual SN 140F11451, 150F10293 And Up – PDF DOWNLOAD
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Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual
Book Code : WEBM004200
MACHINE MODEL SERIAL NUMBER
WB140-2 – 140F11451 and up
WB150-2 – 150F10293 and up
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Description
Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual
FILE DETAILS:
Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual
Model Specification: KOMATSU WB140-2, WB150-2
Language: English
File Format: PDF
Total Pages: 474
Requirements: Adobe PDF Reader
ZOOM IN/OUT: YES
Downloadable: YES
KOMATSU WB140-2, WB150-2 BACKHOE-LOADER SERVICE SHOP REPAIR MANUAL SN 140F11451, 150F10293 AND UP – PDF DOWNLOAD:
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual
FOREWORD:
GENERAL:
- This shop manual has been prepared as an aid to improve the quality of repairs by giving the servicemen 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.
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” to “Causes” are also included in thissection.
DISASSEMBLY AND ASSEMBLY:
This section explains the order to be followed when removing, installing, disassembling or assembling each component, as well as precautions to be taken for these operations.
MAINTENANCE STANDARD :
This section gives the judgement standards when inspecting disassembled parts.
TABLE OF CONTENTS:
Komatsu WB140-2, WB150-2 Backhoe-Loader Service Shop Repair Manual
MAIN MENU................................................................................ 0 COVER.................................................................................... 1 CONTENTS................................................................................. 3 SAFETY................................................................................... 7 FOREWORD................................................................................. 9 HOW TO READ THE SHOP MANUAL.............................................................. 11 HOISTING INSTRUCTIONS.................................................................... 11 STANDARD TIGHTENING TORQUE............................................................... 12 COATING MATERIALS........................................................................ 14 ELECTRIC................................................................................. 15 WEIGHT TABLE............................................................................. 16 TABLE OF OIL AND COOLANT QUANTITIES...................................................... 17 CONVERSION TABLE......................................................................... 19 10 STRUCTURE AND FUNCTION................................................................ 29 POWER TRAIN.......................................................................... 30 TRANSMISSION......................................................................... 32 DRIVE SHAFTS......................................................................... 37 CONTROL VALVE BLOCK.................................................................. 39 FRONT AXLE........................................................................... 40 REAR AXLE............................................................................ 43 HYDRAULIC PUMP....................................................................... 48 STEERING UNIT........................................................................ 69 HYDRAULIC CIRCUIT (WB140-2).......................................................... 71 HYDRAULIC CIRCUIT (WB150-2).......................................................... 72 SHOVEL CONTROL VALVE................................................................. 74 BACKHOE CONTROL VALVE................................................................ 78 CLSS................................................................................. 85 SOLENOID VALVE....................................................................... 99 SAFETY VALVE.........................................................................100 BRAKE PUMP...........................................................................102 SHOVEL CYLINDER......................................................................103 BACKHOE CYLINDER.....................................................................104 AIR-CONDITIONING UNIT................................................................107 HOW THE AIR-CONDITIONING UNIT FUNCTIONS..............................................108 ELECTRICAL DIAGRAM...................................................................109 ELECTRICAL DIAGRAM (AIR CONDITIONING)................................................111 20 TESTING AND ADJUSTMENTS...............................................................115 NORMAL OR STANDARD TECHNICAL DATA....................................................122 SPECIAL TOOLS........................................................................140 MEASURING ENGINE SPEED...............................................................141 ADJUSTING VALVE CLEARANCE............................................................142 MEASURING COMPRESSION PRESSURE.......................................................143 TESTING AND ADJUSTING FUEL INJECTION TIMING..........................................144 CHECKING AND TIGHTENING THE FAN -BELT................................................146 CHECKING AND TIGHTENING THE COMPRESSOR FAN -BELT.....................................147 MEASURING ACCELERATOR PEDAL OPERATING TRAVEL AND ACCELERATOR LEVER..................148 ADJUSTING BRAKE PEDAL TRAVEL, BRAKE ALIGNMENT, MICROSWITCHES.........................150 AIR BLEEDING - RELEASING RESIDUAL PRESSURE...........................................151 CHECKING AND SETTING PRESSURE IN THE ATTACHMENTS HYDRAULIC CIRCUIT...................154 TESTING AND ADJUSTING OF LOAD SENSING SIGNAL (LS VALVE)..............................160 TESTING AND ADJUSTING OF UNLOADING VALVE.............................................161 CHECKING UNLOADING VALVE FUNCTIONALITY...............................................162 TESTING PRIORITY VALVE OPERATION.....................................................163 TESTING AND SETTING STEERING CONTROL SYSTEM PRESSURE.................................164 TESTING BRAKE SYSTEM.................................................................165 CONTROL OF THE ENGINE SPEED UNDER LOAD...............................................167 TESTING PRESSURES IN THE POWE TRAIN GROUP............................................169 TESTING THE CORRECT FUNCTIONING OF THE POWER TRAIN CLUTCHES..........................171 ADJUSTING THE SENSOR FOR RETURN TO DIG DEVICE........................................172 ANALYSIS OF CAUSES HYDRAULIC DRIFT...................................................173 TESTING THE AIR -CONDITIONING UNIT...................................................178 EMPTYING THE AIR-CONDITIONING UNIT...................................................180 TROUBLESHOOTING......................................................................181 FRONT AXLE TROUBLESHOOTING.......................................................182 REAR AXLE TROUBLESHOOTING........................................................187 TRANSMISSION TROUBLESHOOTING.....................................................192 30 REMOVAL AND INSTALLATION..............................................................197 HOW TO READ THE MANUAL...............................................................199 PRECAUTIONS TO BE TAKEN WHILE WORKING................................................200 SPECIAL TOOLS........................................................................201 STARTING MOTOR.......................................................................205 REMOVAL AND INSTALLATION.........................................................205 ALTERNATOR...........................................................................206 REMOVAL..........................................................................206 INSTALLATION.....................................................................207 AIR-CONDITIONING UNIT COMPRESSOR.....................................................208 REMOVAL..........................................................................208 INSTALLATION.....................................................................209 INJECTION PUMP.......................................................................210 REMOVAL..........................................................................210 INSTALLATION.....................................................................213 INJECTION NOZZLES....................................................................214 REMOVAL AND INSTALLATION.........................................................214 THERMOSTAT...........................................................................215 REMOVAL AND INSTALLATION.........................................................215 COOLING LIQUID PUMP..................................................................216 REMOVAL..........................................................................216 INSTALLATION.....................................................................217 TURBOCOMPRESSOR......................................................................218 REMOVAL..........................................................................218 INSTALLATION.....................................................................219 CYLINDER HEAD........................................................................220 REMOVAL..........................................................................220 INSTALLATION.....................................................................222 ACCUMULATOR DISCONNECTING SWITCH.....................................................224 REMOVAL AND INSTALLATION.........................................................224 FRONT COUNTERWEIGHT..................................................................225 REMOVAL AND INSTALLATION.........................................................225 RADIATOR-OIL COOLER UNIT.............................................................226 REMOVAL..........................................................................226 INSTALLATION.....................................................................228 CONDENSER............................................................................229 REMOVAL AND INSTALLATION.........................................................229 HYDRAULIC OIL COOLER.................................................................230 REMOVAL..........................................................................230 INSTALLATION.....................................................................231 TRANSMISSION OIL COOLER..............................................................232 REMOVAL AND INSTALLATION.........................................................232 MUFFLER..............................................................................233 REMOVAL AND INSTALLATION.........................................................233 EXHAUST PIPE.........................................................................234 REMOVAL AND INSTALLATION.........................................................234 ENGINE HOOD..........................................................................235 REMOVAL..........................................................................235 INSTALLATION.....................................................................236 CAB..................................................................................237 REMOVAL..........................................................................237 INSTALLATION.....................................................................240 HEAT AND AIR-CONDITIONING GROUP......................................................241 REMOVAL..........................................................................241 INSTALLATION.....................................................................242 FUEL TANK............................................................................243 REMOVAL AND INSTALLATION.........................................................243 HYDRAULIC OIL TANK...................................................................244 REMOVAL AND INSTALLATION.........................................................244 ENGINE-GEARBOX-PUMP GROUP............................................................245 REMOVAL..........................................................................245 INSTALLATION.....................................................................250 PISTON PUMP..........................................................................251 REMOVAL..........................................................................251 INSTALLATION.....................................................................252 TRANSMISSION.........................................................................253 REMOVAL..........................................................................253 INSTALLATION.....................................................................256 DISASSEMBLY AND ASSEMBLY.........................................................257 CONVERTOR............................................................................335 REMOVAL AND INSTALLATION.........................................................335 TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP....336 REMOVAL AND INSTALLATION.........................................................336 STEERING UNIT........................................................................337 REMOVAL AND INSTALLATION.........................................................337 WORKING BRAKE PUMP GROUP.............................................................338 REMOVAL AND INSTALLATION.........................................................338 FRONT WORKING EQUIPMENT CONTROL VALVE................................................339 REMOVAL AND INSTALLATION.........................................................339 FRONT AXLE...........................................................................340 REMOVAL..........................................................................340 INSTALLATION.....................................................................341 DISASSEMBLY......................................................................342 ASSEMBLY.........................................................................351 REAR AXLE............................................................................367 REMOVAL..........................................................................367 INSTALLATION.....................................................................368 DISASSEMBLY......................................................................369 ASSEMBLY.........................................................................384 FRONT BUCKET BOOM-RAISING CYLINDER...................................................403 REMOVAL AND INSTALLATION.........................................................403 FRONT BUCKET TILT CYLINDERS..........................................................404 REMOVAL AND INSTALLATION.........................................................404 FRONT BUCKET.........................................................................405 REMOVAL AND INSTALLATION.........................................................405 FRONT WORKING EQUIPMENT..............................................................406 REMOVAL..........................................................................406 INSTALLATION.....................................................................407 BACKHOE CONTROL VALVE................................................................408 REMOVAL..........................................................................408 INSTALLATION.....................................................................409 BACKHOE BOOM CYLINDER................................................................410 REMOVAL AND INSTALLATION.........................................................410 BACKHOE ARM CYLINDER.................................................................411 REMOVAL AND INSTALLATION.........................................................411 TELESCOPIC ARM CYLINDER..............................................................412 REMOVAL AND INSTALLATION.........................................................412 BACKHOE BUCKET CYLINDER..............................................................413 REMOVAL AND INSTALLATION.........................................................413 OUTRIGGER CYLINDERS..................................................................414 REMOVAL AND INSTALLATION.........................................................414 BACKHOE SWING CYLINDERS..............................................................415 REMOVAL AND INSTALLATION.........................................................415 CYLINDERS............................................................................416 DISASSEMBLY......................................................................416 ASSEMBLY.........................................................................418 BOOM SWING CYLINDER..................................................................421 DISASSEMBLY......................................................................421 ASSEMBLY.........................................................................422 BOOM SAFETY CYLINDER.................................................................424 REMOVAL AND INSTALLATION.........................................................424 BACKHOE WORKING EQUIPMENT............................................................425 REMOVAL AND INSTALLATION.........................................................425 BACKHOE BUCKET.......................................................................426 REMOVAL AND INSTALLATION.........................................................426 ARM..................................................................................427 REMOVAL AND INSTALLATION.........................................................427 TELESCOPIC ARM.......................................................................428 REMOVAL AND INSTALLATION.........................................................428 2nd ARM..............................................................................429 REMOVAL AND INSTALLATION.........................................................429 2nd ARM GUIDES.......................................................................430 REMOVAL AND INSTALLATION.........................................................430 BACKHOE BOOM.........................................................................431 REMOVAL AND INSTALLATION.........................................................431 BACKHOE SWING BRACKET................................................................432 REMOVAL AND INSTALLATION.........................................................432 BACKHOE OUTRIGGERS...................................................................433 REMOVAL..........................................................................433 INSTALLATION.....................................................................434 40 STANDARD MAINTENANCE..................................................................437 TRANSMISSION.........................................................................438 FRONT AXLE...........................................................................443 REAR AXLE............................................................................446 HYDRAULIC PUMP.......................................................................450 2-SPOOL CONTROL VALVE................................................................452 3-SPOOL CONTROL VALVE................................................................454 6-SPOOL CONTROL VALVE................................................................456 7-SPOOL CONTROL VALVE................................................................459 8-SPOOL CONTROL VALVE................................................................461 BRAKE PUMP...........................................................................462 SHOVEL CYLINDERS.....................................................................463 BACKHOE CYLINDERS....................................................................464 FRONT WORKING EQUIPMENT..............................................................468 SWING BRACKET........................................................................470 BACKHOE WORKING EQUIPMENT............................................................472
PLEASE NOTE:
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