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Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual SN 140F11531 and up, 150F10303 and up – PDF DOWNLOAD
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Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual
Book Code: WEBM004601
SERIAL NUMBER:
- WB140-2 140F11531 and up
- WB150-2 150F10303 and up
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Description
Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual
FILE DETAILS:
Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual
Brands: Komatsu
Equipment Type: Backhoe Loader
Manuals Type: Shop Manual
Machine Model: WB140-2, WB150-2
Serial Number: 140F11531 and up, 150F10303 and up
Book Code: WEBM004601
Language: English
Pages: 486
File Format: Portable Document Format (PDF)
TABLE OF CONTENTS:
Komatsu WB140-2, WB150-2 Backhoe Loader Shop Manual
MAIN MENU................................................................................ 0 COVER.................................................................................... 1 CONTENTS................................................................................. 3 SAFETY................................................................................... 7 FOREWORD................................................................................. 9 HOW TO READ THE SHOP MANUAL.......................................................... 10 HOISTING INSTRUCTIONS................................................................ 11 STANDARD TIGHTENING TORQUE........................................................... 12 COATING MATERI ALS................................................................... 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 CYLINDERS.....................................................................103 BACKHOE CYLINDERS....................................................................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....................................................116 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 POWER 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 GROUP.......................................................................226 REMOVAL..........................................................................226 INSTALLATION.....................................................................228 CONDENSER............................................................................229 REMOVAL AND INSTALLATION.........................................................229 MUFFLER..............................................................................230 REMOVAL AND INSTALLATION.........................................................230 EXHAUST PIPE.........................................................................231 REMOVAL AND INSTALLATION.........................................................231 ENGINE HOOD..........................................................................232 REMOVAL..........................................................................232 INSTALLATION.....................................................................233 CAB..................................................................................234 REMOVAL..........................................................................234 INSTALLATION.....................................................................237 HEAT AND AIR-CONDITIONING GROUP......................................................238 REMOVAL..........................................................................238 INSTALLATION.....................................................................239 FUEL TANK............................................................................240 REMOVAL AND INSTALLATION.........................................................240 HYDRAULIC OIL TANK...................................................................241 REMOVAL AND INSTALLATION.........................................................241 ENGINE-GEARBOX-PUMP GROUP............................................................242 REMOVAL..........................................................................242 INSTALLATION.....................................................................247 PISTON PUMP..........................................................................248 REMOVAL..........................................................................248 INSTALLATION.....................................................................249 TRANSMISSION.........................................................................250 REMOVAL..........................................................................250 INSTALLATION.....................................................................253 DISASSEMBLY AND ASSEMBLY.........................................................255 CONVERTOR............................................................................333 REMOVAL AND INSTALLATION.........................................................333 TRANSMISSION-REVERSE, DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP....334 REMOVAL AND INSTALLATION.........................................................334 STEERING UNIT........................................................................335 REMOVAL AND INSTALLATION.........................................................335 WORKING BRAKE PUMP GROUP.............................................................336 REMOVAL AND INSTALLATION.........................................................336 FRONT WORKING EQUIPMENT CONTROL VALVE................................................337 REMOVAL AND INSTALLATION.........................................................337 FRONT AND BACKHOE CONTROL VALVE......................................................338 DISASSEMBLY AND ASSEMBLY.........................................................338 FRONT AXLE...........................................................................352 REMOVAL..........................................................................352 INSTALLATION.....................................................................353 DISASSEMBLY......................................................................354 ASSEMBLY.........................................................................363 REAR AXLE............................................................................379 REMOVAL..........................................................................379 INSTALLATION.....................................................................380 DISASSEMBLY......................................................................381 ASSEMBLY.........................................................................396 FRONT BUCKET BOOM-RAISING CYLINDER...................................................415 REMOVAL AND INSTALLATION.........................................................415 FRONT BUCKET TILT CYLINDERS..........................................................416 REMOVAL AND INSTALLATION.........................................................416 FRONT BUCKET.........................................................................417 REMOVAL AND INSTALLATION.........................................................417 FRONT WORKING EQUIPMENT..............................................................418 REMOVAL..........................................................................418 INSTALLATION.....................................................................419 BACKHOE CONTROL VALVE................................................................420 REMOVAL..........................................................................420 INSTALLATION.....................................................................421 BACKHOE BOOM CYLINDER................................................................422 REMOVAL AND INSTALLATION.........................................................422 BACKHOE ARM CYLINDER.................................................................423 REMOVAL AND INSTALLATION.........................................................423 TELESCOPIC ARM CYLINDER..............................................................424 REMOVAL AND INSTALLATION.........................................................424 BACKHOE BUCKET CYLINDER..............................................................425 REMOVAL AND INSTALLATION.........................................................425 OUTRIGGER CYLINDERS..................................................................426 REMOVAL AND INSTALLATION.........................................................426 BACKHOE SWING CYLINDERS..............................................................427 REMOVAL AND INSTALLATION.........................................................427 CYLINDERS............................................................................428 DISASSEMBLY......................................................................428 ASSEMBLY.........................................................................430 BOOM SWING CYLINDER..................................................................433 DISASSEMBLY......................................................................433 ASSEMBLY.........................................................................434 BOOM SAFETY CYLINDER.................................................................436 REMOVAL AND INSTALLATION.........................................................436 BACKHOE WORKING EQUIPMENT............................................................437 REMOVAL AND INSTALLATION.........................................................437 BACKHOE BUCKET.......................................................................438 REMOVAL AND INSTALLATION.........................................................438 ARM..................................................................................439 REMOVAL AND INSTALLATION.........................................................439 TELESCOPIC ARM.......................................................................440 REMOVAL AND INSTALLATION.........................................................440 2nd ARM..............................................................................441 REMOVAL AND INSTALLATION.........................................................441 2nd ARM GUIDES.......................................................................442 REMOVAL AND INSTALLATION.........................................................442 BACKHOE BOOM.........................................................................443 REMOVAL AND INSTALLATION.........................................................443 BACKHOE SWING BRACKET................................................................444 REMOVAL AND INSTALLATION.........................................................444 BACKHOE OUTRIGGERS...................................................................445 REMOVAL..........................................................................445 INSTALLATION.....................................................................446 40. STANDARD MAINTENANCE.................................................................449 TRANSMISSION.........................................................................450 FRONT AXLE...........................................................................455 REAR AXLE............................................................................458 HYDRAULIC PUMP.......................................................................462 2-SPOOL CONTROL VALVE................................................................464 3-SPOOL CONTROL VALVE................................................................466 6-SPOOL CONTROL VALVE................................................................468 7-SPOOL CONTROL VALVE................................................................471 8-SPOOL CONTROL VALVE................................................................473 BRAKE PUMP...........................................................................474 SHOVEL CYLINDERS.....................................................................475 BACKHOE CYLINDERS....................................................................476 FRONT WORKING EQUIPMENT..............................................................480 SWING BRACKET........................................................................482 BACKHOE WORKING EQUIPMENT............................................................484
KOMATSU WB140-2, WB150-2 BACKHOE LOADER SHOP MANUAL SN 140F11531 AND UP, 150F10303 AND UP – PDF DOWNLOAD:
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
Komatsu WB140-2, WB150-2 Backhoe Loader Shop 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.
PLEASE NOTE:
- This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
- You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
- Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted
