Komatsu WB140PS-2N, WB150PS-2N Backhoe Loader Service Manual
499 pages · Publication CEBM011100
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- Models
- WB140PS-2N, WB150PS-2N
- Serial coverage
- WB140PS-2N A40001 and up, WB150PS-2N A70001 and up
- Manual type
- Service Manual
- Pages
- 499
- Publication
- CEBM011100
- Condition
- Brand new
What's inside
From the manual's own table of contents: 81 topics. See sample pages (PDF, 756 KB)
- Chassis and Engine (WB140PS-2N)
- Chassis and Engine (WB150PS-2N)
- Chassis and Engine
- Chassis
- Engine
- Machine specific
- POWER TRAIN
- TRANSMISSION
- DIAGRAM OF THE POWER TRAIN
- HYDRAULIC CONVERTER-TRANSMISSION CIRCUIT DIAGRAM
- DRIVE SHAFTS
- DRIVE SHAFT FOR FORWARD AND REVERSE MOVEMENT
- DRIVE SHAFT
- DRIVEN GEAR SHAFT
- DRIVEN SHAFT 4WD
- CONTROL VALVE BLOCK
- FRONT AXLE
- DIFFERENTIAL
- FINAL-REDUCTION-JOINT
- STEERING CYLINDER
- REAR AXLE
- FINAL REDUCTION
- BRAKES
- DIFFERENTIAL LOCKING
Show all 81 topics
- HYDRAULIC PUMP
- FUNCTION
- STRUCTURE
- OPERATION
- PUMP OPERATION
- CONTROL OF DELIVERY
- PC VALVE, LS VALVE, SERVO PISTON
- LS VALVE
- PC VALVE
- WORKING MODE SOLENOID VALVE
- STEERING UNIT
- TECHNICAL DATA
- HYDRAULIC CIRCUIT
- SHOVEL CONTROL VALVE
- 2-SPOOL
- 3-SPOOL
- BACKHOE CONTROL VALVE
- 6-SPOOL
- 7-SPOOL
- FOR TELESCOPIC ARM
- FOR HAMMER
- 8-SPOOL
- FOR HAMMER AND TELESCOPIC ARM
- CLSS (CLOSED CENTER LOAD SENSING SYSTEM)
- DESCRIPTION
- CHARACTERISTICS
- UNLOADING VALVE
- INTRODUCTION OF THE LS PRESSURE
- DELIVERY COMPENSATION
- INTRODUCTION
- LIFD CONTROL SYSTEM
- LS DECOMPRESSION VALVE
- PRESSURE CUT-OFF VALVE
- PRIORITY VALVE (ONLY FOR THE 2-3-SPOOL CONTROL VALVE)
- SOLENOID VALVE
- BOOM LOCKING
- SAFETY VALVE
- BRAKE PUMP
- SHOVEL CYLINDERS
- RAISING CYLINDER
- DUMPING CYLINDER
- DUMP CYLINDER
- RAISE CYLINDER
- BACKHOE CYLINDERS
- BOOM
- BUCKET
- OUTRIGGERS
- BOOM SWING
- TELESCOPIC ARM
- CHARACTRISTICS
- BACKHOE CYLINDER MAINTENANCE STANDARD
- OUTRIGGER
- FRONT WORKING EQUIPMENT
- SWING BRACKET
- BACKHOE WORK EQUIPMENT
- AIR-CONDITIONING UNIT
- AIR-CONDITIONING UNIT FUNCTION
Inside this manual
Real pages from this service manual (499 pages). Open the sample pages (PDF, 755 KB)
- Specifications, page 183: TESTING AND ADJUSTING
- Troubleshooting, page 204: TROUBLESHOOTING
- Diagram, page 274: PISTON PUMP
- Foldout diagram, page 489: OTHERS
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WB140PS-2N, WB150PS-2N are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
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This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 499 pages
Quantity one is the manual described above.
Fast free USA shipping
Ships in 1 business day.
60-day returns
Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy
Binder not included
Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.
Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).