Komatsu's own publication number, WEAM000904, marks this 253-page Komatsu WB140-2, WB150-2 operator manual PDF as the factory Operation and Maintenance Manual for both backhoe-loaders. Operating chapters fill more than a quarter of the book: instrument and control layouts, fuse and relay positions, loader and excavator work methods, bucket changes, cold-season precautions, and lifting capacity data for the two models. Maintenance takes up another quarter, set out as a plan running from pre-start checks through 10, 50, 250, 500, 1000 and 2000 hour intervals, with lubrication diagrams for the telescopic arm, pallet forks and quick couplings, plus separate intervals if you run a demolition hammer. Change your engine oil filter and fuel filter every 500 hours, and set rear wheel nuts to 500 ± 9.8 Nm, front to 350 ± 9.8 Nm. Invented wheel nut torques shear studs and drop wheels. Bookmarked and text-searchable, the PDF travels on your phone or laptop to wherever the machine is working.
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|
| Information on Safety | 11-12 | General Safety Rules, Safety Devices, Guards, Personal Protection Items, Unauthorized Modifications, Operator Seat, Rear-View Mirror, Fire Prevention |
| Introduction | 13-19 | Intended Uses, Improper or Unauthorized Uses, Main Characteristics, Running-In, Product Identification, Machine Serial Number, Machine Identification Plate |
| Safety and Accident Prevention | 20-46 | General Precautions, Precautions Before Starting Engine, Precautions When Working, Transporting the Machine, The Battery, Precautions for Emergency Recovery |
| Safety Plates | 47-67 | Position of the Safety Plates, Position of Pictograms, Pictograms and Relevant Meanings, Vibrations to Which the Operator Is Subjected |
| Technical Specifications | 68-77 | Technical Data (Standard Overall Dimensions, Technical Characteristics Wb140R-2, Technical Characteristics Wb150R-2, Lifting Capacities) |
| The Machine and Its Operations | 78-149 | Safety Locks (Front Loader Lock, Backhoe Locks, Front General View, Backhoe General View, Cab Inside General View) |
| Maintenance | 150-215 | Guide to Maintenance, Notes Regarding the Engine, Parts Subject to Wear That Periodically Need Changing, Lubrication Diagram, Standard Tightening Torques, Checks Before Starting, Maintenance Every 500 Hours of Operation |
| Long Periods of Inactivity | 216-219 | Before the Period of Inactivity, During the Period of Inactivity, After the Period of Inactivity |
| Authorized Optional Equipment | 220-253 | Precautions Regarding Safety, Characteristics of the Optional Equipment for Model Wb140-2, Characteristics of the Optional Equipment for Model Wb150-2 |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Engine oil filter replacement interval | EVERY 500 HOURS | p. 174 |
| Fuel filter replacement interval | EVERY 500 HOURS | p. 174 |
| Wheel nut torque (Front) | 350 ± 9.8 Nm | p. 171 |
| Wheel nut torque (Rear) | 500 ± 9.8 Nm | p. 171 |
| Front bucket teeth bolt torque | 143 ± 9.8 Nm | p. 171 |
| Backhoe bucket central teeth bolt torque | 143 ± 9.8 Nm | p. 171 |
| Hydraulic System Oil Capacity (1st filling) | 150L | p. 157 |
| Hydraulic System Oil Capacity (Change) | 92L | p. 157 |
| Front Axle Differential Oil Capacity | 6.5L | p. 157 |
| WB140-2 |
| Engine Oil Capacity (WB140-2 Aspirated) | 7.9L | p. 157 |
| Engine Oil Capacity (WB140-2 Turbocharged) | 7.9L | p. 157 |
| WB150-2 |
| Engine Oil Capacity (WB150-2 Turbocharged) | 7.9L | p. 157 |
