Putting a Komatsu WA65-5, WA70-5 or WA80-5 wheel loader back to factory standard is the job these 306 pages of shop manual VEBM250100 were written for. Wiring diagrams and hydraulic circuit diagrams close out this Komatsu WA65-5, WA70-5, WA80-5 shop manual PDF, so you can trace a dead circuit or a lazy lift arm back to its source. Disassembly and Assembly takes up the largest share, running from the starter, alternator and water pump through the engine, radiator and brake calipers, while Structure and Function explains the variable displacement pump and motor and Testing and Adjusting lays out standard value tables for engine and chassis. Hold charge pressure between 2.4 and 4.5 bar, and refill the cooling system with 9.1 l of 50/50 coolant rated to -34°C. Hydrostatic drive faults hide well on a loader this compact. Bookmarked, text-searchable pages help you pin down the failed component, so you order the right part the first time.
What's Inside This Komatsu WA65-5, WA70-5, WA80-5 Manual
| System | Pages | Key Topics |
|---|
| Safety | 3-18 | Safety Notice, Preparations for Work, Hoisting Instructions |
| General | 19-36 | Dimensions and Weights, Lubricants and Operating Mediums, Basic Procedures of Maintenance |
| Structure and Function | 37-128 | Powertrain, Variable Displacement Pump, Variable Displacement Motor, Steering System, Air Conditioner |
| Testing and Adjusting | 129-164 | Standard Value Table for Engine, Standard Value Table for Chassis, Test Certificate |
| Disassembly and Assembly | 165-282 | Starter Assembly, Alternator Assembly, Water Pump Assembly, Engine Assembly, Radiator Assembly, Brake Caliper |
| Others | 283-306 | Hydraulic Circuit Diagrams, Wiring Diagrams |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Filling quantity (R134a) | 1200 g | p. 118 |
| Cooling System Proportion of Mixture | 50% Coolant: 50% Water | p. 33 |
| Cooling System Min. Freeze Proofing | -34°C | p. 33 |
| Charge pressure | 2.4-4.5 bar | p. 42 |
| Coolant capacity | 9.1 l | p. 172 |
| New compressor oil fill | 180 cm³ | p. 122 |
| Water pump fastening screws (7) and (8) torque | 19 Nm | p. 174 |
| Engine Oil Capacity (Top-up) | 7.0L | p. 30 |
| Engine Oil Capacity (Total) | 7.5L | p. 30 |
| Cooling System Capacity | 9.1L | p. 30 |
| Cab Fastening Screw Torque | 230 Nm | p. 10 |
| Front Axle Mounting Torque | 800 Nm | p. 53 |
