A WA180-3 that drags a clutch pack mid-cycle is headed for a transmission split, and the Komatsu WA180-3 shop manual PDF (SEBM005802, 549 pages) walks you through that wheel loader from General specifications to Maintenance Standard. Hydraulic schematics trace oil from the pump through the main control valve to the lift arm and bucket cylinders, and wiring diagrams map the circuits behind the transmission control valve and the 24 V, 5.5 kW starting motor. Disassembly and Assembly takes up the largest share of the book (engine, transmission, clutch packs), while Testing and Adjusting pairs troubleshooting charts with standard value tables for engine and chassis. Check the alternator against its 24 V, 35 A rating before you condemn the batteries, and bring a No. 04 hose nut to 78.5 ± 19.6 Nm. Nobody wants to split a loader twice for one clutch pack. Bookmarked and text searchable, the PDF travels to wherever your loader is parked.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| General | 1-31 | Safety, Specifications |
| Structure and Function | 32-175 | Power Train System, Transmission Control Valve, Main Control Valve |
| Testing and Adjusting | 176-277 | Standard Value Table for Engine, Standard Value Table for Chassis |
| Disassembly and Assembly | 278-495 | Engine, Transmission, Clutch Pack |
| Maintenance Standard | 496-549 | Transmission, Differential |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Tightening torque of hose nuts (Nominal No. 02) | 24.5 ± 4.9 Nm | p. 15 |
| Tightening torque of hose nuts (Nominal No. 03) | 49 ± 19.6 Nm | p. 15 |
| Starting motor | 24 V 5.5 kW | p. 27 |
| Alternator | 24 V 35 A | p. 27 |
| Filter mesh size | 10 microns | p. 43 |
| Filtering area | 8900 cm2 | p. 43 |
| Bypass valve set pressure | 0.15 MPa (1.5 kg/cm²) | p. 118 |
| Check valve set pressure | 0.024 MPa (0.24 kg/cm²) | p. 118 |
| Torque converter outlet port pressure | 0.38 ± 0.05 MPa (3.9 ± 0.5 kg/cm²) | p. 178 |
| Standard length of modulating time adjustment screw | 6.75 mm | p. 202 |
| Coolant capacity | 20 L | p. 302 |
| Radiator mounting bolt torque | 112.8 ± 9.8 Nm | p. 305 |
