Komatsu WA250-5H / WA250PT-5H Shop Manual (P/N VEBM230102)

• Built for workshops and owners servicing the 2003 Komatsu WA250-5H and WA250PT-5H wheel loaders (applies to serial numbers 50051 and up)
• Official OEM publication P/N VEBM230102, first edition March 2003
• Delivers 849 pages of technical specifications, maintenance standards, and complete hydraulic and electrical circuit diagrams
• Provides detailed assembly, testing, and adjustment parameters specifically for the SAA6D102E-2-A engine and hydrostatic drive components

Component Documentation

This publication breaks down the primary systems and mechanical assemblies you deal with on the floor. It dives deep into the HST (Hydrostatic Transmission) circuit. You get complete internal breakdowns for the variable displacement pump, drive motors, and speed-related control valves. Need specs for the cooling system? The radiator and oil cooler technical details are clearly mapped out. It also details the entire power train assembly, from the transfer case down to the differentials and final drives. Mechanics receive exact assembly drawings and maintenance criteria for the steering column, piping, and axle mounting configurations. It even outlines the exact tolerances required for the limited-slip differential mechanism.

Specification Highlights

Get the exact numbers required for precision bench work and teardowns. Engine assembly data covers the complete SAA6D102E-2-A configuration parameters. The lubrication charts give exact filling capacities, mapping out systems like the 135-liter hydraulic circuit. You will find precise cylinder specifications for steering, lift, and bucket functions, complete with stroke and diameter limits. It eliminates guesswork with comprehensive tightening torque tables for metric bolts, flared nuts, and split flange connections. Test adjustments are clearly defined. For example, relief valve pressures are strictly specified at 20.6 MPa (210 kg/cm2) for equipment control valves. Clearance charts track wear limits for bearings, seals, and bushings across the chassis and powertrain. Working on heavy equipment involves immense pressures and heavy loads; always adhere strictly to the outlined protocols for safe hoisting and the correct depressurization of hydraulic lines before starting any teardown or maintenance task.