1994-1998 Komatsu D31E-18, D31P-18, D31P-18A, D31PL-18, D31PLL-18, D31S-18, D31Q-18, D37E-2, D37P-2 Shop Manual

• Official 371-page Komatsu publication SEBM01141805 covering 1994–1998 production units.
• Details 1994–1998 Komatsu D31E-18, D31P-18, D31P-18A, D31PL-18, D31PLL-18, D31S-18, D31Q-18, D37E-2, and D37P-2 bulldozers equipped with the 6D95L-1 engine.
• Contains 56 cross-sectional diagrams of transmission and hydraulic systems, 14 performance tables, and 23 technical charts to streamline shop diagnostic work.
• Fully searchable OCR text layer allows technicians to quickly jump to specific torque specs during a repair procedure.
• Documents D31-18 and D37-2 series machine architecture, noting serialized adjustments for 40001-series D31 and 1501-series D37 frames.

Component and System Overview

The service manual documents technical parameters for the 6D95L-1 diesel engine. This includes cylinder head assembly, valve clearance, and fuel injection pump synchronization. Mechanics will find primary sections detailing power train components, such as the Hydroshift transmission structure, steering control valves, booster cylinders, and the final drive assembly. Furthermore, the text covers undercarriage maintenance standards and hydraulic system circuit diagrams. Electrical wiring code classifications are also provided to accurately identify wire thickness alongside current ratings. Working on heavy machinery involves inherent physical risks. Technicians must verify all pressure release protocols and system lockouts prior to beginning any maintenance task.

Specification and Data Preview

Essential technical data is outlined throughout the guide. You will find tightening torques for bolts, nuts, and flared fittings, alongside clearance standards for control valves and internal engine parts. The transmission main relief pressure is explicitly documented at 20–23 kg/cm² under full throttle conditions. For the D31 series, steering main relief pressure remains at 18–20 kg/cm² at low engine idling. Transmission control valve spool-to-body clearance specifies a strict 0.035–0.058 mm tolerance. Finally, inching pedal travel for full engagement is set between 103–113 mm. This page serves as a descriptive contents overview rather than a step-by-step repair guide.