Komatsu D155AX-5 / D155 Shop Manual (P/N SEBM016206)

• Covers 2004 Komatsu D155AX-5 configurations, including U-tiltdozer and ripper-equipped variants for serial numbers 70001 and up.
• Official Komatsu publication P/N SEBM016206, printed October 2004.
• Includes over 50 detailed system-level schematics, hydraulic circuit diagrams, and assembly illustrations to support your shop's repair workflow.
• Documents both SA6D140E-2 and SA6D140E-3 engine installations and power-train component integration.

System Architecture and Component Overview

This technical documentation outlines the internal structure and engineering parameters of the heavy-duty bulldozer. Instead of generic summaries, it provides shop-floor technicians with an exact breakdown of the HSS hydrostatic steering system, torque converter assemblies, power shift transmissions, and hydraulic control valve banks. You will find specific details mapping the mechanical linkage between the engine, cooling networks, and work equipment. Due to the high pressures and heavy components involved, verifying pressure relief procedures before servicing hydraulic systems is critical for operator safety. The manual acts as a comprehensive reference for these complex overhauls and standard repair procedures alike.

Specifications and Reference Values

Reliable maintenance requires accurate data. This resource provides complete technical specifications to properly torque bolts, nuts, and flared fittings across the entire machine. Key metrics include the HSS pump maximum delivery pressure of 41.2 MPa (420 kg/cm²) and a work equipment pump maximum pressure of 20.6 MPa (210 kg/cm²). It also lists fluid capacities based on machine configuration, such as the 625-liter main fuel tank.