Komatsu D155AX-6 GALEO Bulldozer Shop Manual – Complete Service & Repair Workshop Guide

Description

Komatsu D155AX-6 GALEO Bulldozer Shop Manual – Complete Workshop Guide

This Komatsu D155AX-6 GALEO Bulldozer Shop Manual is the complete service and repair guide for machines from serial number D155AX-80001 and up. It covers the full range of systems on the machine — engine, cooling, power train, hydraulics, undercarriage, frame, work equipment, cab, and electrical system — with the specifications, testing procedures, troubleshooting charts, and step-by-step disassembly and assembly instructions needed by professional technicians and serious owner-operators.

Whether you are performing routine maintenance, diagnosing a fault code, measuring oil pressure, overhauling a transmission clutch, or removing the power train unit, this D155AX-6 GALEO shop manual provides the procedures and reference values to do the job correctly. The manual is structured across eight major sections: Index and Foreword, Specification, Structure Function and Maintenance Standard, Standard Value Table, Testing and Adjusting, Troubleshooting, Disassembly and Assembly, and Diagrams and Drawings. Each section is broken into numbered Form documents (SEN-series) covering individual systems and subassemblies.

File Details

• Manual type: Komatsu Shop Manual (Workshop / Service / Repair Manual)
• Brand: Komatsu
• Model: GALEO D155AX-6
• Serial number range: D155AX-80001 and up
• Language: English
• File format: PDF
• Page count: Approximately 1,146 pages
• Publication data: 2006 KOMATSU / Printed in Japan
• Document numbers: SEN00596-02 (contents binder), SEN00597-02 (Index), SEN00598-02 (Foreword & general information), SEN00599-00 (Foreword), SEN00600-00 (Specification), SEN00601-00 (Specifications & technical data), SEN00602-00 to SEN00610-00 (Structure, function & maintenance standard), SEN00678-01 (Standard value table), SEN00679-01 through SEN00682-01 (Testing & adjusting Parts 1–4), SEN00851-00 through SEN00852-01 (Troubleshooting), SEN01204-00 through SEN01206-00 (Disassembly & assembly), SEN00616-01 (Hydraulic circuit diagram), SEN00617-02 (Electrical circuit diagram)

Chapters Covered

• 00 – Index and Foreword: Safety notice, how to read the shop manual, standard tightening torque tables, conversion tables
• 01 – Specification and Technical Data: Specification dimension drawings, specifications, weight table, fuel/coolant/lubricant table
• 10 – Structure, Function and Maintenance Standard:
  • Engine and cooling system: Radiator, oil cooler, engine mount, cooling fan pump, cooling fan motor
  • Power train system Part 1: Power train skeleton, torque converter, PTO, transmission, ECMV, HSS
  • Power train system Part 2: HSS system, HSS motor, HSS pump, steering and brake control, final drive, sprocket
  • Undercarriage and frame: Track frame, recoil spring, idler, track roller, carrier roller, track shoe, main frame, suspension
  • Hydraulic system: Work equipment hydraulic piping, control valve, work equipment cylinder, quick drop valve
  • Work equipment: Cylinder stay, blade, cutting edge, ripper
  • Cab and its attachments: Cab mount, ROPS cab, air conditioner
  • Electrical system: Engine control, monitor system, sensors, PCCS lever
• 20 – Standard Value Table: Standard value table for engine and machine
• 30 – Testing and Adjusting:
  • Part 1: Engine speed, intake air pressure, exhaust temperature, valve clearance, compression pressure, blow-by, oil pressure, fuel system tests, fan speed, belt tension
  • Part 2: Power train oil pressure, brake performance, idler clearance, track shoe tension, work equipment and HSS oil pressure, control circuit pressure
  • Part 3: Special functions of machine monitor (EMMS)
  • Part 4: Power supply circuit, electrical troubleshooting preparation, Pm Clinic
• 40 – Troubleshooting:
  • General information on troubleshooting
  • Troubleshooting by failure and error codes (Parts 1–8): Complete failure code tables covering transmission clutch, brakes, engine controller codes, EGR system, electrical circuits, sensors and actuators
  • Electrical system (E-mode): Machine monitor, gauges, air conditioner, wipers, lamps
  • Hydraulic and mechanical system (H-mode): Power train, steering, brake, work equipment
  • Engine (S-mode): Starting, output, exhaust, oil consumption, overheating, noise, vibration
• 50 – Disassembly and Assembly:
  • Engine and cooling system: Fuel supply pump, fuel injector, cylinder head, radiator, aftercooler, engine assembly, engine hood
  • Power train Part 1: Damper assembly, power train unit assembly, disconnection and connection
• 90 – Diagrams and Drawings: Power train hydraulic circuit diagram, hydraulic circuit diagrams (1/2 and 2/2), electrical circuit diagram

The Komatsu D155AX-6 GALEO Bulldozer Shop Manual is organized so that a technician can move logically from specification data and structural understanding through testing, diagnosis, and finally to removal, disassembly, assembly, and installation. The Structure, Function and Maintenance Standard section explains how each component works and gives the criteria and remedies for disassembly and service. The Standard Value Table provides the judgment criteria used during testing and adjusting, so that worn or out-of-spec parts can be identified precisely. The Testing and Adjusting sections give the measuring instruments and methods for every adjustable system on the machine — engine speed, oil pressures, valve clearance, belt tensions, brake pedal, parking brake, track tension, idler clearance, and more. The Troubleshooting sections are divided by failure mode: electrical (E-mode), hydraulic and mechanical (H-mode), and engine (S-mode), with detailed failure code tables, connector pin reference tables, and T-box/T-adapter tables for effective fault finding. The Disassembly and Assembly sections cover special tools, tightening torques, coating materials, and procedures for the major components, including the fuel supply pump, fuel injectors, cylinder head, radiator, aftercooler, engine assembly, damper assembly, and power train unit.

For owners of the D155AX-6 GALEO dozer, this manual enables a wide range of work to be carried out accurately: engine valve clearance adjustment, compression and blow-by testing, fuel pressure and return rate measurement, torque converter stall speed testing, transmission clutch pressure testing, brake performance testing, HSS relief pressure checking, track tension adjustment, work equipment speed and drift measurement, and complete removal and installation of the power train unit. The electrical troubleshooting sections support diagnosis of the machine monitor, engine controller, power train controller, and work equipment controller, including CAN communication faults, sensor failures, and solenoid circuit faults, using the documented failure codes and their causes.

Having the correct procedures and specifications matters because the D155AX-6 is a large, hydraulically and electronically complex bulldozer. Incorrect adjustment of the transmission clutch pressures, brake pressures, or HSS system can lead to premature wear or unsafe operation. Incorrect torque values during assembly can cause failures. The D155AX-6 shop manual removes guesswork by giving the factory-developed criteria for every major system. The troubleshooting sections let you identify the root cause of a problem — whether it is a failed sensor, a wiring fault, a hydraulic pressure issue, or a mechanical wear condition — before parts are unnecessarily replaced. The disassembly and assembly procedures include the special tools and tightening torques needed to complete the work safely and to the correct standard.

This Komatsu D155AX-6 GALEO Bulldozer Shop Manual PDF is delivered instantly after purchase. There is no shipping and no waiting for a physical book. The PDF can be viewed on any device — laptop, tablet, or smartphone — and relevant pages can be printed for use in the workshop. Whether you are a professional heavy equipment technician, a fleet maintenance manager, or a knowledgeable owner-operator, having the complete D155AX-6 shop manual on hand means you can service, diagnose, repair, and maintain the machine with the full backing of Komatsu’s documented procedures and specifications.

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