Overview
The Komatsu D155A-6 dozer repair service manual provides a technical reference for the covered equipment. Its purpose is to help locate information relevant to inspection, troubleshooting, servicing and repair, as applicable to the supplied publication.
The supplied contents outline identifies Manuals, 00 Index and foreword, Foreword and general information and 01 Specification. The table below follows the provided section names and selected topics; consult the manual for the exact procedures and specifications.
Important Information: Confirm the applicable serial-number or production range in the supplied documentation before selecting a procedure.
Table of Contents
Komatsu D155A-6 Manual
Main sections and selected subjects identified in the source documentation:
- Manuals: Shop Manual and Operation and Maintenance Manual
- 00 Index and foreword
- Foreword and general information
- 01 Specification
- Specification and technical data
- 10 Structure, function and maintenance standard
- Engine and cooling system
- Power train
- Undercarriage and frame
- Hydraulic system
- Work equipment
- Cab and its attachments
- Electrical system
- 20 Standard value table
- Standard service value table
- 30 Testing and adjusting
- 40 Troubleshooting
- 50 Disassembly and assembly
- 60 Air conditioner
- 90 Diagrams and drawings
- General Instructions
- Structure and Function.
- Testing and Adjustments.
- Troubleshooting
- Typical common troubles are listed and systematically described; with their causes and the procedures for finding and diagnosing the symptoms.
- Manual Specifications Dozer
- Hydraulic motor
- Function
- Principle of operation
- The oil sent from the hydraulic pump flows through valve plate (7) into cylinder block (5).
- This oil can flow on only one side of the (Y-Y) line connecting the top dead center and bottom dead center of the stroke of piston (4).
- The oil sent to one side of cylinder block (5) presses piston (4) [4 or 5 pieces], and generates force (F1)[F1 = P x xD2/4].
Serial-Number Applicability
The covered production ranges or serial groups may affect the applicable procedures. Check the identification details on the machine against the source documentation.










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