Komatsu D155AXi-8 Dozer Service Manual

Table of Contents

• Index and Foreword
• Specification
• Structure and Functions
• Standard Value Table
• Testing and Adjusting
• Troubleshooting
• Disassembly and Assembly
• Appendix
• Circuit Diagrams
• Index

Repair limit and allowable value or allowable dimension
• The dimension of parts changes due to the wear or deformation while they are used. When the dimension changes exceeding certain value, parts cannot be used any longer. This value is called “repair limit”.
• If a part is worn to the repair limit, it must be replaced or repaired.
• The performance and function of products lower while they are used. A value with which the product can be used without causing a problem is called “allowable value” or “allowable dimension”.
• A product whose dimension is out of the allowable value, must be repaired. However, since the allowable values are generally estimated through various tests or experiences in most cases, the judgment must be made in consideration of the operating condition and customer’s requirement.

Allowable clearance
• Parts can be used until the clearance between them is increased to a certain limit. The limit at which those parts cannot be used is called “allowable clearance”.
• If the clearance between the parts exceeds the allowable clearance, they must be replaced or repaired.