Komatsu D155AXi-8 Dozer Repair Manual

Shop Manual: 3283 pages
Operation and Maintenance Manual: 209 pages
Field Assembly Manual: 137 pages
Manuals: Shop Manual, Operation and Maintenance Manual and Field Assembly Manual
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.