TM-9-2815-225-34-P

ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2005

TM-9-2815-225-34-P - Page 485 of 736

TM 9-2815-225-34&P

0051 00

0051 00-5

GENERAL MAINTENANCE INSTRUCTIONS (Contd)

REPAIR OR REPLACEMENT

Parts that are beyond wear limit tolerances, broken, cracked, or otherwise damaged may be considered for

repair by special processes listed below by requesting approval from TACOM. In requesting approval, the

maintenance activity will furnish:

1.

Written repair procedure

2.

Specifications covering the procedure

3.

Reference drawing

Unrepairable Defects

Do not repair any of the following:

1.

Casting cracks at through-bores, threaded holes, or high-stress areas

2.

Cracked, chipped, ridged, or pitted gear teeth

3.

Cracked or split keyways

4.

Scored or scratched bores

5.

Cracked or chipped snapring grooves

6.

Oil channels with cracked walls or chipped edges

7.

Pitted or grooved gear teeth, unless otherwise indicated in this manual

8.

Parts showing evidence of overheating

9.

Chipped edges, burred sealing ridges, and longitudinal scratches on sealing surfaces