Detroit Diesel 4000 Series, Service Manual, Page: 731 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 053.05.08 – INSPECTION AND REPAIR
Perform the following steps to inspect and repair the camshaft thrust bearing:
1. Clean all components.
2. Using the surface crack-testing method with red penetrant dye, inspect housing and thrust
bearing flange.
[a] If cracks are detected, replace part.
[b] If no cracks are detected, continue inspection.
3. Inspect all mating surfaces, running surfaces and fits; rub down with oilstone or emery
cloth as necessary.
4. Inspect all components for damage or excessive wear.
[a] If damage or excessive wear is found, replace components
[b] If no damage or excessive wear is found, continue inspection.
5. Measure camshaft thrust bearing against limit values.
[a] If camshaft thrust bearings are outside limits, machine as necessary.
[b] If correct limits cannot be achieved by machining, replace component
[c] If camshaft thrust bearings are not outside limits, continue inspection.
6. Inspect thread of hex bolts for ease of movement.
[a] If threads are damaged, replace bolts as necessary.
[b] If no damage is found, continue inspection.
NOTE:
Make sure parts are perfectly clean.
All information subject to change without notice.
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