Detroit Diesel 4000 Series, Service Manual, Page: 1276 / 2706

SERIES 4000 12/16V SERVICE MANUAL
5. Inspect threads of components for ease of movement.
[a] If threads do not show ease of movement, rechase as necessary or replace component
with thread insert.
[b] If threads do not show difficulty in movement, continue inspection.
6. Inspect blanking plugs for leaks.
[a] If blanking plugs show leaks, replace as necessary.
[b] If blanking plugs do not show leaks, continue inspection.
7. Replace hose line as part of every W6 overhaul.
8. Replace gaskets, sealing rings and O-rings.
9. Ensure that oil chambers and oil passages are perfectly clean.
Inspection and Repair of Centrifugal Oil Filter Assembly
Perform the following steps to inspect and repair the centrifugal oil filter:
1. Remove sludge deposits from the inside of the rotor cover using a spatula. Sludge deposits
should not exceed 35 mm (1.4 in.). See Figure 764.
To avoid an eye injury when blow drying parts, wear
adequate eye protection (safety glasses or faceplate) and
do not exceed 276 kPa (40 lb/in.
2
) air pressure.
2. Ensure that all rotor components (including the two nozzles located in the rotor body) are
thoroughly cleaned with a suitable cleaning fluid and free from debris before reassembly.
If the nozzle is not open, clean with a soft wire. See Figure 767.
NOTE:
Care should be taken when cleaning each component. An unbalanced condition could
occur if all debris is not removed.
All information subject to change without notice.
C -1130
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