Detroit Diesel 4000 Series, Service Manual, Page: 1248 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 181.05.08 – INSPECTION AND REPAIR
High-Pressure Oil Line
Perform the following operations for inspection and repair of the high-pressure oil line:
1. Clean all components.
To avoid an eye injury when using compressed air, wear
adequate eye protection (safety glasses or faceplate) and
do not exceed 276 kPa (40 lb/in.
2
) air pressure.
2. Clean high-pressure oil line with a suitable cleaner and blow clear with compressed air.
3. Visually inspect components for wear and damage.
[a] If components are worn or damaged, recondition or replace as necessary.
[b] If damage is beyond repair, replace components as necessary.
[c] If no wear or damage is found, continue inspection.
4. Visually inspect sealing surfaces for irregularities with ink-check plate.
[a] If irregularities are found, machine sealing surfaces.
[b] If no irregularities are found on sealing surfaces, continue inspection.
5. Visually inspect banjo bolts for wear or damage and threads for ease of movement.
[a] If banjo bolts are worn or damaged, or threads do not show ease of movement,
replace bolts as necessary.
[b] If banjo bolts are not worn or damaged and threads show ease of movement, continue
inspection.
6. Replace gaskets.
NOTE:
Ensure that parts are perfectly clean.
Oil Pump with Relief Valve
Perform the following steps for inspection and repair of the oil pump with relief valve:
NOTE:
Do not disassemble the oil pump.
All information subject to change without notice.
C -1102
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