Detroit Diesel 4000 Series, Service Manual, Page: 1369 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Inspection and Repair
Perform the following steps to inspect and repair the delivery valve:
NOTE:
Do not disassemble delivery valve.
1. Visually inspect delivery valve for damage.
[a] If delivery valve is damaged, replace component.
[b] If delivery valve is not damaged, continue inspection.
2. Visually inspect sealing surface (1) for unevenness. See Figure 825.
[a] If sealing surface is uneven, smooth with oilstone as necessary.
[b] If sealing surface is not uneven, continue inspection.
1. Sealing Surface
Figure 825 Visually Inspecting Sealing Surface
NOTE:
“A” is 49.8 mm +0.1 mm/-0.3 mm.
All information subject to change without notice.
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