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TM 10-4320-316-14
4-34. FUEL INJECTOR PUMP REPLACEMENT.
This Task Covers:
a.
Removal
b. Inspection
c. Installation
Initial Setup:
Tools Required
Tool Kit, General Mechanic's (Appendix B, item 1)
Material's Required
None
Equipment Condition
DED pump assembly shut down and cool.
Fuel tank removed (see paragraph 4-27).
Inlet enclosure removed (see paragraph 4-22).
a. Removal. (Refer to Figure 4-26).
(1)
Loosen hex nut (2) securing pump viewing access plate (3) and gasket (4). Discard gasket.
(2)
Loosen two hex nuts (5) securing fuel injection pump (6), and remove pump together with base mounting plate.
(3)
Remove metal shim (7).
(4)
If flat tappet (8) is not removed with fuel injection pump, then remove flat tappet with fingers.
b. Inspection. Check for damaged parts and/or evidence of leakage.
c. Installation.
NOTE
When replacing or installing a new fuel injection pump, it is usually not
necessary to test or adjust the injection timing. Run the engine and
observe performance and exhaust color (refer to Table 4-2) before
adjusting timing.
(1)
Insert bottom flat tappet (8) down into engine block, closed end first.
(2)
Adjust speed control lever (9) until governor yoke (10) is centered in engine block opening.
(3)
Refer to Figure 4-27. The access hole on fuel injection pump has an access hole pointer match mark (1). Make
sure the pointer (2) of the control lever lines up with the match mark.
(4)
Refer to Figure 4-26. Position metal shim (7) and carefully insert fuel injection pump (6) onto the studs, making
sure the speed control lever engages into governor yoke (9).
(5)
Secure fuel injection pump onto studs using two nuts (5).
(6)
Attach pump viewing access plate (3) and new gasket (4) with one hex nut (2).
4-78
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