TM 5-3805-280-24-2
Fuel System
35
2. Rotate injection pump drive hub until marks on drive
52
hub (B) and pointer (A) are aligned.
NOTE: It may be necessary to rotate pump hub slightly to
allow JDG886 Injection Pump Timing Pin (E) to
enter bearing plate.
3. Thread JDG886 Timing Pin into drive hub as shown,
and tighten until it bottoms against the drive hub with
the timing pin located in hole of pointer (A).
4. Install a new O-ring (C) on bearing plate. Lightly
lubricate O-ring with AR54749 Soap Lubricant to aid in
pump installation and prevent O-ring damage.
5. Install injection pump using moderate forward pressure
and slight rocking motion to work O-ring into mounting
bore. Injection pump flange should seat solidly against
cylinder block.
6. Install mounting stud nuts and tighten to specifications.
Nippondenso Injection Pump Mounting Nuts--Specification
Torque ............................................................................. 70 Nm (52 lb-ft)
7. Carefully install drive gear on pump drive hub, position
A--Pointer
gear so mounting cap screws are approximately
B--Drive Hub
centered in mounting slots. This will allow for minor
C--O-Ring
D--Bearing Plate
adjustment of pump timing, should the need arise.
E--JDG886 Injection Pump Timing Pin
Continued on next page
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