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TM 5-4320-308-13
4-15. TEST/REPLACE/ADJUST INJECTION PUMP (Continued)
NOTE
The position achieved above is the end of delivery. If the shim pack is of the correct
thickness, the timing marks on flywheel (1) (11.5 to 12.5 degrees) should align with reference
mark (4).
3
Block fuel hose (from fuel tank) using fuel
shutoff clamp 668 383 00.
4
If timing marks do not align with reference
mark (4), rotate outer face of dial gage
612 087 00 until "0" mark aligns
with
needle.
5
Slowly rotate flywheel (1) in either
direction to align timing marks of 11.5 to
12.5 degrees with reference mark (4).
Gage reading will indicate amount of
reshimming (as necessary).
NOTE
The end of delivery is delayed or advanced by adding or removing shims (1) to injection pump
(2). The general rule for shimming is as follows: More shims = end of delivery later (lower
number of degrees) Less shims = end of delivery earlier (higher number of degrees)
6
Remove fuel shutoff clamp 668 383 00 from fuel hose.
7
After correction of shimming, repeat steps 1 and 2 for checking purposes.
4-32
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