TM 9-4110-255-14
NOTE
The injection pump uses special gaskets as shims/seals and are not re-usable. The quantity and
thickness of gaskets determines the timing of the injection pump.
(8) Remove two nuts (20), injection pump (12), and gasket(s) (21). Note quantity and thickness of gasket(s)
and discard.
NOTE
The injection pump tappet can remain in the engine.
(9) If tappet (22) is attached to injection pump (12) spring, remove it.
(10) Remove stud(s) (23) if damaged.
c. Installation.
(1) If removed, install stud(s) (23).
NOTE
The injection pump uses special gaskets as shims/seals and are not re-usable. The quantity and
thickness of gaskets determines the timing of the injection pump.
(2) Install tappet (22) if removed, new gasket(s) (21) as noted during removal, and injection pump (12) being
careful to align lever arm (24) with hole in connecting rod (25). Install two nuts (20) and clip (19). Torque
nuts to between 27 and 31 ft lb (37 and 42 Nm).
(3) Check adjustment of injection pump (12).
d. Adjustment.
(1) Install fuel filter to injection pump hose assembly (13) (para 4-61).
NOTE
The intake rocker arm will be in line with the intake manifold port.
(2) Place a rag over injection pump fitting (9). Slowly rotate engine flywheel (11) clockwise and observe the
intake rocker arm (26) movement. The intake rocker arm will move down during an intake stroke and then
begin to rise as the compression stroke begins. Stop rotating the engine pulley at this point.
(3) Position the connecting rod (25) at full open position (right).
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