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TM 5-4320-305-24
4-4. REPAIR INJECTION PUMP (Continued)
h. Check that rod (64) and gear ring (61) move freely. Check that gear ring moves through its full range of travel. If
necessary, reposition gear ring on rod according to step f.
i. Repeat steps a through h for remaining five bores.
16 Place together the following parts tagged during disassembly as belonging to bore number one: roller tappet
assembly (55), piston (56), lower spring cap (57), piston spring (58), and upper spring cap (59). Install these parts in
bore number one as follows:
a. Install upper spring cap (59).
b. Install piston spring (58).
c. Install piston (56) and lower spring cap (57) using
plunger pliers KDEP 2915. Position i
Identification mark on piston as shown.
d. Grasp roller tappet assembly (55) using tappet tongs KDEP 2941. Insert tappet assembly (55) through housing
bore.
e. Reach through housing bottom bore using second tappet tongs KDEP 2941. Grasp roller tappet assembly (55)
and aline tappet pin with guide groove of housing bore.
f. Place bottom pawl of tappet holder KDEP 2912 between tappet screw and nut.
g. Press lever of tappet holder KDEP 2912 and guide top pawl of tappet holder into housing recess.
h. Repeat steps a through g for remaining five bores.
17 Install bearing cup (80) into housing.
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