TM 9-2320-289-34
3-42.
FUEL INJECTOR PUMP HYDRAULIC HEAD MAINTENANCE (Con’t).
3 .
CAUTION
DO NOT force hydraulic head assembly (10) into fuel injector pump (2)
housing. Withdraw hydraulic head assembly and try again if it jams.
Failure to follow this caution may result in damage to hydraulic head
assembly and fuel injector pump housing.
Only install hydraulic head assembly (10) far enough to aline head
locking screw- (1) holes. Failure to follow this caution may result in
damage to hydraulic head seal (9).
N O T E
Ensure that hole in rotor (16) slot
is alined with mark on drive shaft
tang to ensure proper installation
of rotor assembly to drive shaft.
Rotate cam ring (8) until smallest
hole
is
180 degrees
opposite
metering valve bore (4) and facing
downward.
Install hydraulic head
assembly (1 O) by grasping with both
hands and inserting with slight rotary
motion. Install 2 head locking screws
(1), but DO NOT tighten.
4 .
Carefully invert fuel injector pump
(2) .
TA50752
3 - 1 5 5
