TM 9-2320-289-34
3-42.
FUEL INJECTOR PUMP HYDRAULIC HEAD MAINTENANCE.
This task covers:
a. Removal
d, Assembly
b. Disassembly
e. Installation
c. Inspection
INITIAL SETUP:
Equipment Condition
Materialist Parts
Fuel injector pump throttle shaft and
. One delivery valve stop
governor assembly removed.
. One head locating screw seal
(See paragraph 3-39)
. One hydraulic head seal
Fuel injector pump servo advance piston
Acetone (Item 1, Appendix B)
removed. (See paragraph 3-40)
. Calibration fluid (Item 13, Appendix B)
Fuel injector pump regulator and transfer
. Grease (Item 36, Appendix B)
pump blades removed. (See paragraph 3-41 ) l “O“ ring lubricant
(Item 42, Appendix B)
TooLs/Test Equipment
. Screwdriver bit set, J-29843
l Micrometer
. Roller testing fixture
l Snapring pliers
l Torque wrench
a . R E M O V A L
CAUTION
Ensure that work area, tools, and
hands are
kept
clean
when
repairing fuel injector pump (2),
Failure to follow this caution may
result in damage to fuel injector
pump components.
NOTE
Ensure that each component is
placed in calibration fluid as it is
removed.
1.
Remove 2 head locking screws (1),
2.
Remove head locating screw (3).
Remove seal from head locating
screw and discard seal.
3 .
Install fuel injector pump (2) in
soft-jawed
vise,
and
slightly tilt
forward.
TA50743
3-146
