TM 9-2320-272-24-4
5-14. GOVERNOR SPRING PACK MAINTENANCE
THIS TASK COVERS:
a. Removal
c. Installation
b. Inspection
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
M939/A1
TM 9-2320-272-24P
EQUIPMENT CONDITION
TOOLS
General mechanic's tool kit (Appendix E, Item 1)
Fuel pump mounted on holding fixture (para. 5-12).
Spring tester (Appendix E, Item 131)
MATERIALS/PARTS
Retaining ring (Appendix D, Item 538)
Gasket (Appendix D, Item 223)
Seal (Appendix D, Item 612)
NOTE
Spring packs are maintained basically the same for AFC and
VS fuel pumps. This procedure covers the AFC fuel pump.
a. Removal
1.
Remove seal (12) from governor adjusting screw (13) and throttle leakage adjusting screw (18).
Discard seal (12).
2.
Remove four screws (14), spring pack cover (15), and gasket (16) from fuel pump (1). Discard
gasket (16).
3.
Remove retaining ring (11), spring retainer (10), shim(s) (9), spring (8), spring guide (5), washer (4),
spring (3), and plunger (2) from spring pack barrel (17). Discard retaining ring (11).
4.
Remove adjusting screw (7) and spring (6) from spring guide (5).
b. Inspection
1.
For general inspection instructions, refer to para. 2-15.
2.
Inspect spring pack cover (15) for cracks, breaks, and stripped threads. Replace spring pack cover (15)
if cracked, broken, or threads are stripped.
3.
Using spring tester, inspect tension of spring (8). Replace spring (8) if tension is not within 0.69-0.85 lb
(0.31-0.39 kg) when compressed to 1.0 in. (25.4 mm).
4.
Using spring tester, inspect tension of spring (3). Replace spring (3) if tension is not within 16.02-
17.78 lb (7.27-8.07 kg) when compressed to 1.025 in. (26.0 mm).
5-94
