TM-9-2320-272-24-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4
JUNE 1998
TM-9-2320-272-24-2 - Page 942 of 991
TM 9-2320-272-24-2
4-35. FUEL PUMP REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
c. On-Engine Adjustments
APPLICABLE MODELS
EQUIPMENT CONDlTlON
M939/A1
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Parking brake set (TM 9-2320-272-10).
TOOLS
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Hood raised and secured (TM 9-2320-272-10).
General mechanic’s tool kit (Appendix E, Item 1)
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Left splash shield removed (TM 9-2320-272-10).
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Air reservoir drained (TM 9-2320-272-10).
MATERIALS/PARTS
Three locknuts (Appendix D, Item 276)
Gasket (Appendix D, Item 138)
Lockwasher (Appendix D, Item 382)
Cap and plug set (Appendix C, Item 14)
Lubricating oil (Appendix C, Item 50)
Antiseize tape (Appendix C, Item 72)
REFERENCES (TM)
TM 9-2320-272-10
TM 9-2320-272-24P
GENERAL SAFETY INSTRUCTIONS
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Fuel pump body must be thoroughly cleaned
before disconnecting any attaching components.
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Do not disconnect air line before draining air
reservoirs.
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Hearing protection must be worn when engine is
running.
1.
Disconnect lead (1) from fuel pressure transducer (11) and remove fuel pressure transducer (11)
from fuel pump (10).
2.
Disconnect fuel line (4) from fuel shutoff valve (6).
3.
Remove nut (8) and wires (7) from terminal (9).
4.
Loosen screw (2) and remove cable (5) from fuel shutoff lever (3).
5.
Remove locknut (14) and screw (20) and disconnect rod clevis ( 13) from pump throttle lever (12).
Discard locknut (14).
Discard locknut (14).
6.
Remove return spring (17) from modulator control link (16) and modulator cable clamp bracket (18).
Remove return spring (17) from modulator control link (16) and modulator cable clamp bracket (18).
7.
Remove locknut (22) and (15), screws (24) and (19), and rod clevis (23) from pump throttle lever (21).
Discard locknuts (22) and (15).
Discard locknuts (22) and (15).
4-260
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