TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 430 of 1015
TM 9-2320-272-24-1
3-20. FUEL TRANSFER PUMP AND SUPPLY LINES (M939A2) MAINTENANCE
THIS TASK COVERS:
a. Removal
b. Cleaning and Inspection
c. Installation
INITIAL SETUP:
APPLICABLE MODELS
M939A2
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
MATERIALS/PARTS
Banjo seal (Appendix D, Item 9)
Two seal washers (Appendix D, Item 645)
Two seal washers (Appendix D, Item 646)
Gasket (Appendix D, Item 139)
Antiseize tape (Appendix C, Item 72)
REFERENCES (TM)
TM 9-2320-272-10
TM 9-2320-272-24P
EQUIPMENT CONDITION
l
Parking brake set (TM 9-2320-272-10).
l
Hood raised and secured (TM 9-2320-272-10).
GENERAL SAFETY INSTRUCTIONS
Diesel fuel is flammable. Do not perform this task
near open flames.
a. Removal
WARNING
1.
2.
3.
4.
5.
6.
7.
8.
Diesel fuel is highly flammable. Do not perform fuel system
procedures near open flames. Injury to personnel may result.
Disconnect fuel pressure transducer (1) from wiring harness (2).
Remove fuel pressure transducer (1) from adapter (10).
Remove adapter (10), two seal washers (11), and fuel supply tube (5) from fuel transfer pump (13).
Discard seal washers (11).
Remove fuel supply line (16) from elbow (15) on fuel transfer pump (13).
Remove two screws (14), fuel transfer pump (13), and gasket (12) from engine block (17). Discard
gasket (12).
Remove elbow (15) from fuel transfer pump (13).
NOTE
Perform steps 7 and 8 if fuel supply tube is damaged.
Remove screw (8), banjo seal (9), and fuel drain manifold (7) from adapter (6). Discard banjo seal (9).
Remove adapter (6), two seal washers (4), and fuel supply tube (5) from fuel filter head (3). Discard
seal washers (4).
b. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-14.
2.
For general inspection instructions, refer to para. 2-15.
3.
Replace all parts failing inspection.
3-66
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