TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 345 of 1207
TM 9-2320-361-20
3-26. FUEL PUMP (IN-TANK) MAINTENANCE
This task covers:
a. Testing Fuel Pump Pressure
d. Cleaning and Inspection
b. Removal
e. Assembly
c. Disassembly
f. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-361-10
SPECIAL TOOLS
Fuel pressure gage, NSN 4910-00-255-8673
MATERIALS/PARTS
Nine lockwashers
Three gaskets
"O" ring
Lead seal
Locktab
Antiseize tape (Appendix C, Item 27)
TM 9-2320-361-20P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-361-10).
GENERAL SAFETY INSTRUCTIONS
Diesel fuel is flammable. Do not perform this
procedure near flames.
Some vehicles have two separate wires and con-
nectors. Connecting wires on wrong terminals may
cause fuel to ignite, resulting in injury to personnel.
a. Testing Fuel Pump Pressure
WARNIN G
Diesel fuel is flammable. Do not perform fuel system procedures
near open flame. Injury or death to personnel may result.
1. Disconnect fuel supply tube (3) from fuel pump (4).
2. Connect adapter (1) and fuel pressure gage (2) to fuel pump (4).
CAUTION
Starting engine may damage fuel pressure gage.
3. Turn accessory switch to ON position (TM 9-2320-361-10) to start fuel pump (4).
4. Read pressure on fuel pressure gage (2). If pressure reads at least 4 psi (27.6 kPa), operation of fuel
pump (4) is satisfactory. Turn accessory switch to OFF position (TM 9-2320-361-10) and remove fuel
pressure gage (2) and adapter (1) from fuel pump (4).
5. If fuel pressure gage (2) reads no pressure, inspect electrical connections and, if necessary, continue
with task b. to replace fuel pump (4).
3-42
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