TM-9-2320-209-20-3-1

2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; TROUBLESHOOTING; ORGANIZATIONAL LEVEL; VOLUME 3 OF 3; PART 1 OF 4

MAY 1981

TM-9-2320-209-20-3-1 - Page 128 of 830

TM 9-2320-209-20-3-1

4-8. FUEL PUMP (IN-TANK) REMOVAL AND REPLACEMENT.

TOOLS :

Flat-tip screwdriver

7/16-inch wrench

3/4-inch wrench

3/8-inch wrench

Tape measure

SUPPLIES : Solvent, dry cleaning, type II (SD-2), Fed. Spec P-D-680

Sealer compound, type II, MIL-S-45180

PERSONNEL:

One

EQUIPMENT CONDITION:

Truck parked, engine off, handbrake set.

WARNING

a.

several

b.

Preliminary

Do not permit smoking, sparks or open flame

within 50 feet of truck during fuel pump removal.

Fuel could explode, causing injury to personnel

and damage to equipment.

Procedures.

(1) On trucks M756A2, M275A1, and M275A2, fuel tank must be moved out

inches to replace in-tank fuel pump.

Refer to para 4-6 and para 4-7.

(2) Disconnect battery ground cable. Refer to para 7-58.

Removal.

FRAME 1

1.

Take electrical connector (1) off fuel pump receptacle ( 2).

2.

Using 3/8-inch wrench, unscrew heater line coupling nut (3) from elbow ( 4).

NOTE

Some trucks may not have heater fuel line. If not, pipe

plug replaces elbow.

3.

Using 3/4-inch wrench, unscrew feed line coupling nut (5) from fuel pump

tee fitting (6) .

GO TO FRAME 2

4-46