FUEL PUMP (IN-TANK) REMOVAL AND REPLACEMENT.

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

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

Flat-tip screwdriver

TOOLS :

7/16-inch wrench

3/4-inch wrench

3/8-inch wrench

Tape measure

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

SUPPLIES :

Sealer compound, type II, MIL-S-45180

One

PERSONNEL:

Truck parked, engine off, handbrake set.

EQUIPMENT

CONDITION:

WARNING

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.

Preliminary Procedures.

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

several 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

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

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

tee fitting (6) .

GO TO FRAME 2