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 190 of 830

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

4-20.

ENGINE MANIFOLD HEATER PUMP LINES AND FITTINGS REMOVAL AND

REPLACEMENT (TRUCKS WITH ENGINES LDS 427-2 AND LDS 465-l).

TOOLS :

Flat-tip screwdriver 7/16-inch open end wrench

9/16-inch open end wrench

l/2-inch open end wrench

9/16-inch socket wrench

Pliers

3/8-inch open end wrench

SUPPLIES:

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

Sealer compound, type II, Mil Spec S-45180

EQUIPMENT CONDITION:

Truck parked, engine off, manifold heater switch in

OFF position, handbrake set.

a. Preliminary Procedures.

(1)

(2)

Take off intake air cleaner. Refer to para 4-3.

Disconnect battery ground cable. Refer to para 7-58.

NOTE

Tag all fuel lines before taking them off so

that they will be put back in the same place.

b. Removal.

1.

Using 3/8-inch open end wrenches, unscrew coupling nut (1) from union (2).

2.

Pull fuel supply tube (3) away from union (2).

3.

Using 7/16-inch open end wrench, unscrew coupling nut (4) from elbow (5).

4.

Pull fuel return tube (6) away from elbow (5).

GO TO FRAME 2

TA 04704 0

4-102