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 1015 of 1207

TM 9-2320-361-20

14-8. ENGINE COOLANT HEATER REPLACEMENT

This task covers:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

All

TM 9-2320-361-10

MATERIALS/PARTS

TM 9-2320-361-20P

Cotter pin

EQUIPMENT CONDITION

Parking brake set (TM 9-2320-361-10).

Battery ground cable disconnected (para. 4-48).

1.

2.

3.

4.

5.

6.

NOTE

Prior to removal, close fuel shutoff, engine oil, and water manifold

valves.

Have drainage container ready to catch coolant.

Disconnect harness (3) from heater (4).

Disconnect fuel line (1) from elbow (14).

Remove clamp (13) and hose (12) from elbow (11).

Remove cotter pin (10) and elbow (8) from heater (4). Discard cotter pin (10).

Remove clamp (6) and hose (5) from elbow (7).

Remove two clamps (9) and heater (4) from saddle brackets (2).

b. Installation

1. Install heater (4) on saddle brackets (2) with two clamps (9).

2. Install hose (5) on elbow (7) with clamp (6).

3. Install elbow (8) on heater (4) with new cotter pin (10).

4. Install hose (12) on elbow (11) with clamp (13).

5. Connect fuel line (1) to elbow (14).

6. Connect harness (3) to heater (4).

14-10