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