b. INSTALLATION - TM-9-2320-289-20

11-15. ENGINE COOLANT HEATER HOSES AND FITTINGS REPLACEMENT (Cont)

11-16. ENGINE COOLANT HEATER REPLACEMENT

/.25ton/TM-9-2320-289-20 CUCV Series Trucks at Unit level Manual
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TM 9-2320-289-20 11-15. ENGINE COOLANT HEATER HOSES AND FITTINGS REPLACEMENT (Con’t). b. INSTALLATION 1. 2. 3. 4. 5. NOTE • If installing fittings, perform steps 1, 2, and 4. • If installing hoses, perform steps 3-5 as required. Apply pipe sealant to pipe nipple (13) threads and install on engine coolant heater (19). Apply pipe sealant to elbow (12) and coupling half (11) threads and install. Install heater thermostat (14) on engine coolant heater. Apply pipe sealant to coupling half (15) threads and install. Connect electrical connector to heater thermostat. Connect adapter (17) to inlet hose (7) and tighten clamp (18). Apply pipe sealant to coupling half (16) threads and connect to adapter (17). Connect adapter (9) to outlet hose (6) and tighten clamp (8), Apply pipe sealant to coupling half (10) threads and connect to adapter (9) . Connect outlet hose (6) to pipe assembly (24) and tighten clamp (23). Connect inlet hose (7) to crossover pipe (3) and tighten clamp (4). Apply pipe sealant to coupling half (16) threads and connect to coupling half (15). Apply pipe sealant to coupling half (10) threads and connect to coupling half (11). NOTE On M1010, clamp (5) is installed on compressor bracket instead of alternator bracket (20). Install clamp (2) on outlet hose (6). Install clamp (2) with bolt (1), washer (21), and nut (22). Install clamp (5) on outlet hose and inlet hose (7). Install clamp (5) on alternator bracket (20) with bolt. FOLLOW-ON TASKS: • Fill cooling system. (See paragraph 3-30) • Start engine and check for leaks. 11-59

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