TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
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12-95. TROOP/CARGO WINTERIZATION HEATER ASSEMBLY REPLACEMENT (Cont’d) TM 9-2320-280-20-3 12-138 Change 2 4. Disconnect cannon plug (2) from heater (3). 5. Remove two clamps (1) and heater (3) from heater base assembly (4) . 6. Remove air inlet adapter (5) from heater (3). 7. Remove O-ring (6) and washer (7) from heater (3). Discard O-ring (6). 8. Remove exhaust extension (8) from heater base assembly (4). b. Installation NOTE When installing exhaust extension into heater base assembly, ensure tab on exhaust extension and notch in heater base assembly are aligned. 1. Apply sealant to underside surface of flange on exhaust extension (8), and install exhaust extension (8) on heater base assembly (4). 2. Install washer (7) and O-ring (6) on heater (3). 3. Install air inlet adapter (5) on heater (3). 4. Install heater (3) on heater base assembly (4) with two clamps (1). 5. Connect cannon plug (2) to heater (3). WARNING Ensure handle on diverter assembly is facing toward left side of vehicle. Improper installation of the diverter assembly may cause serious injury to personnel. 6. Install diverter assembly (10) on air inlet adapter (5) with clamp (9). 7. Apply sealing compound to threads of connector (13) and install connector (13) on heater inlet port (14). 8. Connect filter-to-heater fuel supply hose (11) to connector (13) with clamp (12).