TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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TM 9-2320-387-24-2 25-58 Change 1 25-21. A/C HEATER/EVAPORATOR ASSEMBLY (FRONT) REPLACEMENT This task covers: a. Removal b. Installation a. Removal INITIAL SETUP: Applicable Models M1114 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Lockwasher (Appendix G, Item 199) Personnel Required One mechanic One assistant Manual References TM 9-2320-387-24P Equipment Condition • Air cleaner removed (para 3-12). • Air distribution duct removed (para. 11-81). • A/C system discharged (para. 25-15). • Cooling system drained (para. 3-61). Maintenance Level Direct support NOTE Prior to removal, tag leads for installation. 1. Remove four nuts (13) and cover (12) from heater/evaporator assembly (11). 2. Disconnect three relay connectors (4) from relays (6). 3. Remove screw (20), lockwasher (19), washer (18), vehicle ground lead (17), A/C ground lead (16), A/C control module ground lead (15), and blower motor ground lead (14) from side of heater/evaporator assembly (11). Discard lockwasher (19). 4. Disconnect two leads (3) from circuit breaker (5). 5. Disconnect two A/C control module leads (1) from A/C wiring harness leads (2). 6. Remove nut (10), screw (7), and air vent control cable (9) from cable (8). 7. Remove two harness leads (28) from heater/evaporator thermostat (29). NOTE Use a container to catch antifreeze solution. 8. Loosen four clamps (21) and disconnect heater hoses (34) from body (22) and heater/evaporator assembly (11). 9. Disconnect low-pressure tube (26) from heater/evaporator assembly (11). 10. Disconnect high-pressure tube (25) from heater/evaporator assembly (11). 11. Loosen clamp (31) and remove drain hose (30) from heater/evaporator assembly (11). 12. Remove two capscrews (33) and washers (32) from heater/evaporator assembly (11). 13. Remove two nuts (23), washers (24), and spacers (27) from heater/evaporator assembly (11). 14. Remove blower motor switch connector (35) from A/C wiring harness connector (38) and blower motor fan connector (36) from vehicle wiring harness connector (37). 15. Remove heater/evaporator assembly (11) from body (22).