TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
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This task covers: a. Removal b. Installation INITIAL SETUP: Applicable Models M998, M998A1, M1038, M1038A1 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Adhesive (Appendix C, Item 7) Two lockwashers (Appendix G, Item 178) Lockwasher (Appendix G, Item 189) Tiedown strap (Appendix G, Item 309) Tiedown strap (Appendix G, Item 313) Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition Battery ground cable disconnected (para. 4-73). a. Removal TM 9-2320-280-20-3 12-146 Change 2 NOTE • Depending on what kits are installed on the vehicle, there may be unidentified leads on the shunt stud and power stud. These leads must remain on the studs. • Prior to removal, tag leads for installation. 1. Remove nut (6), lockwasher (7), fuel pump ground lead 799B (10) and lead 2A (8) from shunt stud (9). Discard lockwasher (7). 2. Remove nut (15), lockwasher (14), starter cable (13), and lead 1A (12) from power stud (11). Discard lockwasher (14). 3. Disconnect lead FP (1) from adapter (2). 4. Remove tiedown strap (4) and heater wiring harness (3) from transmission vacuum line (5). Discard tiedown strap (4). 5. Disconnect cannon plug (25) from control box inner shell (27). 6. Remove two screws (26) and control box inner shell (27) from outer shell (28). 7. Remove crown nut (19), nut (20), lockwasher (16), capscrew (24), ground lead 2C (18), and ground lead (17) from angle bracket (29). Discard lockwasher (16). 8. Disconnect lead 1C (23) from control box lead 400 (22). 9. Remove tiedown strap (21) from ground lead 2C (18), ground lead (17), control box lead 400 (22), and heater wiring harness (3). Discard tiedown strap (21). 10. Disconnect lead 2B (31) from lead 2A (30). 11. Disconnect lead 1B (36) from circuit breaker (35). 12. Disconnect cannon plug (32) from heater (33) and remove heater wiring harness (3). 13. Remove plastic sleeve (34) from heater wiring harness (3). 12-101. TROOP/CARGO WINTERIZATION HEATER WIRING HARNESS REPLACEMENT