TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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4-103. WIRING HARNESS DUCT ASSEMBLY REPLACEMENT This task covers: a. Spotlight Branch Duct Removal c. Main Duct Installation b. Main Duct Removal d. Spotlight Branch Duct Installation INITIAL SETUP: Applicable Models M996, M996A1, M997, M997A1, M997A2 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Manual References TM 9-2320-280-10 TM 9-2320-280-24P Equipment Condition Battery ground cable disconnected (para. 4-73). TM 9-2320-280-20-2 4-232 Change 3 NOTE Harness duct replacement for M996, M996A1, M997, M997A1, and M997A2 are basically the same. This procedure covers M996 and M996A1 models only. 1. Remove four screws (12) from duct (2), clamp (3), and ceiling (4) and pull duct (2) away from ceiling (4) for access to spotlight harness clamp (5). 2. Remove screw (11), nut (6), and spotlight wiring clamp (5) from duct (2). NOTE • Spotlight branch duct must be removed before removing main duct. Main duct must be installed before installing spotlight branch duct. • Prior to removal, tag leads for installation. 1. Remove ten screws (8) from duct (7) and ceiling (4) and pull duct (7) away for access to wiring harness leads (1). 2. Disconnect six light assembly leads (9) from wiring harness leads (1) and remove duct (7). 3. Remove two ceiling lights (10) and blackout light (13) (para. 4-87). 4. Inspect grommet (11.1) for damage. Replace if damaged. 1. Install two ceiling lights (10) and blackout light (13) (para. 4-87). 2. Connect six light assembly leads (9) to wiring harness leads (1). 3. Install duct (7) on ceiling (4) with ten screws (8) 1. Install spotlight harness clamp (5) on duct (2) with screw (11) and nut (6). 2. Install duct (2) and clamp (3) on ceiling (4) with four screws (12). d. Spotlight Branch Duct Installation c. Main Duct Installation b. Main Duct Removal a. Spotlight Branch Duct Removal