TM 9-2320-280-20-2
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
Manual References
M996, M996A1, M997, M997A1, M997A2
TM 9-2320-280-10
TM 9-2320-280-24P
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Materials/Parts
Nut and lockwasher assembly
(Appendix G, Item 147)
Equipment Condition
Battery ground cable disconnected (para. 4-73).
NOTE
Harness duct replacement for M996, M996A1, M997, M997A1, and M997A2
are basically the same. This procedure covers M996 and M996A1 models only.
a. Spotlight Branch Duct Removal
1. Remove four screws (12) from duct (2) and ceiling (4) and pull duct (2) away from ceiling (4) for
access to spotlight harness clamp (5).
2. Remove screw (11), nut and lockwasher assembly (6) and spotlight wiring clamp (5) from duct (2).
Discard nut and lockwasher assembly (6).
b. Main Duct Removal
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 (3) for damage. Replace if damaged.
c. Main Duct Installation
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)
d. Spotlight Branch Duct Installation
1. Install spotlight harness clamp (5) on duct (2) with screw (11) and nut and lockwasher assembly (6).
2. Install duct (2) on ceiling (4) with four screws (12).
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