TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
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12-133. FRONT LOWER RADIO RACK REPLACEMENT 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 Six locknuts (Appendix G, Item 70) Four locknuts (Appendix G, Item 128) Manual References TM 9-2320-280-24P 1. Remove two capscrews (2) and washers (3) from upper radio rack (1) and plenum (4). 2. Remove two locknuts (6), washers (5), and screws (12) from lower radio rack (8) and upper radio rack (1). Discard locknuts (6). 3. Remove two locknuts (11), washers (10), capscrews (7), and upper radio rack (1) from mounting brackets (9). Discard locknuts (11). 4. Remove four locknuts (19), washers (14), capscrews (13), washers (14), and mounting brackets (9) from lower radio rack (8). Discard locknuts (19). 5. Remove two locknuts (18), washers (15), capscrews (16), and lower radio rack (8) from mounting brackets (17). Discard locknuts (18). 1. Install lower radio rack (8) on mounting brackets (17) with two capscrews (16), washers (15), and locknuts (18). Tighten locknuts (18) to 8-10 lb-ft (11-14 N•m). 2. Install two mounting brackets (9) on lower radio rack (8) with four washers (14), capscrews (13), washers (14), and locknuts (19). Finger tighten locknuts (19). 3. Install upper radio rack (1) on mounting brackets (9) with two capscrews (7), washers (10), and locknuts (11). Tighten locknuts (11) to 8-10 lb-ft (11-14 N•m). 4. Install upper radio rack (1) on lower radio rack (8) with two screws (12), washers (5), and locknuts (6). 5. Install upper radio rack (1) on plenum (4) with two washers (3) and capscrews (2). Tighten capscrews (2) to 6 lb-ft (8 N•m). 6. Tighten four locknuts (19) on mounting brackets (9) and lower radio rack (8). b. Installation a. Removal TM 9-2320-280-20-3 12-206 Change 2