TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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9-10. REAR BUMPER REPLACEMENT (Cont’d) 2. Install rear bumper (12) on inner mounting brackets (8) with four washers (7), capscrews (17), washers (7), and locknuts (6). Tighten locknuts (6) to 90 lb-ft (122 N•m). 3. Install rear bumper (12) on mounting brackets (5) with four washers (4), capscrews (18), washers (4), and locknuts (3). Tighten locknuts (3) to 90 lb-ft (122 N•m). NOTE Perform steps 4 and 5 for M997A2, M1025A2, M1035A2, M1043A2, M1045A2, and M1097A2 vehicles only. 4. Secure rear bumper (12) to two mounting brackets (5) with eight washers (26), capscrews (25), washers (26), and locknuts (27). Tighten locknuts (27) to 90 lb-ft (122 N•m). 5. Install two tiedown rings (24) on rear bumper (12) and two brackets (5) with two nuts (23). Tighten nuts (23) to 16 lb-ft (22 N•m), back off to the nearest cotter pin slot, and install two cotter pins (22). 6. Install two tiedown brackets (19) on rear bumper (12) with four washers (4), capscrews (18), washers (4), and locknuts (3). Tighten locknuts (3) to 90 lb-ft (122 N•m). 7. Install rear bumper (12) on braces (21) with four washers (2), capscrews (20), washers (2), and locknuts (1). Tighten locknuts (1) to 90 lb-ft (122 N•m). 8. Position trailer receptacle (10) through rear bumper (12) and install plate (13) and trailer receptacle (10) on rear bumper (12) with two capscrews (14) and assembled locknuts (11). Tighten assembled locknuts (11) to 8 lb-ft (11 N•m). 9. Install trailer receptacle cover (16) on plate (13) and rear bumper (12) with four capscrews (15) and assembled locknuts (9). Tighten assembled locknuts (9) to 8 lb-ft (11 N• m). TM 9-2320-280-20-2 Change 3 9-13 FOLLOW-ON TASK: Install towing pintle (para. 9-12).