TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l I 9-7. REAR BUMPER REPLACEMENT This task covers: a. Removal INITIAL SETUP: b. Installation Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Maintenance and repair shop equipment: automotive (Appendix B, Item 2) Materials/Parts Sixteen locknuts (Appendix G, Item 121) Six nut and lockwasher assemblies (Appendix G, Item 244) Two cotter pins (Appendix G, Item 38) Two cotter pins (Appendix G, Item 34) Two spring washers (Appendix G, Item 452) Personnel Required One mechanic One assistant Manual References TM 9-2320-387-24P Equipment Condition Towing pintle removed (para. 9-9). Maintenance Level Unit a. Removal 1. 2. 3. 4. 5. 6. 7. Remove four nut and lockwasher assemblies (7), capscrews (13), and trailer receptacle cover (14) from trailer receptacle (8). Discard nut and lockwasher assemblies (7). Remove two nut and lockwasher assemblies (91, capscrews (121, plate (ll), and trailer receptacle (8) from rear bumper (10). Discard nut and lockwasher assemblies (9). Remove four locknuts (231, washers (201, capscrews (191, and washers (20) from rear bumper (10) and two braces (22). Discard locknuts (23). Remove two cotter pins (l), nuts (21, and tiedown rings (16) from rear bumper (10) and two mounting brackets (3). Discard cotter pins (1). NOTE Perform step 5 on Ml113 vehicles only. Remove two cotter pins (28), nuts (271, spring washers (24), capscrews (26), and shackles (25) from rear bumper (10). Discard cotter pins (28) and spring washers (24). Remove eight locknuts (211, washers (181, capscrews (171, and washers (18) from rear bumper (10) and two mounting brackets (3). Discard locknuts (21). Remove four locknuts (41, washers (51, capscrews (15), washers (51, and rear bumper (10) from two inner mounting brackets (6). Discard locknuts (4). b. Installation 1. 2. 3. 4. Install rear bumper (10) on two inner mounting brackets (6) with four washers (5), capscrews (151, washers (51, and locknuts (4). Tighten locknuts (4) to 90 lb-ft (122 N-m). Install rear bumper (10) on two mounting brackets (3) with eight washers (181, capscrews (17), washers (18), and locknuts (21). Tighten locknuts (21) to 90 lb-ft (1.22 N-m). NOTE Perform step 3 on Ml113 vehicles only. Install two shackles (25) on rear bumper (101 with two capscrews (26), spring washers (24), and slotted nuts (27). Torque slotted nuts (27) to 15-20 lb-ft (20-27 N-m). Back off two slotted nuts (27) to align with hole in capscrews (26) and install two cotter pins (28) in slotted nuts (27). 9-8