TM-10-5411-205-13 HMMWV S-250/G Shelter Operator, Unit and Direct Support Download
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TM 10-5411-205-13 3-9. General Repair Procedures (2) Removal (Figure 3-10) (cont). WARNING Drilling creates metal chips which may enter eyes and cause seri- ous injury. Eye protection is required. (a) Drill through head of rivnut, using same size drill used to make original hole. Counterbore in rivnut will act as a drill guide. (b) Remove head of rivnut. Figure 3-10. Removing Rivnuts. CAUTION Do not puncture opposite face sheet of panel when punching out rivnut shank. (c) Punch out shank of rivnut, using a pin punch slightly smaller than hole in structure. Punch only enough to disengage. Move rivnut aside to install new rivnut. (3) Repair. (Figure 3-11) When excessive torque is applied on screws attached on rivnuts, it may cause a rivnut to turn (spin). Table 3-4 provide the maximum torque requirement for hardware to prevent rivnut turning. To correct a turning rivnut, proceed as follows: (a) Drill a .062 (+.003, -.001) diameter hole by 1.00 inch long on the stem of the turning rivnut as shown in Figure 3-11. (b) Install a headless straight pin (Item 25, Appendix D) in hole. 3-19