TM 10-5411-205-133-9.General Repair Procedures(2) Removal (Figure 3-10)(cont).WARNINGDrilling 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 originalhole. Counterbore in rivnut will act as a drill guide.(b) Remove head of rivnut.Figure 3-10. Removing Rivnuts.CAUTIONDo not puncture opposite face sheet of panel when punching outr i v n u t s h a n k.(c)Punch out shank of rivnut, using a pin punch slightly smaller than hole instructure. Punch only enough to disengage. Move rivnut aside to installnew rivnut.(3) Repair. (Figure 3-11) When excessive torque is applied on screws attached onrivnuts, it may cause a rivnut to turn (spin). Table 3-4 provide the maximumtorque requirement for hardware to prevent rivnut turning. To correct aturning rivnut, proceed as follows:(a) Drill a .062 (+.003, -.001) diameter hole by 1.00 inch long on the stem ofthe turning rivnut as shown in Figure 3-11.(b) Install a headless straight pin (Item 25, Appendix D) in hole.3-19
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