REPLACE LOCKED-IN STUD (AVIM) (Continued)

TM 55-1520-240-23-1 1-15 REPLACE LOCKED-IN STUD (AVIM) (Continued) 1-15 3. Measure and record thickness of replacement lock ring (4). 4. Position removal tool (3) over stud (2) and against lock ring (4). Do not operate removal tool above 700 rpm. Make sure tool is against lock ring before operating. Otherwise, personal injury could result. If 700 rpm drill is not available, go to step 9. NOTE Interlock area need not be cut away to full depth. Three-quarters depth is enough. 5. Cutaway interlock area (5) between stud flange (6) and lock ring (4) with tool (3). Do not drill deeper than lock ring thickness recorded in step 3. Use several light cuts. Pull back tool between cuts to clear chips and check depth. 6. Turn and remove stud (2) and remaining part of lock ring (4) from housing (1). Use plier wrench. NOTE As stud comes out, it will lift out remaining lock ring. If it does not, use punch to collapse and remove remaining part of ring. 7. Remove tool (3) from drill or drill press. 8. Go to step 15. 1-23