(3) Tap broken stud or screw and back out.
(4) If stud or screw can not be removed, repair stud or screw (para. a, above).
c. Repair of damaged threaded insert.
(1) Using proper tap and lubricant, chase insert threads.
(2) If threads can not be restored or excessive damage exists, replace damaged inserts as instructed in para. d,
d. Removing damaged threaded insert. (Refer to Figure 2-4.)
Do not damage threads of tapped hole when using extraction tool.
Remove inserts from end of tapped hole that the insert is closest to. Threads in
tapped hole can be damaged.
All sizes for tools and threaded inserts depend on original size.
(1) Place extraction tool (1) in insert (2). Tap top of extraction tool.
(2) Maintaining a steady downward pressure, turn tool (1) to the left. Remove insert (2).
(3) If insert (2) does not come out of tapped hole, go to step (4). If insert does come out of tapped hole, go to step (8).
(4) Insert scribe (3) between end of insert (2) and tapped hole.
(5) Work end of insert (2) away from tapped hole and form a tang equal in length to diameter of insert
(6) Using needle nose pliers (4), grasp tang.
(7) Turn insert (2) to the left until insert is out of tapped hole. Discard insert.
(8) Lubricate finishing tap (5).
Figure 2-4. Removing Damaged Threaded Insert