3-25. THREADED SCREW INSERT REPLACEMENT PROCEDURE. Continued
b. Thread cleaning tap (2)
Select proper size tap. Insert and se-
c. Prewinder (4)
cure in brace (3). Start carefully in
hole. Screw tap to bottom of hole.
Loosen stop collar (6) with hex wrench.
If insert is used with
Extend threaded shaft beyond end of
a captive screw, set
d. Tang breakoff tool (7)
prewinder one thread longer than insert.
prewinder with an extra
Move stop collar to top of tool body and
2 to 3 mm length.
tighten. Retract threaded shaft. Place
insert in prewinder with tang end toward
prewinder tip. Rotate shaft until insert
projects beyond the tip one full turn.
Place tip in hole. Screw insert into hole
until stop collar touches the tool body.
Place on tang. Break off tang by pressing
down on tool. Remove tang breakoff tool.
Remove broken tang from hole.
Figure 3-11. Threaded Screw Insert Replacement