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TM 11-5820-890-30-5
15-35. REPLACEMENT OF THREADED SCREW INSERTS. Continued
ITEM
ACTION
REMARKS
REMOVAL Continued
c. Threaded screw insert
INSTALLATION
d. Threaded screw insert
e. Thread cleaning tap (2)
f. Insertion tool
Strike extractor tool to seat blade into
threaded screw insert in hole. Keep
steady downward pressure on extractor
tool while turning it counterclockwise
until threaded screw insert is out of hole.
Discard defective threaded screw insert.
Obtain replacement threaded screw insert.
Select proper size tap. Insert and secure
in brace (3). Start carefully in hole. Use
thread cleaning tap (2) to remove all
debris from hole. Screw tap to bottom
of hole. Unscrew tap.
Using 5/64 inch hex wrench, loosen stop
collar (6) on prewinder (4) of insertion
tool. Turn handle clockwise until threaded
shaft of prewinder protrudes from end of
insertion tool to proper depth. Move stop
collar to top of tool body. While holding it
in place, position, secure, and tighten
stop collar by using 5/64 inch hex wrench.
Turn handle so threaded shaft is past
opening of tool body.
Insert location
g. Threaded screw insert (5)
h. Tang breakoff tool (7)
(1) Mounting plate assembly
(2) Catch strikes
(3) Voltage regulator (U1)
Place insert in opening of tool body so
tang end is toward prewinder tip. Turn
handle until insert protrudes one full turn
beyond the tip. Position insertion tool in
tapped hole where defective threaded
screw insert was removed. Turn handle
clockwise until insert is positioned into
hole and stop collar touches tool body.
Turn handle counterclockwise until
insertion tool is retracted. Remove tool
from hole.
Position tang breakoff tool in hole with
threaded screw insert. Place on tang.
Break off tang by pressing down on tool
until it clicks. Remove tang breakoff tool
and check for broken tang on tool end.
If tang is not there, turn connector box
over and remove broken tang from hole.
Be careful not to get metal
shavings on electronic
parts.
If insert is used with a cap-
tive screw, set prewinder
threaded shaft with an
extra 2 to 3 mm length
longer than insert. Using
depth gauge, set stop
collar against insertion tool
for proper depth setting as
follows:
Depth setting
2 mm below surface
Flush with surface
Flush with surface
15-41
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