TM 10-4610-241-24
TO 40W4-13-42
3-5.
THREADED INSERTS AND HELCOILS.
This task consists of:
a.
Remove Threaded Inserts
b.
Install Helicoil Inserts
c.
Remove Damaged Helicoil Inserts
INITIAL SET-UP :
Tools Required
General Mechanics Tool Kit (Appendix B, Section III, Item 4).
Vernier Caliper (Appendix B, Section III, Item 3).
Tap Wrench (Appendix B, Section III, Item 3).
Portable Electric Drill (Appendix B, Section III, Item 3).
Standard Insert Repair Kit (Appendix B, Section III, Item 3).
Oversize Insert Repair Kit (Appendix B, Section III, Item 3).
Swage Tool Stop (Appendix B, Section III, Item 3).
Helicoil Repair Kit (Appendix B, Section III, Item 3).
Machinist Scriber (Appendix B, Section III, Item 3).
Tap Handle (Appendix B, Section III, Items 3).
Depth Micrometer (Appendix B, Section III, Item 3).
Goggles (Appendix B, Section III, Item 3).
Materials/Parts Required
Solvent, Drycleaning (Appendix C, Section II, Item 18).
Oil, Lubricating (Appendix, C, Section II, Item 13).
Rags, Wiping (Appendix C, Section II, Item 14).
Rivnuts (TM 10-4610-241-24P)
General Safety Instructions
WARNING
Using compressed air can be dangerous. Wear goggles while using
compressed air.
a.
Remove Threaded Inserts.
(1)
Inspect all threaded parts for burrs and stripped or damaged threads.
NOTE
If possible, chase threads with used tap or die. New tap may cut
oversize, while old die may cut undersize.
(2)
Replace all parts that have stripped threads. Replace parts that cannot be repaired by chasing threads
with used tap or die. Replace parts that cannot be repaired by installing helicoil inserts.
(3)
Remove tight broken studs or screws as follows:
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