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TM 5-4320-304-14
TM 08922A-14/1
5-14. lNSPECT/REPLACE/REPAIR FRAME ASSEMBLY (FRAME, RAILS, AND
SHOCK MOUNTS) (Continued)
REPAIR:
1
2
3
4
5
6
Remove helicoil insert (8) from frame (7)
by using a scribe or other pointed instru-
ment. Pry the last thread of helicoil insert
in toward center of tapped hole. Grasp
thread with needlenosed pliers. Remove
damaged helicoil insert by threading out
of hole.
Chase threaded hole using appropriate
size tap.
Dry cleaning solvent P-D-680 (safety or Stoddard’s Solvent)
is potentially dangerous. Avoid repeated and prolonged
breathing of vapors and skin contact with the liquid. Do
not use near open flame, arcing equipment, or other igni-
tion sources. Always wear eye protection and protective
clothing. The flash point of P-D-680 is 100° to 138°F (38°
to 59°C).
Death or serious injury could occur if compressed air is
directed against the skin. Do not use compressed air for
cleaning or drying unless the pressure is/has been reduced
to 30 psi (2.06 bar) or less. When working with com-
pressed air always use chip guards, eye protection, and other
personal protective equipment.
Using dry cleaning solvent and a stiff-bristled brush, clean threaded hole thoroughly.
Using clean compressed air at 30 psi (2.06 bar) maximum discharge pressure, blow out threaded
hole to make sure that all solvent has been removed and no particles are left in the hole.
If frame has broken welds, chip away all Ioose material before reworking welds.
Coat new helicoil insert (1) with zinc chromate primer.
5-48
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