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TM 9-2350-287-34
2-12. PAINTING INSTRUCTIONS.
Refer to TM 43-0139 and TB 43-0209 for information on painting.
2-13. THREAD INSERT REPAIR AND REPLACEMENT.
When determined feasible by inspection, damaged screw thread inserts should be repaired by rethreading using a
thread restorer, tap and die, or by chasing on a lathe.
If a screw thread insert is unserviceable, remove the insert by drilling out the material between the locking keys. Bend
the keys inward, and remove damaged insert using an easy-out or other extractor tool.
Use a thread chaser on the tapped hole.
Install the new screw thread insert between 0.010 and 0.030 inch (0.254 and 0.762 mm) below top of tapped hole. Lock
screw thread insert in place by driving locking keys down between the tapped hole and screw thread insert, flush with
mounting surface.
If threads in the tapped hole are unserviceable, fill-weld the old tapped hole in accordance with TM 9-237. Then drill
and tap new threaded hole to its original size using the information in Table 2-1
Use of oversized inserts is not recommended.
Table 2-1. Thread Inserts: Drill Size and Depth
2-5
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