TM 10-5411-201-14T.O. 35E4-178-14-42.THREADED INSERTS REPLACEMENT.NOTEInserts installed in extrusions are not potted.Forremoval of these inserts, perform steps a and b only.Knock out insert and replace with same type.a.Depending on insert size, select a drill bit in size range listedbelow.Insert Thread SizeDrill Size Rangeinches (mm)10-327/16-15/32 (11/12.4)1/4-2817/32-21/32 (13.5/16/7)5/16-2439/64-21/32 (15.5/16.7)3/8-2443/64-23/32 (17/18.3)WARNINGWear safety goggles for eyeagainst flying chips.protectionb.Using selected drill bit, drill headflange from insert.c.Drill small holes around insert body inpotting compound to approximate depth of insert.Take care not to damage area around insertbeyond hole diameter of step above.Do notdrill through to opposite skin.d.Install bolt of corresponding threadsize in insert.e.Use wrench to break insert loose.f.Install bolt end in a hand drill motor.g.Spin loose insert to build up heat whichwill allow insert to be removed from hole.h.Remove loose chips and clean out hole.NOTEReplacement insert is a spool type potted insert.4-180
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