REPAIR COMMANDERS CUPOLA COVER HINGES (M113A3, M1059A3, M1064A3, AND
M58 ONLY) Continued
Use a disc sander to sand chipped area smooth and remove any hard coating from weld area.
Clamp or tack weld new hinge(s) (1), (2), or (3) on cover (4). Set cover on commanders cupola. Check alignment of
cover hinges with hinges on cupola.
Make sure hinges are aligned and spaced as shown.
Weld hinges to cover. See TM 9-237. Use electrode type 5356.
If hinge (3) has been replaced, weld in a new torsion bar cover (5).