TM 9-2350-222-10-3
MAINTAIN MAIN GUN (CHECK AND SHIM OBTURATOR PAD) - Continued
WARNING
Do not fire main gun while you are using pre-
liminary shims.
9. Push in on plunger (D)
and pull BREECH OPER-
ATING HANDLE (E)
back and down until
breech is locked open.
Return handle to locked
position.
10. Remove firing contact rod
11. Using spanner wrench
(J), loosen spindle nut
(K) two complete turns.
12. Push forward on nut (K).
Insert the 0.005 inch
preliminary shim (C)
between obturator seat
(L) and breechblock (M).
13. Using spanner wrench
(J), tighten spindle
nut (K) until snug.
3-201