TM 9-2350-222-10-3
MAINTAIN MAIN GUN (CHECK AND SHIM OBTURATOR PAD) - Continued
To Install Permanent Shims:
NOTE
You have six permanent shims (A). The sizes
are 0.004, 0.006, 0.008, 0.010, 0.015 and 0.020
inches. You may have to use a combination of
these shims to obtain the correct thickness.
19. Repeat step 11. Remove preliminary shim or shims used and
record their thickness.
20. Remove breechblock (page 3-174).
21. Disassemble breechblock (page 3-178).
22. Using correct thickness of permanent shim or shims, assemble
breechblock (page 3-180).
23. Install breechblock (page 3-184).
24. Look to see if key
(N) fits into slot (P)
as shown.
q If key is in slot,
continue starting
with step 25.
q If key is not in slot.
notify organizational
maintenance.
WARNING
If key is not in slot, do not fire gun.
TA133033
3-203
