TM 9-2350-277-34
INSTALL COMMANDER’S CUPOLA ARMOR SHIELDS (M113A3 AND M1064A3 ONLY) —
Continued
0088 00
5.
Drill four holes using 27/64 (11 mm) drill. Drill to a maximum depth of 1-1/4 (3 cm). Tap with a 1/2-13 UNC tap to a
minimum depth of 7/8 (22 mm).
6.
Remove locknut (1), two flat washers (2), and cap screw (3) that secure hook (4), spring (5), and two spacers (6) on
cupola hatch. Discard hook. Keep all other parts.
7.
Place new hook (4), spring (5), and two spacers (6) on cupola hatch. Secure with two flat washers (2), cap screw (3), and
locknut (1).
8.
Remove locknut (7) and flat washer (8) that secure bumper (9) and flat washers (10) to cupola hatch. Remove bumper
and washers. Keep washers. Discard locknut.
9.
Place new bumper extension bracket (11) on cupola hatch with welded end up. Secure with new cap screw (12), flat
washer (13), and locknut (14).
10. Use flat washers (10), as needed, to compress bumper 1/4 inch (6 mm) when cover is open and latched. Place flat
washers (10) and bumper (9) on bracket (11). Secure with flat washer (8) and new locknut (7).
NOTE
Gun shields are large and bulky. Get an assistant to help you.
11. Install curved doors (15) in guide channels of shields (16) and (17). There are two doors in each shield. Install four clips
(18) to secure doors open. Deform clips to turn freely around loop on doors.
0088 00-2
