TM 9-2320-280-20-3
11-64. GUNNER’S PLATFORM ASSEMBLY MAINTENANCE (Cont’d)
I
b. Assembly
1.
2.
3.
4.
5.
Install two guide pin bolts (17) on inner risers (4) with two washers (16) and nuts (15). Tighten
nuts (15) to 10-15 lb-ft (14-20 Nom).
NOTE
Make sure heads of guide pin bolts are installed inward, facing
each other.
Install inner risers (4) on stiffener plate (1) with four capscrews (14), washers (18), and nuts (19).
Tighten nuts (19) to 6 lb-ft (8 N-m).
Install two pin-and-lanyard assemblies (8) on outer risers (12), on same side as pin receptacles (13),
with two capscrews (9), washers (7), and nuts (6). Tighten nuts (6) to 6 lb-ft (8 N-m).
Install two spacers (5), outer risers (12), and latches (11) on inner risers (4) ensuring pin
receptacles (13) are facing outward, with two capscrews (10), washers (3), and nuts (2). Tighten
nuts (2) to 6 lb-ft (8 N.m), then back off nuts 1/4 to 1/2 turn to allow outer risers (12) to pivot freely.
Install guide pin bolts (17) on front mounting bracket (24) tracks, and install outer risers (12) on
rear mounting bracket (21) with two shoulder bolts (20), washers (22), and nuts (23). Tighten
nuts (23) to 10-15 lb-ft (14-20 N-m).
11-88
