6
8
7
4
5
7
3
3
1
2
3
TM 9-4940-568-20
4-10
4-3. DOOR/PLATFORM SUPPORT ARMS REPLACEMENT (CONT).
(3)
Replace all damaged parts.
(4)
Coat both sides of support arm gear teeth area and matching area on shelter wall and plate with grease.
d. Assembly.
NOTE
The following procedures are
identical for all upper and lower
support arms.
Position setscrews as noted
during disassembly.
(1)
Install setscrew (8) and jam nut (7) on upper
support arm (3).
(2)
Install safety catch (6), washer (5), and
screw (4) on upper support arm (3).
(3)
Install chain (2) and safety catch pin (1) on
upper support arm (3).
