TM 9-4940-568-20
4-14
4-3. DOOR/PLATFORM SUPPORT ARMS REPLACEMENT (CONT).
7
2
3
4
6
5
8
(8)
Install upper door support (7) to plate (8) with socket head screw (6), washer (5), washer (4) and slotted
nut (3). Tighten slotted nut to 120 lb-in (14 N.m) then back off slotted nut up to 1/16 turn and install
cotter pin (2).
(9)
Repeat Steps (5) through (8) for right side door support arms.
Shelter door weighs 220 lbs (100 kg) and must be supported during door/platform
support arms replacement. Use a suitable lifting device of adequate capacity to support
door for removal and installation to prevent possible injury to personnel.
(10)
Remove lifting device from door (1).
f.
Follow-On Maintenance:
Adjust door, (Para 4-4).
Lubricate support arms, (TM 9-4940-568-10).
END OF TASK
