TM 5-5420-234-14&P
6-2.
HOOK ARM/MAIN FRAME CYLINDER REPAIR (continued).
c. Assembly.
NOTE
Lubricate O-rings, backup rings, wear rings, seals, and wipers before
installing.
Cup side of backup ring should face O-ring.
Position O-rings, backup rings, wear rings, seals, and wipers in same location
as removed.
(1) Apply lubricating oil to backup ring (17), preformed
13 14
15
12
packing (16), two wear rings (15), step seal assembly
(14), rod seal (13), and wiper (12).
17
16
16
14
17
15
12
13
4
11
(2) Install backup ring (17), preformed packing
(16), two wear rings (15), step seal
assembly (preformed packing first, then
step seal) (14), rod seal (13), and wiper (12)
on rod bearing (4).
(3) Install lube fitting (18) on cylinder (1).
(4) Apply lubricating oil to piston seal
assembly (11) and two wear rings (10).
5
(5) Install piston seal assembly (11) and two
wear rings (10) on piston (5).
10
6-7
