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 TM 10-3930-660-24-2
BOOM HOIST CYLINDERS MAINTENANCE - CONTINUED
0311 00
ASSEMBLY - CONTINUED
WARNING
Solvent cleaning compound, MIL-PRF-680 Type III is an environmentally compliant and low toxic mate-
rial. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in well-ven-
tilated areas. Keep away from open flames and other sources of ignition.
9.
Use cleaning solvent and clean rag to clean threads on
10
rod (8) and nut (14).
1
2
10.
Slide piston (15) onto rod (8).
5
3
7
6
11.
Apply loctite on threads of rod (8) and nut (14). Install
nut (14) on rod (8).
4
12.
Place rod (8) and piston (15) assembly on suitable
17
supports to prevent damage during assembly.
16
12
13.
Install two wear rings (12) and one new seal (13) on
15
piston (15). Position wear rings so that gaps are 180
13
degrees apart.
12
14
CAUTION
Use care when installing rod and piston
assembly. Keep rod in line with cylinder
tube to prevent binding. Failure to follow
this precaution will cause part damage.
9
14.
Lubricate cylinder tube (10) inner diameter, piston
11
8
409-1462
(15) outside diameter and gland (9) outside diameter
with clean lubricating oil.
15.
Position rod (8) and piston (15) assembly in cylinder tube (10).
NOTE
Tighten gland so that it is flush with end of cylinder tube. Do not overtighten gland.
16.
Tighten gland (9) onto cylinder tube (10).
17.
Install new back-up rings (2 and 3), two new back-up rings (4) and three new O-rings (5 thru 7) on counterbalance valve
(1).
18.
Install counterbalance valve (1).
19.
Install boom hoist cylinder (WP 0201 00).
20.
Operate boom hoist, check for leaks and proper operation (TM 10-3930-660-10).
END OF WORK PACKAGE
0311 00-5
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