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 TM 10-3930-660-24-2
BOOM EXTEND CYLINDER MAINTENANCE - CONTINUED
0309 00
ASSEMBLY - CONTINUED
4.
Lubricate piston (49) inner diameter with clean lubricating oil. Install new O-ring (50) inside bore of piston (49).
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.
5.
Using a cleaning solvent and clean rag to clean threads on rod (42) and new nut (48).
6.
Slide piston (49) onto rod (42).
50
7.
Apply loctite on threads of rod (42) and new nut (48).
46
49
Install new nut (48) on rod (42).
47
8.
Place rod (42) and piston (49) assembly on suitable
46
supports to prevent damage during assembly.
48
9.
Install two new wear rings (46) and one new seal (47)
on piston (49). Position wear rings so that gaps are 180
degrees apart.
CAUTION
Use care when installing rod and piston
assembly. Keep rod in line with barrel to
prevent binding. Failure to follow this pre-
caution will cause part damage.
409-1449
10.
Lubricate barrel (44) inner diameter, piston (49) out-
42
side diameter and gland (43) outside diameter with
clean hydraulic oil.
11.
Position rod (42) and piston (49) assembly in barrel
(44).
0309 00-6
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