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TM 10-3930-638-24&P
3-30. HYDRAULIC LIFT SYSTEM MAINTENANCE (cont)
d. Rotation Cylinder Assembly (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
DISASSEMBLY
WARNING
Dry cleaning solvent (P-D-680), used to clean parts is toxic and
flammable. Wear protective goggles and gloves and use only in a
well ventilated area. Avoid contact with skin, eyes, and clothes
and don’t breathe vapors, Do not use near open flame or exces-
sive heat and don’t smoke when using it. Failure to do so could
cause serious injury. If you become dizzy while using cleaning
solvent, get fresh air immediately, and get medical attention. If
contact with skin or clothes is made, flush with large amounts of
water. If contact with eyes is made, wash eyes with water immedi-
ately, and obtain medical aid immediately.
2
Rotation
a. Rotation cylinder
Clean all exterior
Use cleaning solvent P-D-680
cylinder
assembly (8)
surfaces
assembly (8)
b. Two lubrication
Remove
fittings (9)
c. Gland assembly (17)
Loosen
d. Rod (24), gland as-
Remove as an
sembly (17), and
assembly
piston assembly (12)
e. Cap screw (10) and
Remove
washer (11)
f. Piston assembly (12)
Remove
g. Gland assembly (17)
Remove
3
Piston assembly
a. Wear ring (13)
Remove and
(12)
discard
b. Sealing ring (14)
Remove and
discard
c. O-ring (15)
Remove and
discard
4
Gland assembly
a. Plug (18)
Remove only if
(17)
damaged
b. O-ring (19)
Remove and
discard
c. Back-up ring (20)
Remove and
discard
d. Wiper(21)
Remove and
discard
e. Seal (22)
Remove and
discard
3-234
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