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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
INSPECTION/REPAIR (cont)
9
Cylinder (27)
Inspect
Replace if deeply grooved, scored or nicked,
or damaged. Remove nicks or scratches
inside cylinder with medium grit emery
cloth polishing with a rotary motion
10
Bushing (26 and 29)
Inspect
Replace if damaged, worn, cracked, or
split
11
All other parts
Inspect
Replace if damaged, cracked, split, grooved
or scored
REASSEMBLY
12
Cylinder (27)
a. Bushing (29)
Install
Use 1-5/8 inches diameter sleeve; install
until centered
b. Two retaining rings (28) Install
13
Rod (24)
a. Bushing (26)
Install
Use 1-5/8 inches diameter sleeve; install
until centered
b. Two retaining rings (25) Install
14
Gland (23)
a. Seal (22)
Install
Seal lip towards cylinder
b. Wiper (21)
Install
Lip towards rod
c. Back-up ring (20)
Install
Curved side towards O-ring (19)
d. O-ring (19)
Install
e. Plug (18)
Install
15
Piston (16)
a. O-ring (15)
Install
b. Sealing ring (14)
Install
On O-ring (15)
c. Wear ring (13)
Install
CAUTION
Use care when performing following step not to damage parts.
16
Rod (24)
a. Gland assembly (17)
Lubricate and
Use clean hydraulic oil (refer to current
slide on rod
lubrication order)
b. Piston assembly (12)
Slide on rod
Small diameter recess towards rod (24)
c. Washer (11) and cap
Install
Tighten to 90-100 pounds foot torque
screw (10)
d. Sealing ring (14)
Lubricate
Use clean hydraulic oil (refer to current
lubrication order)
3-236
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