2-74 Published 08-25-09, Control # 077-04
HYDRAULIC SYSTEM RT9130E SERVICE MANUAL
AXLE OSCILLATION LOCKOUT CYLINDER
Description
The two oscillation lockout cylinders (Figure 2-44) each have
177.8 mm (7 inch) diameter bores. The retracted length of
each cylinder is 671.6 mm (26.31 inches) from the center of
the lug holes to the center of the barrel bushing. The
extended length of each cylinder from the center of the lug
holes to the center of the barrel bushing is 866.1 mm (34
inches). Its stroke is 193.5 mm (7.62 inches). A wiper ring
prevents foreign material from entering each cylinder. O-
rings and other seals prevent internal and external leakage.
The cylinder weighs approximately 87.1 kg (192.0 pounds).
Maintenance
Disassembly
NOTE: Any maintenance requiring disassembly of the
cylinder should include replacement of all cylinder
seals.
1. Using a chain wrench, unscrew the head from the barrel.
2. Remove the rod and attached parts from the barrel.
NOTE: Cover the barrel opening to avoid contamination.
3. Remove the seal and wear rings from the outside of the
piston.
NOTE: Arranging discarded seals and rings in the order of
disassembly will aid in installation of new seals and
rings. Pay attention to how each seal and ring is
installed to avoid installing replacement seals and
rings improperly.
4. Remove the head from the rod. Remove the o-ring and
backup ring from the outside of the head. Remove the
wear rings, seal and wiper ring from the inside of the
head.
Inspection
1. Clean all parts with solvent and dry with compressed air.
Inspect all parts for serviceability.
2. Inspect the barrel carefully for scoring. If barrel is
scored, it must be repaired or replaced.
3. Check rod’s piston area for damage. If it is damaged,
determine if it can be repaired or must be replaced.
4. Inspect rod for straightness. Determine if it can be
straightened or must be replaced.
5. Stone out minor blemishes and polish with a fine crocus
cloth.
6. Clean with solvent and dry with compressed air any
parts that have been stoned and polished.
Assembly
NOTE: Lubricate seals and rings with clean hydraulic oil.
1. Install the replacement wiper ring, wear rings, and seal,
in the inside of the head.
2. Install the replacement o-ring and the backup ring on the
outside of the head.
3. Lubricate the rod with clean hydraulic oil.
DANGER
Do not use air pressure to remove the rod. Use only a
source of controlled hydraulic oil pressure if the rod is
hard to remove.
CAUTION
Exercise extreme care when handling or setting down the
rod. Do not damage the chrome surface.
CAUTION
When removing seals and rings, avoid scratching the
grooved and gland surfaces.
CAUTION
Before installing new seals and rings, clean all surfaces
and carefully remove burrs and nicks. Parts displaying
excessive wear or damage should be replaced.
CAUTION
When installing new seals and rings, avoid stretching
seals or scratching the grooved or gland surfaces. Make
sure parts are clean before and during assembly. Make
sure seals and rings are installed in the proper order.
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