SkyTrak 8042 Service Manual - Manual (Page 585)

Hydraulic System
8.170 Model 8042, 10042, 10054 Legacy Rev. 10/03
b. Side Tilt Carriage Cylinder Disassembly
Note: An additional o-ring may be included at the base
of the cylinder rod. This additional o-ring may be
discarded, as it served only in a temporarily protective
role.
1. Clean the side tilt carriage cylinder (1) with a suitable
cleaner to remove dirt, debris, grease, etc.
2. If necessary, remove both grease fittings (2) from the
cylinder tube end and the rod end.
3. If necessary, press the self-aligning bearings (3)
from the cylinder tube and rod ends.
IMPORTANT: Avoid using excess force when clamping
the cylinder in a vise. Apply only enough force to hold the
cylinder securely. Excessive force can damage the
cylinder tube (4).
4. Place the side tilt carriage cylinder (1) in a soft-jawed
vise or other acceptable holding equipment if
possible.
5. Slowly remove both pilot check valves (5) from the
side tilt carriage cylinder.
6. Extend the rod (6) to allow access to the base of the
cylinder.
IMPORTANT: Protect the finish on the rod at all times.
Damage to the surface of the rod can cause seal failure.
7. Using a pin spanner wrench, unscrew the head
gland (7) from the tube (4). The head gland was
originally torqued to 300-400 lb-ft (407-542 Nm), so
a considerable amount of force is required.
8. Carefully slide the head gland down along the rod
toward the eyelet end, away from the cylinder tube
(4).
MT1921
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WARNING:
Significant pressure may be
trapped inside the cylinder. Exercise caution
when removing a pilot-operated check valve
from a cylinder. Escaping hydraulic fluid under
pressure can penetrate the skin, causing death
or serious injury.