SkyTrak 6042 Service Manual - Manual (Page 366)

Hydraulic System
8.134 Model 6042 Legacy Origin 7/02
Figure 8-91 Side Tilt Carriage Cylinder Components
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 (Fig. 8-91, 1) with a
suitable cleaner to remove dirt, debris, grease, etc.
2. If necessary, remove both grease fittings (Fig. 8-91, 2)
from the cylinder tube end and the rod end.
3. If necessary, press the self-aligning bearings
(Fig. 8-91, 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 (Fig. 8-91, 4).
4. Place the side tilt carriage cylinder (Fig. 8-91, 1) in a
soft-jawed vise or other acceptable holding
equipment if possible.
5. Slowly remove both pilot check valves (Fig. 8-91, 5)
from the side tilt carriage cylinder.
6. Extend the rod (Fig. 8-91, 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 (Fig. 8-91, 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
(Fig. 8-91, 4).
IMPORTANT: When sliding the rod and piston assembly
into the tube, prevent the threaded end of the tube from
damaging the piston (Fig. 8-91, 8). Keep the rod centered
within the tube to help prevent binding.
9. Carefully pull the rod (Fig. 8-91, 6) with all
attachments straight out of the tube (4).
10. Fasten the rod end in a soft-jawed vise, and put a
padded support below and near the threaded end of
the rod, to help prevent damage to the rod.
MT1920
Torque to
30-35 lb-ft
(41-47 Nm)
6
Apply Loctite #271 to
threads and torque to
550-650 lb-ft
(746-881 Nm)
Torque to
300-400 lb-ft
(407-542 Nm)
1
21
20
19
9
7
12
11
10
18
14
17
8
13
16
4
5
2
3
5
9
15
2
22
23
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.