SkyTrak 8042 Service Manual - Manual (Page 557)

Hydraulic System
8.142 Model 8042, 10042, 10054 Legacy Rev. 10/03
For S/N 13198 thru 19356
b. Stabilizer 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 stabilizer cylinder (1) with a suitable
cleaner. Remove all dirt, debris and grease from the
cylinder.
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 (2).
2. Secure the stabilizer cylinder (1) in a soft-jawed vise
or other holding device, and place a suitable
container beneath the cylinder to catch hydraulic
fluid run-off.
3. Slowly remove the two pilot-operated check valves (3),
the pressure reducing valve (4) and the five solenoid
valves (5 and 6) on the manifold block (7) if
replacement of any of these components is required.
Label the solenoid valves with the locations stamped
on the manifold. Remove the solenoid cartridges
from the manifold.
4. Remove the locking insert (8) from its hole in the
head gland threads. Pry or drill out the insert as
required. DO NOT damage the head gland threads. A
new locking insert will be required for reassembly.
Note: The head gland (9) is installed at a torque of 300-
400 lb-ft (407-542 Nm). Use suitable tools to remove the
head gland.
MH2900
~
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
3
WARNING:
Significant pressure may be
trapped inside the cylinder. Exercise caution
when removing a counterbalance valve or a pilot-
operated check valve from a cylinder. Escaping
hydraulic fluid under pressure can penetrate the
skin, causing death or serious injury.