SkyTrak 8042 Service Manual - Manual (Page 535)

Hydraulic System
8.120 Model 8042, 10042, 10054 Legacy Rev. 10/03
b. Slave 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 slave cylinder (1) with a suitable cleaner
before inspection. 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. Place the slave cylinder (1) in a soft-jawed vise or
other acceptable holding equipment if possible.
3. Extend the rod (3) 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.
4. Using a pin spanner wrench, unscrew the head gland
(4) from the tube (2). The head gland was originally
torqued at 300-400 lb-ft (407-542 Nm), so a
considerable amount of force is required to remove it.
Carefully slide the head gland down along the rod
toward the eyelet end, away from the cylinder tube (2).
IMPORTANT: When sliding the rod and piston assembly
in the tube, prevent the threaded end of the tube from
damaging the piston (5). Keep the rod centered within
the tube to help prevent binding.
5. Carefully pull the rod (3) with all attachments straight
out of the tube (2).
6. 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.
7. Remove the o-ring (6), back-up ring (8) and o-ring
(9) from the head gland.
8. Remove the locking insert (7) 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.
MH2871
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