SkyTrak 8042 Service Manual - Manual (Page 549)

Hydraulic System
8.134 Model 8042, 10042, 10054 Legacy Rev. 10/03
e. Lift/Lower Cylinder Assembly
Note: Follow Section 8.13.3, “General Cylinder Assembly
Instructions.”
1. Install a new small oiled o-ring (1) into the groove in
the end of the rod (2).
2. Install the capped T-seal (3) and the precision
wearband (4) onto the piston (5).
Note: The T-seal actually consists of four components: a
wide, flexible inner band, the flexible T-seal band itself,
and two supportive split caps that mount on either side of
the “T” itself.
3. Install the precision wearbands (6) into the forward
end of the head gland (7). Install the deep Z-seal
with back-up (8) orienting the edge (9). Install the
sealed, outside diameter heavy-duty rod wiper (10).
The wiper lip (11) should be toward the outer end of
the head gland and the seal lips toward the inner
end of the head gland. Use tools that will not
damage the seals.
4. Install a new oiled o-ring (12) and back-up ring (13)
onto the head gland (7).
5. Fasten the rear of the rod 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.
6. Carefully slide the head gland (7) onto the rod (2).
Slide the rod spacer (14) onto the rod.
7. Carefully slide the piston (5) onto the rod (2).
8. Apply Loctite Threadlocker #271 (red) to the threads
of the locknut (15). Thread the locknut onto the rod
(2). Torque the nut to 1735-1885 lb-ft (2352-2556
Nm).
9. Place new nylon balls (16) into the threaded holes of
the locknut (15). Insert the setscrews (17) into the
holes and tighten until the nylon balls are deformed
into the threads of the rod.
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