SkyTrak 8042 Service Manual - Manual (Page 559)

Hydraulic System
8.144 Model 8042, 10042, 10054 Legacy Rev. 10/03
4. Install new oiled o-ring (18), back-up ring (17) and
oiled o-ring (16) onto the head gland (9). If the back-
up ring is not flat on both sides, the side with the arc
must be toward the o-ring.
5. Install the head gland (9) onto the rod (10). If
necessary, use a soft hammer to drive the head
gland onto the rod.
6. Install the new small oiled o-ring (13) into the piston
(12).
7. Install the capped T-seal (15) onto the piston (12).
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” seal band.
8. Install the two precision wearbands (14) onto the
piston (12).
9. Install the piston (12) onto the rod (10).
10. Secure the rod eyelet in a soft-jawed vise or other
suitable holding device. Place a padded support
below the threaded end of the rod to help prevent
damaging the rod.
11. Apply Loctite Primer “T” and Threadlocker #271
(red) to a new locknut (11) in accordance with Loctite
instructions. Install the nut onto the threaded end of
the rod. Torque the nut to 1100-1250 lb-ft (1492-
1695 Nm).
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).
12. Fasten the cylinder tube (2) in a soft-jawed vise or
other suitable holding device.
13. Lubricate the o-rings and the inside of the tube,
piston and head gland with clean, filtered hydraulic
oil. This will aid in installation.
MH2900
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