Autoquip CAROUSEL WORK PLATFORM - Manual (Page 22)

22
CYLINDER REMOVAL AND REPACKING (see figure 12)
1. Raise the lift to its full height and block securely. See “Lift Blocking Instructions”.
2. Loosen and remove the cylinder hose at the hose union in the tee connection
between the two cylinders. Place the open end of the hose in a container to
receive oil spillage.
3. Remove the pin retaining screw in the cylinder clevis or pin retaining rings, and
carefully tap out the clevis pin to avoid damaging the clevis pin bushings.
4. Remove the cylinder from the lift.
5. Push the piston rod into the tube to eject as much oil as possible into a container.
6. Pull the rod out of the cylinder tube sufficiently to gain access to the face spanner
wrench holes on the rod end of the cylinder. Do not allow oil or dirt to be pulled
back into the hydraulic hose.
7. Using a face spanner wrench, turn the bearing assembly clockwise until the tip of
the retainer appears in the slot in the outer surface of the cylinder tube.
8. Insert a small blade screwdriver under the tip of the retainer and turn the bearing
assembly counter-clockwise until the retainer is free of the slot.
NOTE: The wire retainer may be a cutting or puncturing hazard.
9. Pull the rod out of the tube slowly to remove the rod and bearing assembly.
NOTE: Use caution to prevent surface damage to the rod. This could result in
seal failure and/or leakage.
10. Inspect the bore of the tube. Hone if necessary to remove any surface
imperfections in the bore. Flush thoroughly after honing to remove chips and grit.
11. Remove the piston lock nut and slide off the piston and bearing assembly. Take
care to protect the rod surface from damage.
12. Install new packing and seals on the piston, rod, and bearing assembly. Inspect all
grooves and seal surfaces for any imperfections and repair or replace as
necessary.
13. Grease all seals and packing liberally and install the bearing assembly and the
piston on the rod and torque the lock nut to 500 ft. lbs.
GENERAL MAINTENANCE