Autoquip TRUCK LEVELER - SHALLOW PIT MOUNT - Manual (Page 36)

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CYLINDER REMOVAL AND REPACKING (see Figure 12)
1. Fully lower the platform by depressing the “DOWN” button on the controller.
Continue to hold the “DOWN” button for 5 to 10 seconds to relieve all hydraulic
pressure from the cylinders.
DANGER!
HIGH VOLTAGE!! Disconnect and/or lock out the electrical supply to the
power unit prior to any maintenance being performed.
2. Remove the cover plate from the tower with the defective cylinder (on surface
mounted truck leveler). Loosen and remove the transition hose from the velocity
fuse and remove the velocity fuse from the elbow in the lower cylinder port. A plug
should be placed in the ends of the transition hose and velocity fuse to prevent oil
spillage or contamination. Remove the pin retainers and pins and take the cylinder
out.
3. Push the rod fully into the cylinder to eject any remaining oil.
4. Pull the rod out of the cylinder 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 cylinder open port.
5. Using a 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.
6. Insert a small blade screwdriver under the tip of the retainer and turn counter
clockwise until the retainer is free of the slot. NOTE: The wire retainer may be a
cutting or puncturing hazard.
7. 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 that could result in seal
failure and/or leakage.
8. 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.
9. Remove the piston locknut and slide the piston and bearing assembly off of the rod.
Take care to protect the rod surface from damage.
GENERAL MAINTENANCE