Autoquip PLTC DOCK LIFT - Manual (Page 48)

48
CYLINDER REPACKING – continued
13.
Check the clevis pin bushings in the cylinder rod for wear and replace as
necessary.
14.
Install the assembled cylinder into the lift by carefully driving the trunnion clevis
pin through the trunnion clevis and cylinder rod. Extreme care must be taken to
prevent damage to the clevis bushings. Install the pin retaining screw with the
washer, (engaging the slot in the pin), and torque to 25 ft. lbs. The cylinder rod
may be extended by hand to allow cylinder to contact thrust angle in leg
assembly.
15.
As the cylinder clevis rests on the thrust angle, insert the cylinder hose through
the cylinder retainer ring. The cylinder retainer ring is welded to the top of the
thrust angle above the cylinder.
16.
Connect the cylinder hydraulic hose to the tee in the leg assembly using the
recommended sealant. (See below)
17.
Check all pins and other mechanical and hydraulic components to assure that
the assembly is complete and in good working order.
18.
Turn the electrical supply back on and press the “UP” button on the controller to
raise the lift. NOTE: 15 to 30 seconds time may elapse to fill the empty cylinders
before movement is noted. NEVER raise a lift to the full raised height, until the
cylinders and hoses have been completely bled of air.
19.
Remove and place the maintenance leg in its storage location, then press the
“DOWN” button on the controller to cycle the lift to the fully lowered position.
Hold the “DOWN” button 30 to 40 seconds to allow air in the cylinders to bleed
back into the reservoir tank.
20. Cycle the lift 10 to 15 times and repeat the bleeding operation by holding the
”DOWN” button for 30 to 40 seconds.
21.
Check the oil level in the reservoir with the lift in the fully lowered position.
Add oil as necessary (see “Routine Maintenance” for oil recommendations).
22. Clean or replace the oil filler breather cap if it appears dirty.
23. Clean up any debris and or spilled oil from the area.
PIPE THREAD SEALANT
Loctite PST #567 pipe thread sealant or equivalent is recommended. Do not use
Teflon tape. Tape fragments can cause malfunctioning of the hydraulic system.
GENERAL MAINTENANCE