Autoquip PLTC-58120, Installation, Operation And Service Manual

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7. Install new piston, seals, and rod wiper.
8. Install and tighten piston head nut to 325
ft•lb of torque. Upper clevis and pin may be used to prevent
rotation of rod while tightening.
9. Liberally lubricate piston and seal with clean grease or oil.
10. Insert piston into barrel, taking care not to damage seal.
11. Slip bearing assembly into place and align retainer hole with slot in barrel.
12. Turn bearing with spanner wrench until retainer is reinserted completely.
6.3.1.3. Placing Cylinder Back Into Service
Loctite PST #567 pipe thread sealant or equivalent is recommended.
Do not use Teflon tape on hydraulic threaded connections.
Tape fragments may damage hydraulic system.
Autoquip recommends replacing any NPT fittings that have been disassembled due to their inherent
design for sealing.
1. Check that lift anchors are tight (when used). Check all pins and other mechanical and hydraulic
connections.
2. Restore oil level. See oil recommendations in
“Oil Requirements” section.
3. Turn on electrical power and pre
ss “UP” button. Loosen bleeder plug at the top end of ram casing and
operate pump to remove trapped air from ram. When clear oil appears, tighten plug and raise lift
slightly to disengage maintenance locks.
4. Lower lift completely and hold
“DOWN” button for 60 seconds to allow air in cylinders to bleed back
into reservoir.
5.
See “Bleeding Air From System” section
6.3.2 Bleeding Air From System
1. Bleed air from system by raising lift 25-50% of full travel, then lower
completely.
2.
Hold “DOWN” button for 60 seconds.
3. Repeat procedure 8-10 times. If this does not bleed all air from system,
contact Autoquip.
4. Clean up any spilled oil. Dispose of spilled oil in an environmentally safe
manner.
6.3.3 Hydraulic Velocity Fuse and Flow Control (VF/FC) Replacement
NOTICE