Jackco Model 65500A - Manual (Page 5)

Caution: To prevent personal injury, all inspection, maintenance, and repair
procedures must be performed when the jack is free of load.
TROUBLESHOOTING
Trouble Cause Solution
Jack does not lift 1. Release valve is open
2. Low/ no oil in reservoir
3. Air-locked system
4. Load is above capacity of jack.
5. Delivery vale and/or bypass
valve not working correctly.
6. Packing worn out of defective.
7. Leak in air line
8. Inadequate air pressure.
1. Close release valve.
2. Fill with oil and bleed system.
3. Bleed system.
4. Use correct equipment.
5. Clean to remove dirt or foreign
matter. Replace oil.
6. Install seal kit.
7. Locate leak; tighten
connections
8 Set air pressure to 85-120 psi
Jack lifts only partially 1.too much or not enough oil 1.Check oil level
Jack advances slowly 1. Pump not working correctly.
2. Leaking seals.
1. Install seal kit, or replace power
unit.
2. Install seal kit.
Jack lifts load, but
doesn’t hold
1. Cylinder packing is leaking.
2.Valve not working correctly
(suction, delivery, release, or
bypass)
3. Air-locked system.
1. Install seal kit.
2. Inspect Calves. Clean and
repair seat surfaces.
3. Bleed system.
Jack leaks oil 1. worn or damaged seals 1. install seal kit
Jack Will not retrack 1. Release valve is closed 1.open or clean release valve.
Air motor won’t run or
runs erratically
1. Leak in air line.
2. Inadequate air pressure
3. Air piston is sticking
1. locate leak, tighten
connections, or replace hose.
2. Set air pressure to 85-120 psi.
3. Lube air motor by adding a
small amount of oil to jack’s air
inlet
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