Jackco Model 66200B - Manual (Page 6)

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 1.Verify the release valve is
closed by position of handle.
Releasing valve may need
cleaning.
2.Low/no hydraulic fluid in
reservoir
2.Fill with approved hydraulic
fluid and bleed system
3. Air-locked system 3.Bleed system
4.Load is above capacity of
jack.
4.Use correct equipment
5.Delivery valve and/or bypass
valve not working correctly.
5.Clean to remove dirt or
foreign matter. Replace
hydraulic fluid.
6. Packing worn our or
defective
6. Replace packing
Jack lifts only partially 1.Too much or not enough
hydraulic fluid
1. Check hydraulic fluid level
Jack advance slowly 1.Pump not working correctly 1.Rework pump
2.Leaking seals 2.Replace seal
Jack lifts load, but doesn’t hold 1.Cylinder packing is leaking 1.Replace packing
2.Valve not working
correctly(suction, delivery,
release, or bypass)
2. Inspect valves. Replace if
necessary
3. Air-locked system 3. Bleed system
Jack leaks hydraulic fluid 1.Worn or damaged seals 1.Replace seals
Jack will not retract 1. Release valve is closed 1. Open the release valve by
pulling on and turning the
handle clockwise (CW).
Maybe necessary to clean
release valve.
Jack retracts slowly 1.Cylinder damaged internally 1.Send jack to authorized
service center
2.Return spring is damaged 2.Replace return spring
3.Link section is binding 3. Lubricate link sections