ESCO Equipment Supply Company
5
5.TROUBLESHOOTING
Symptom
Possible Causes
Corrective Action
Jack will not lift load
Release valve not tightly closed
Overload condition
Air supply inadequate
Air trapped in system
Close release valve firmly
Remedy overload condition
Ensure adequate air supply
Purge away air from system
Jack will lift, but will not
maintain pressure
Release valve not tightly closed
Overload condition
Hydraulic unit malfunction
Close release valve firmly
Remedy overload condition
Contact your dealer
Will not lower after
unloading
Reservoir overfilled
Linkages binding
Drain oil to proper level
Clean and lubricate moving parts
Poor lift performance
Hydraulic oil level low
Air trapped in system
Add oil to proper level
Purge away air from system
Will not lift to max height
Hydraulic oil level low
Add oil to proper level
