5
TROUBLESHOOTING
Symptom
Possible Causes
Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Overload condition
• Air pressure inadequate
• Ensure release valve tightly closed
• Remedy overload condition
•
Ensure adequate air pressure
Jack will lift, but not maintain
pressure
•
Release valve not tightly closed
• Hydraulic unit malfunction
•
Ensure release valve tightly closed
• Discontinue use, contact technical
service
Jack will not lower after unloading
• Reservoir overfilled
• Linkages binding
• Fluid level low
• Drain fluid to proper level
• Clean and lubricate moving parts
• Ensure proper fluid level
Poor lift performance
• Fluid level low
•
Air trapped in system
• Ensure proper fluid level
•
Follow
Bleeding/Venting Trapped
Air
procedure on page 3
Will not lift to full extension
• Fluid level low
• Ensure proper fluid level
Lubrication
A periodic coating of light lubricating oil to pivot points and hinges, and applying grease to the lift arm and wheel
fittings, will help to prevent rust and assure that wheels, casters and pump assemblies move freely. To help ensure
trouble free operation, an in-line air dryer and oiler is recommended.
Cleaning
Periodically check the pump piston and ram for signs of rust or corrosion. Clean as needed and wipe with an oily
cloth.
NOTICE: Do not use sandpaper or abrasive material on ram and pump piston surfaces.
Storage
When not in use, store the jack with saddle fully lowered.
