Lubrication
A periodic coating of light lubricating oil to pivot points, axles and hinges will help to prevent rust and assure that
pump assemblies move freely.
Cleaning
Periodically check the pump piston and Ram Plunger 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 or pump piston surfaces.
Storage
When not in use, store the jack with pump piston and Ram Plunger fully retracted and air supply disconnected.
TROUBLESHOOTING
Symptom
Possible Causes
Corrective Action
Jack will not lift load
• Release Valve not tightly closed
• Overload condition
• Ensure Release Valve tightly
closed
•
Remedy overload condition
Jack will lift, but not maintain
pressure
•
Release Valve not tightly closed
•
Hydraulic unit malfunction
•
Ensure Release Valve tightly
closed
•
Contact Mac Tools Tech. Service
Jack will not lower after
unloading
• Reservoir overfilled
• Ensure load is removed, then drain
fluid to proper 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
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