Table of Contents
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Symptom
Jack will not lift load
Jack will lift, but not
maintain pressure
Jack will not lower
after unloading
Poor lift performance
Will not lift to full
extension
TROUBLESHOOTING
PROBLEM-SOLVING HINTS
Possible Causes
• Release valve not tightly closed
• Load is too heavy
• Release valve not tightly closed
• Hydraulic unit malfunction
• Reservoir overfilled
• Linkages binding
• Fluid level low
• Fluid level low
• Hydraulic unit malfunction
• Fluid level low
• Ensure release valve tightly closed
• Consider higher capacity jack
• Ensure release valve tightly closed
• Discontinue use, contact technical
service
• Drain fluid to proper level
• Clean and lubricate moving parts
• Ensure proper fluid level
• Ensure proper fluid level
• Perform Bleeding/Venting Trapped
Air procedure, page 4)
• Ensure proper fluid level
5
Corrective Action
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