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TROUBLESHOOTING
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
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
• Air trapped in system
• Fluid level low
7
Corrective Action
• Ensure release valve tightly closed
• Consider higher capacity jack
• Ensure release valve tightly closed
• Discontinue use, contact
Blackhawk 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 3)
• Ensure proper fluid level
10939 N. Pomona Ave. Kansas City, MO 64153
sales@blackhawk-automotive.com
SFA Companies
816-891-6390
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