5
Symptom
Possible Causes
Corrective Action
Jack will not lift load
• Release valve not tightly closed
• Load is too heavy
• Ensure release valve tightly closed
• Consider higher capacity jack
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
•
Hydraulic unit malfunction
• Ensure proper fluid level
•
Discontinue use, contact Technical
Service
Will not lift to full extension
• Fluid level low
• Ensure proper fluid level
TROUBLESHOOTING
REPLACEMENT PARTS
Not all components of the jack are replacement items, but are illustrated as a convenient reference of location and
position in the assembly sequence. When ordering parts, give Model number, serial number and parts description
below. Call or write for current pricing: ATD Tools Inc. 160 Enterprise Drive, Wentzville, MO 63385.
Tel:(816)891-6390 Fax:(816)891-6599
