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7
TROUBLESHOOTING
PROBLEM-SOLVING HINTS
Symptom Possible Causes
Corrective Action
Jack does not lift load
Jack bleeds off
(starts to lower) after lift
Jack does not lower after
unloading
Poor lift performance
•Release valve not tightly closed
•Overloaded - too much weight on jack
• Release valve not tightly closed
• Hydraulic unit malfunction
•Oil reservoir overfilled
•Linkages binding
•Ensure release valve is tightly closed
• Reduce weight on jack
•Ensure release valve is tightly closed
•Replace power unit assembly
•Drain fluid to proper level
•Clean and lubricate moving parts
•Ensure proper fluid level
•With ram fully retracted, open release
valve and remove oil filler plug, pump
handle several times to expel trapped
air. Replace oil filler plug.
Does not lift to full
extension
2
5
4
FIG. 5
3
PARTS
Key Description
1 Saddle
2Handle Assembly
3Front Wheel
4Handle Socket Assembly
5 Rear Caster Assembly
6 Power Unit Assembly
—Oil Filler Plug
—Operators Manual
—Warning Label
1
•Fluid level low
MODEL NUMBER: 50136
The Model Number and Serial Number are found on the lifting arm and handle socket
respectively. Always mention the Model Number and Serial Number when requesting service
or repair parts for your jack.
6
•Fluid level low
•Air trapped in system
•Ensure proper fluid level
PARTS ARE ONLY AVAILABLE IN ASSEMBLIES (except Saddle)
For after sale support and assistance:
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419