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TROUBLESHOOTING
PROBLEM-SOLVING HINTS
FIG. 5
8
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
•Too much weight on jack
• Hydraulic unit malfunction
•Oil reservoir overfilled
•Linkages binding
•Ensure release valve is tightly closed
• Reduce weight on jack
•Ensure release valve is tightly closed
• Reduce weight on jack
•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, pump handle several times to
expel trapped air
•Ensure proper fluid level
Does not lift to full
extension
•Fluid level low
•Fluid level low
•Air trapped in system
PARTS
MODEL NUMBER: 50239
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.
PARTS ARE ONLY AVAILABLE IN ASSEMBLIES (except Saddle)
Key Description
1 Saddle
2 Power Unit Assembly
3Handle Assembly
4Front Roller Assembly
5Handle Socket
6 Rear Caster Assembly
7Oil Filler Screw
—Operators Manual
—Warning Label
1
7
2
3
5
6
4
For after sale support and assistance:
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419