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7
TROUBLESHOOTING
PROBLEM-SOLVING HINTS
2
5
7
4
FIG. 6
3
PARTS
MODEL NUMBER: 50156
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.
The Model Number and Serial Number
are found on the lifting arm and handle socket respectively.
Key Description
1 Saddle Assembly
2 Power Unit Assembly
3 Handle Assembly
4 Front Wheel Assembly
5 Handle Socket Assembly
6 Rear Castor Assembly
7 Tool Tray
8 Oil Filler Screw
-- Operators Manual
-- Warning Label
1
8
6
Symptom Possible Causes Corrective Action
Jack will not lift load • Release valve not tightly closed
• Overloaded - too much weight on jack
• Ensure release valve is tightly closed
• Reduce weight on jack
Jack bleeds off
(starts to lower) after lift
• Release valve not tightly closed
• Hydraulic unit malfunction
• Ensure release valve is tightly closed
• Replace power unit assembly
Jack will not lower after
unloading
• Oil reservoir overfilled
• Linkages binding
• Drain fluid to proper level
• Clean and lubricate moving parts
Poor lift performance • Fluid level low
• Air trapped in system
• Ensure proper fluid level
• With ram fully retracted, open
release valve and remove oil filler
screw, pump handle several times to
expel trapped air. Re-install oil filler
screw.
Will not lift to full
extension
• Fluid level low • Ensure proper fluid level
For after sale support and assistance:
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419