Troubleshooting; Parts - Craftsman FLOOR JACK 50156 Operator's Manual

Symptom
Jack will not lift load
Jack bleeds off
(starts to lower) after lift
Jack will not lower after
unloading
Poor lift performance
Will not lift to full
extension
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
Call 8:00 AM - 4:45 PM CST., Monday - Friday 1-888-332-6419

TROUBLESHOOTING

PROBLEM-SOLVING HINTS
Possible Causes
• Release valve not tightly closed
• Overloaded - too much weight on jack
• Release valve not tightly closed
• Hydraulic unit malfunction
• Oil reservoir overfilled
• Linkages binding
• Fluid level low
• Air trapped in system
• Fluid level low

PARTS

For after sale support and assistance:
• 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
screw, pump handle several times to
expel trapped air. Re-install oil filler
screw.
• Ensure proper fluid level
8
1
FIG. 6
7
Corrective Action
7
2
4
3
5
6