Figure 2 - Pump and Ram Components
4
- KNOW YOUR PRODUCT -
TROUBLESHOOTING
Symptom
Possible Causes Corrective Action
Ram will not extend
Ram *bleeds off after extending
Will not lift to full extension
• Release valve not tightly closed
• Overload condition
• Hand pump uid level low
• Hand pump uid level low
• Air trapped in hand pump system
• Release valve not tightly closed
• Hydraulic unit malfunction
• Ensure release valve tightly closed
• Remedy overload condition
• Ensure release valve tightly closed
• Contact Service Center
• Ensure proper uid level
• Ensure proper uid level
• With ram fully retracted, remove oil ller
screw to let pressurized air escape, then
reinstall oil ller screw
Poor performance
• Hand pump reservoir overlled
• Ram damaged
• Drain uid to proper level
• Replace ram
* "Bleeds off" means that ram begins to slowly retract rather than maintain position.
Ram will not lower after un-
loading
Oil Filler
Screw
Handle
Release Valve
Plunger
Hose
Hose
Coupler
Ram Coupler
Ram
Dust Cover
Gauge
Model
Pump
Capacity
Ram
Capacity
Ram
Number of
Attachments
Closed Height Extended Height
YA1544A 8,000 psi 4 Ton 10-3/4” 15-5/8” 14
YA1545 10,000 psi 10 Ton 13-3/4” 19-3/4” 13