6
Troubleshooting Guide
Symptom
Possible Causes Corrective Action
Erratic action
• Air in system or pump cavitation
• External leakage in flat body cylinders
• Cylinder sticking or binding
• Follow pump instructions for bleeding
air
• Contact Service Center
• Contact Service Center
Cylinder does not move
• Loose couplers
• Faulty coupler
• Improper valve position
• Low or no hydraulic fluid in pump
reservoir
• Air-locked pump
• Pump not operating
• Load is above the capacity of the
system
• Tighten couplers
• Replace both female and male
couplers(see Page 7)
• Close release valve or change pump
position
• Fill and bleed the system
• Prime pump per pump operating
instructions
• Check pump's operating instructions
• Use the correct equipment
Cylinder extends only partially
• Pump reservoir is low on hydraulic
fluid
• Load is above the capacity of the
system
• Cylinder is sticking or binding
• Fill and bleed the system
• Use the correct equipment
• Contact Service Center
Cylinder moves slower than normal
• Loose connection or coupler
• Restricted hydraulic line or fitting
• Pump not working correctly
• Cylinder seals leaking
• Tighten
• Clean and replace if damaged
• Check pump operating instructions
• Replace cylinder
Cylinder moves but does not maintain
pressure
• Cylinder seals leaking
• Pump or valve malfunctioning
• Replace cylinder
• Check pump operating instructions
Cylinder leaks hydraulic fluid • Worn or damaged seals • Replace cylinder
Cylinder will not retract or retracts
slower than normal
• Pump release valve closed
• Loose couplers
• Weak or broken retraction springs
• Cylinder damaged internally
• Pump reservoir too full
• Open pump release valve
• Tighten couplers
• Replace cylinder
• Replace cylinder
• Drain hydraulic fluid to correct level
