TROUBLESHOOTING
Symptom
Possible Causes
Corrective Action
Crane will not lift load
• Release valve not tightly closed
• Overload condition
• Ensure release valve tightly closed
•
Remedy overload condition
Crane will lift, but not maintain
pressure
•
Release valve not tightly closed
•
Hydraulic unit malfunction
•
Ensure release valve tightly closed
•
Contact Omega Tech. Service
Crane will not lower after
unloading
• Reservoir overfilled
• Ensure load is removed, then drain
fluid to proper level
Poor lift performance
• Fluid level low
•
Air trapped in system
• Ensure proper fluid level
•
With ram fully retracted, remove
oil filler plug to let pressurized air
escape, then reinstall oil filler plug
Crane will not lift to full extension
• Fluid level low
•
Ensure proper fluid level
8
MAINTENANCE
(cont.)
Storage
Store the engine crane with the pump piston, ram, and boom fully lowered and the release valve open, but never
more than 2 full turns. This will help prevent rust and corrosion to those critical surfaces of hydraulic unit.