6
Problem
Cylinder will not extend
or fully extend
1.Pump release valve open
2.Couplers not fully tightened
3.Oil level in pump reservoir is low
4.Pump or valve malfunctioning
5.Overload for cylinder
6.Cylinder piston rod binding
1.Fully tighten pump release valve
2.Fully tighten couplers
3.Fill oil in pump
4.Repair or use another pump and valve
5.Change another cylinder with
appropriate capacity
6.Check for dirt or leaks, change the
damage parts
Cause
Solution
Cylinder can not
maintain pressure
1.Leaky connection
2.Cylinder seals leaking
3.Release valve not fully closed
4.Pump or valve malfunctioning
1.Clean and reseal thread, tighten connection
2. Replace worn seals. Clean inside cylinder
and use clean hydraulic oil
3. Fully tightening the release valve
4. Repair, or use another pump and valve
Cylinder extends
slower than normal
1. Leaky connection
2. Coupler not fully tightened
3. Pump malfunctioning
1.Clean and reseal thread, tighten
connection
2. Fully tighten couplers
3. Repair or use another pump and
valve
Cylinder extend in dithering
1. Air in system
2. Cylinder piston rod binding
1. Bleeding air in the system
3. Check for dirt or leaks. Check for bent,
misaligned and worn parts
Cylinder leaks hydraulic oil
1. Leaky connection
2. Worn or damaged seals
3. Cylinder damage
1.Clean and reseal thread, tighten
connection
2.Replace worn seals, clean inside cylinder
and use clean hydraulic oil
3. Use new cylinder of contact with your
nearest Authorized EAGLE PRO
Hydraulic Service Center.
Cylinder will not retract or
Retracts slower than normal
1. Pump release valve closed
2. Couplers are not fully tightened
3. Pump reservoir is full
4. Hose is blocked
5.EL cylinders are load return
6. Cylinder damaged
1. 0pen release valve
2.Tightening the couplers
3. Drain hydraulic oil to correct level
4. Clean or change hose
5. Retract cylinder by load
6.Use new cylinder or contact your
nearest Authorized EAGLEPRO
Hydraulic Service Center
07
TROUBLE-SHOOTING
WARNING:
EAGLE PRO Cylinders should be repaired only by a qualified
operator or authorized EAGLE PRO Service Center. Repair cylinders without
special tools and knowledge may result in personal injury. Please release
pressure and disconnect hose(s) before making repair.
EAGLE PRO INDUSTRIES, INC.
Form No. E01104
Rev. A Date: 06.10.2009