Lovol FR18E-u - Hydraulic Motor; Hydraulic Oil Cylinder

Troubleshooting
Troubleshooting 6-
5
Hydraulic Motor
Trouble Cause Measures
Hydraulic motor can not run Low hydraulic oil level Refill oil
Bad hydraulic pump Replace pump
Oil leakage from hydraulic motor Replace motor
Overload of output shaft Relieve overload
Low viscosity of hydraulic oil Replace sealing ring
Hydraulic motor can not rotate in
one direction
Bad overflow valve for control
valve
Clean or replace overflow valve
Low rpm Low hydraulic oil level Refill oil
Oil leakage due to high
temperature
Cool oil
Air trapped in system Remove air
Oil leakage from motor Replace motor
Abnormal sound from hydraulic
motor
Low hydraulic oil level Refill oil
Air trapped in motor Remove air
Worn hydraulic motor Replace motor
Improper installation of shaft Adjust shaft
Hydraulic Oil Cylinder
Trouble Cause Measures
Underpowered oil cylinder Lower pressure in overflow valve Adjust pressure
Oil leakage from oil cylinder Replace hydraulic oil sealing ring
Damaged piston or piston rod Replace piston or piston rod
Oil leakage from control valv e Replace valve core
Leakage from oil cylinder
Bad sealing ri ng for hydraulic oil
cylinder
Replace the sealing ring
Unsmooth action of piston High temperature o f hydraulic oil Cool
Air in the system Refill oil and tighten cap