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Address:Erzhongnan Road,Puyi
Industrial Zone,Oubai Town,Yongjia
City,Zhejiang Province,China
Phone:+86-0577-67317333
Fax:+86-0577-67310059
Mobile:15068283248
13868620320
Mail:1119313674@qq.com
Skype:sunhoney888
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Current Location: Home》Support
Failure Place of failure Reason of failure Solution of failure
Cylinder
creeping
Hydraulic
system
Air enters hydraulic system,cylinder run and stop and shake continously Loose joints of cylinder to exhaust the air
System pressure lower than friction resistance Adjust to the needed pressure
Cylinder and valve are not fully sealed,the air enters Install and replace sealing loap
No movement
of cylinder
Reversing
valve
Slide valve damaged or blocked clean and repair slide valve
control pressure and oil pressure is too low Increase the pressure of control pressure oil
Control oil tube blocked Through the control oil path
Failure of resersing,valve core can't reset Examine and clean
Electric
equipment
Bad insulation of coil of electric of electric magnet Replace electric magnet
Dirt in iron part of electric magnet Sanding clean
Damage of control button Replace again
Wrong voltage Change the voltage
Bad welding of wires,loose of joints Weld again and fasten the screw
Pressure
increasing
cylinder
Pressure
dwell
Dirt block the valve core of one-way valve Examine and clean
Damage of valve core of one-way valve Grind and replace
Distortion of spring of one-way valve Examine and replace
Oil leakage at jointing parts Examine and replace O shape loap
No pressure increase Dirt in pressure-increasing solenoid reversing valve Examine and clean
Damage of pressure-increasing cylinder and sealing components Replace
Damage of cone of pressure-increasing adjust valve Grind, clean and replace
Damage of pressure-increasing control button Replace

No pressure 
and no oil
 sucked

Oil pump

Wrong rotating direction of motor Change the power wire and correct the direction of motor
Oil level too low, oil cannot be sucked Examine the oil in the cylinder regularly, and add oil to the standard line.
Viscosity of oil is too high cause the inflexible movement of impeller Change the low viscosity(equivalent to ISOVG46, 56, 68oil)
Failure of pressure gauge or blocked, can not indicate the pressure Measure, clean and replace

Failure of 
pressure 
adjustment

Overflow
 valve

Valve core is trapped at the whole-open position, no oil enter the system

Get rid of the failure of blocking
Burrs or dirt in the valve core Examine, trim, grind, clean
Damping hole block Through the damping hole and clean
Bad contact of cone valve and valve seat hole Change the cone valve
The space between valve cone and valve body is too big Replace valve core, adjust the space between
Severe nosie
and shake
Oil pump Air enters oil suction tube, oil filter blocked Examine, trim, grind, remove, clean
No enough oil in the cylinder, air entered Add hydraulic oil to the standard line
Stator and impeller worn after long time usage Repair impeller, repair the part by grinding
Overflow
valve
Distortion of spring of overflow valve, can not replace Examine and replace spring
Damping hole on the valve core blocked by dirt Through the damping hole by 1mm steel thread and clean
Viscosity of oil too high Decrease the viscosity of oil
Resonance with others, impact with the tube

Separate the longer tubes

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Address:Erzhongnan Road,Puyi Industrial Zone,Oubai Town,Yongjia City,Zhejiang Province,China
Phone:+86-0577-67317333
Fax:+86-0577-67310059
Mobile:13868620320;15068283248
Mail:1119313674@qq.com
Skype:sunhoney888



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