Shandong Nuoman Engineering Machinery Co.,Ltd
Business Room, No. 7, Zhongshan West Road, Gulou Street Office, Yanzhou Dist., Jining, Shandong, CN
TEL/Fax:+8618266821667 Whatsapp/Wechat:+8618266821667
Rotary valve rod on main valve is stuck.
The rotation support is damaged.
Indifferent left and right
The right and left rotation of multiway valve
is of different overloaded pressure
Rotation valve rod of multiway valve is
Serious external leak of hydraulic oil pipe
Change pipe fitting and sealing
Low overloaded pressure for rotation of
Serious internal leak of rotary motor
The high and low pressure chambers of
multiway valve are connected, sand hole on
valve body due to casting, which causes
one-way action or linked actions
Main valve rod spring breaks
moves even it is operated
Low oil level of hydraulic oil tank
The oil contains too much moisture and air
Safety valve of multiway valve makes noise
Vibration caused by loose pipe clamp
Air exists in oil suction hose
The bearing of working device is not
Apply lubrication oil or change the
Damaged sealing components
Change the sealing components
A groove is found on the piston rod due to
Powerless oil cylinder or
abrasion or detachment of chromium coating
Coat, paint, repair or change
of piston rod, which causes oil leak.
The air in the cylinder causes shaking noise
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