Common faults of Harvey 5 valve star wheel of fully mechanized mining machine

The common faults of Harvey 5 valve star wheel of comprehensive tunneling machine include valve core wear or seizure, air leakage and air leakage.

1. Worn or stuck valve core: The valve core may be worn or stuck during use, which will cause the valve not to open or close normally and affect the normal operation of hydraulic oil flow.

2. Leakage: Bad valve seal or aging or damage of seal will lead to hydraulic oil leakage, which will affect the working efficiency of the system.

3. Air leakage: Air leakage will lead to insufficient air pressure and affect the working efficiency of the system.