Hydraulic wrenches are tools that are often used in daily life. They have become the necessary tools for vehicle maintenance and industrial production. Then what should be paid attention to the usual maintenance and maintenance of some common pressure relief valves and flow control valves?
The reason that the pressure relief valve has failed may be because the pressure is too high or lower than the relief valve. It may also be because of stress instability. These failures may result in inconsistent poppet movements, or unstable poppet valves, and may cause air to be trapped in the oil. For these, we can open the hole in the center of the back pressure change spool of oil discharge and check the oil inside. Then separate from the other control valve's tubing and shoot the air inside. Of particular note here is the hydraulic control valve.
Failure of the flow control valve may cause the pressure correction device not to operate. This may be caused by dust in the valve core or dust in the small holes in the sleeve. For this case, it is sufficient to separate and clean the pressure difference at the outlet of the flow.
The adjustment axis of the flow is tight. The reason for this condition may be due to the adjustment of the shaft to dust. It is very laborious to clean up here, and the general roots of the equipment cannot be cleaned there. We can take measures to allow him to start the six-point scale when the second pressure rises.
In addition to these, the hydraulic wrench should also pay attention to the maintenance and repair of the directional control valve. During manual operation, the oil seal of the stem was found to be leaking, which may be caused by the broken seal. In this case, just open the cylinder head and replace the oil seal.
This article comes from /newshow.asp?id=771