Excavator main pressure reducing valve 25/618901 safety valve Hydraulic valve

Excavator solenoid valve maintenance

The excavator solenoid valve is driven by the electromagnetic coil to gain and lose power, which is easier to be damaged by voltage impact, usually the solenoid valve core is not easy to break, and the electromagnetic coil is burned out more. Reasons for damage of excavator solenoid valve
There are many situations: long use time, coil aging damage; Voltage instability leads to coil burnout; Coil lines take iron and so on.
Solenoid valve coil is usually divided into 12V and 24V two kinds, the optional coil must be analyzed clearly, once the mistake is easy to appear the spool can not open, the voltage is too large to burn out the result.

The excavator electromagnetic coil is the same as many industrial hydraulic electromagnetic coils and can be used instead. When buying, first measure the inner diameter and height with oil standard calipers, the inner hole is divided into British and national standards, must be measured accurately, and the shape can be ignored. Need to install their own car wire (copper wire), the general wire diameter of Phi 0.85mm, Phi 1.25mm. When installing the wire, pay attention to the positive and negative poles can not be reversed, generally with resistance is the positive pole, first unscrew the wiring socket, the cut wire connected and tight, if loose will lead to poor contact.