A customer's small excavator has been used for a long time. The damage of the pilot valve caused the hydraulic oil to leak continuously, looking at the distressed, and decided to change the new one. After the new pilot valve, hand, is the installation steps.

The following is the customer's spot record:

Open package walking pilot valve

Take the floor glue

Take a rubber floor, overlooked a confused, too horrible to look at, is full of oil, no leakage of two barrels of oil a month. In the beginning, the pedal on paper away, can be seen above a few inner six angle screws, remove the pedal can be taken, it is easier to take a fixed screw

Pilot operated valve warhead

Take the pedal off and see the bullet! Oil seepage is this place, the bottom plate is opened, the bottom is full of oil. The pilot assembly only a total of six tubes, it is not difficult to remember, into a oil, oil back one, forward two left and right, back two left and right. Afraid of not remember, there is a way of soil, bound by direction, never wrong!

Walking pilot valve assembly

Take out the old joint

After remove the assembly, the original joint demolition of the past, when installed raw materials with the best adhesive or screws, the screws do not prevent leakage, large force, prevent screw fracture, because the joint is empty, the strength is not enough, difficult to break with. Don't waste time and money because of a screw.

Remove the handle

After installing the joint, remove the handle and fit it in the original direction. It may be deformed for a long time! You can try it before the final installation, whether the two balance, if the deformation, remove the water pipe is correct, and then tighten it.

P is oil, and T is oil return

Remember, these two tubing don't fit incorrectly. The wrong assembly may hold back the assembly. P is the oil, and t is the oil. Generally, the oil inlet joints are marked, and careful inspection will not be wrong.

The walking pilot valve is replaced

Finally finished, wipe with towel, you can try the machine! Push before and after walking, let the machine hold back, try to have leakage of joints, whether the direction deviation. After checking, everything is normal!

In our own excavator replacement parts, first of all to be bold but cautious, must keep the original state of the line machine, do not take the wrong, otherwise it may cause a greater failure. Of course, before their own operation, or to learn relevant knowledge, do what you know.