There are many reasons for the failure caused by the excavator's weakness.It is necessary to clearly understand the cause of the failure caused by the excavator's weakness and inability to know how to deal with the occurrence of such failures.This article will talk about such failures of Hitachi ZX360K-5A excavator Repair example.
First of all, when the excavator suddenly produced a no-operation failure of the whole vehicle during construction, it should not panic at this time. The main reason for this failure is: the pilot oil at the pilot handle of the excavator is cut off and cannot be reached.
Maintenance method:
1. What should I do if the Hitachi ZX360K-5A excavator has no action (weakness) on the working vehicle? First, the safety solenoid coil is damaged and does not work. At this time, just replace the solenoid valve coil with the walking solenoid valve coil on the side. Of course, you can only have a low-speed gear when walking. Follow-up only need to buy a coil and install it. The circuit to the solenoid valve coil has a problem and there is no power. At this time, just replace the plug of the high-low speed solenoid valve walking on the side Just go to the safety solenoid valve. Note that after switching, it will be controlled by the switch of high and low speed of walking to control whether there is action, and at the same time, the speed of walking is only low.
2. After replacing the coil and the wire end, the problem is not solved. At this time, the internal solenoid valve core must be dirty. At this time, as long as the coil is removed, the valve core is removed, and then the foreign body is cleaned and installed. The most fool The method is to tighten the emergency screw on the back of the safety solenoid valve to resume construction after tightening. Do not, the safety lock at this time loses its function, as long as the operation handle has an action, the excavator will produce a corresponding action, the driver friends Be sure to pay attention to safety.
3. If none of the above methods can be solved, it may be that the pilot pump of your equipment has a problem or that the oil output pressure is lower than that. It is best to ask a professional service engineer to check and repair it. It seems to be more serious. In fact, it is the simplest failure and there are no big problems, let alone worrying about how much money is spent.
Related Reading:
The problem of the high-pressure oil supply pump of the excavator occurs occasionally. It may be that the pressure in the common rail pump is absolutely greater than the pressure of the oil pump.How does the oil come through? Very simple, the oil pump and the lubricating oil return of the camshaft The failed seal is introduced into the inlet of the oil pump. Can this seal be removed and replaced? You can replace it, check the part number clearly, disassemble the fuel pump, and replace the failed seal.
