Excavator final drive walking, turning without action

The excavator is a very dangerous and difficult project with a series of movements such as walking and turning. It is for this reason that the action of the excavator cannot be traced.

Therefore, when all the movements of the excavator can not be done in an instant, it is conceivable that everyone will be more alarmed. Today, we summarize the most actionless situation in the daily construction process, which is very difficult to handle. Check and handle the fault!

Excavator walking, turning without action failure reasons:

First, the coupling between the engine and the final drives is damaged, resulting in no power output of the hydraulic pump. This phenomenon is easier to check. It is mainly felt whether the hydraulic pump pipeline has pulse-type vibration.

If not, look again at whether the hydraulic oil in the hydraulic tank is circulating. If the oil pipe does not vibrate and the hydraulic oil does not circulate, then the coupling is definitely damaged.

Second, if the lack of hydraulic oil will cause the whole car to not move, you can observe whether the hydraulic oil is enough. If it is insufficient, you need to add hydraulic oil. If it is suddenly lack of hydraulic oil, you must first add hydraulic oil. See where the oil spill is caused.

Commonly, the hydraulic oil pipe and the final drive motors are leaking oil. After finding the oil leakage position, it is repaired. Finally, the hydraulic oil is no problem.

Third, the main relief valve is always open. This situation is mainly caused by more impurities in the hydraulic oil, which causes the main relief valve to be stuck in the normally open state. Therefore, the excavator does not move anyway regardless of the handle.

Fourth, the safety solenoid valve and the valve core damage will also lead to no action. If the safety solenoid valve is damaged and cannot be sucked into the valve core, the pilot system will have no control oil, so there is no way to control the spool of the main control valve. There will be no action.

If the safety solenoid valve spool is stuck, the spool will not move regardless of whether the safety solenoid valve is good or bad. Similarly, the pilot system will not have control oil and will not allow the excavator to work.

Fifth, if the safety switch is damaged, then there will be no control electric signal to reach the safety solenoid valve to suck the valve core. It will also cause the excavator travel motors to not move. If you encounter this problem, you can directly replace the new one. use.

to sum up:

In the daily construction process, if there is such a troublesome failure that the whole car has no action, most drivers or bosses will choose to stop directly and wait for the maintenance personnel to come.

But in fact, as long as we observe the fault phenomenon thoroughly, we can completely check the cause of the fault by ourselves, which can save time and reduce the loss caused by the fault. https://www.spfinaldrives.com/

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