Date: Oct 09, 2022　Views:
There will be various failures during the use of the excavator. Recently, the owner asked, what should I do if the excavator walks powerfully while walking weakly? Hengwang tells you the most practical way to deal with it.
If the excavator wants to overcome the difficulties and ensure the smoothness of every action, there must be no jamming whether it is walking or rotating. But excavators are steel giants composed of precision parts after all, and sometimes the workload is heavy, and it is inevitable that there will be failures. Different from the failure of a single action, when all the operations of the excavator appear slow and powerless, many machine friends do not know what to do.
When the excavator is walking powerfully and walking weakly, you can check and deal with the fault by comparing the following methods to help your favorite machine in a healthy state!
The reasons for the failure are as follows:
First, the main relief valve is worn out. The main relief valve (also called the main and auxiliary guns) controls the main relief pressure of the whole vehicle. If there is a problem of wear or card issuance, all operations of the whole vehicle will be affected. If it is often stuck in a certain position, it will cause the whole vehicle to be slow and weak, and in severe cases, it will be accompanied by a harsh overflow sound, which will cause the excavator to fail to work normally.
Secondly, if the hydraulic oil is not replaced in time according to the actual situation or maintenance time, it will lead to the deterioration of the hydraulic oil or the lack of hydraulic oil and the blockage of the hydraulic oil filter element, which will result in insufficient oil absorption of the hydraulic pump and reduced oil supply from the hydraulic pump to the distribution valve. This is also one of the reasons why the excavator moves slowly and walks weakly.
Insufficient pilot pressure is also a problem that cannot be ignored. When the pilot pump is damaged or the pilot filter element is blocked, it will directly cause the pilot pressure to be too low, so that the operating handle or the valve stem of the foot valve cannot be fully opened, which will also affect the action of the excavator.
Finally, you can pay attention to the use of the hydraulic pump and observe whether the plunger is worn. If it is, it will not only cause the failure of the whole car to move slowly and weakly, but also cause high oil temperature. If copper dust impurities are found when checking the oil return filter element, it is useless to adjust the power of the hydraulic pump anyway.
In the case of serious wear, in addition to repairing and replacing the hydraulic pump, the hydraulic oil pipeline should be cleaned in time, otherwise the excavator will continue to be high temperature and wear the hydraulic parts again.
The excavator walking powerfully and walking weakly is just a fault condition, which is only for your reference, and the specific situation is analyzed in detail. You can analyze the fault according to the state of your excavator.