Cold car and hot car seriously affect the normal operation of excavator, and may also damage the parts of excavator. Summarize the following reasons for hot running of excavators:

1 It may be that the dilution of hydraulic oil slows down after the oil temperature of the excavator rises, resulting in the hot car of the excavator being stuck. Can you check whether the hydraulic oil used by the following excavators is deteriorated first? Check the following hydraulic oil filter elements (including oil return filter elements) and replace the hydraulic oil in time.

In addition to hydraulic oil, it is also possible that the hydraulic oil of excavator leaks due to the wear of hydraulic pump. Need to check whether the hydraulic pump is seriously worn.

The failure of diesel pump of excavator may also lead to the jam of hot car of excavator.

4 If the grade and quality of the hydraulic oil used by the excavator do not meet the requirements, it may also lead to the fever of the excavator. Therefore, the hydraulic oil matching the excavator model must be used, and different hydraulic oils cannot be mixed.

5 mismatch between hydraulic pump and excavator distribution valve will also lead to excavator hot car failure. Under normal circumstances, it is not recommended that the owner or driver manually adjust the pressure and flow.

Steps to solve the hot truck of excavator:

When the hot car of the excavator appears in use, we should first observe whether there is black smoke in the excavator. If there is black smoke, it means that there may be problems with the excavator oil circuit, oil transfer pump, engine air inlet and engine third filter, which need to be inspected in detail. If there is no black smoke, check whether the excavator oil is deteriorated or dirty, and whether there is oil leakage inside the hydraulic system.

Then, check the specific engine speed drop? Generally, it is normal to turn the engine within 200, and it may cause traffic jam if it exceeds 200. If the engine speed drops, it is necessary to adjust the working power of the engine to match the power of the hydraulic pump in order to eliminate the fault. /cp/sy85c.html

The hot car of excavator may also be caused by hydraulic system failure. The common reasons are: excessive pump power, wear of pump regulator, excessive pressure and flow of pump valve group, wear of internal components of pump, etc.