Answer:

What you said about the high oil temperature of the loader still lacks a condition, that is, whether it has been high recently or always in the same environment?

I use an abstract method to explain some reasons for the high oil temperature.

1. When the outdoor temperature is high, the high temperature in summer affects the fuel tank.

2. The heat of the engine is transferred to the fuel tank.

3. The internal wear of the oil pump leads to high temperature leakage.

4. Wear of other hydraulic components and high temperature caused by internal leakage.

The viscosity of oil is too low.

The above five reasons may cause the fuel tank to heat up. If the oil pump or hydraulic valve can be replaced in items 3 and 4, it will not be 90 degrees. If it is replaced by 68 # antiwear hydraulic oil, it will also reduce the oil temperature. If the temperature cannot rise to 90 degrees simply because of the weather, the engine heat may be high. I wonder if there is thermal insulation protection between them. If not, some heat insulation measures can be added. If all five items are improved, the highest temperature in summer will be 50-60 degrees, and it will not be higher.

The high temperature of 90 degrees may come from the sum of five situations.