What should I do if the hydraulic oil temperature of excavator is high?

The investigation and handling can be carried out in the following ways.

1, hydraulic oil inspection

After all the above work is checked to be normal, confirm whether the engine and hydraulic system are matched and there is no obvious overload phenomenon, and check whether the quality and model of hydraulic oil are qualified. Unqualified hydraulic oil will also lead to excessive temperature rise due to insufficient oil density.

2. Hydraulic oil radiator inspection

If it is confirmed that the oil temperature is really too high, check whether the radiator is blocked by sundries, usually the area between the hydraulic oil radiator and the water tank. If there are too many sundries, please clean them up before the test.

3. Check whether the sensor is normal.

When the oil temperature gives an alarm, we must first determine whether the oil temperature really rises too high. You can approach the oil tank or oil tank with your hands (you can't touch it directly if it is too hot to avoid scalding) and slowly feel the temperature change around the oil tank.

Finally, if you can touch the oil cylinder, it means that the oil temperature is within the normal range. Check the oil temperature sensor and unplug it to see if there is any alarm. If there is still an alarm, the circuit or computer board or display screen needs to be repaired. If there is no alarm after removing the oil temperature sensor, check the oil temperature sensor.

4, hot air and cold air isolation

If the fault still exists, you can open the hood or a side door to help dissipate heat. When the temperature turns normal, you need to check the isolation between the hot air area and the cold air area, whether the vent leaks and whether the exhaust direction is affected.

Selection of hydraulic oil varieties When selecting hydraulic oil for hydraulic equipment according to working environment and working conditions, we should comprehensively consider and judge working pressure, temperature, working environment, hydraulic system and component structure, materials and economy. Environmental factors include: above ground, underground, indoor, outdoor, coastal, cold area, high temperature and open flame.

The working temperature of hydraulic oil in hydraulic system mainly requires the viscosity temperature and thermal stability of hydraulic oil. Use L-HH, L-HL, l-hm hydraulic oil at-10-90℃, and use l-HV, l-hs below-10℃; use high-quality L-HM, L-HV, L-HS at >: 90℃.

The general relationship between ambient temperature and working temperature is as follows: the normal working temperature of hydraulic equipment in the workshop is higher than the ambient temperature15-25℃; The hydraulic equipment is outside the temperate zone, and the high temperature is 25-38℃; In tropical outdoor sunlight, the temperature is 40-50℃.

Refer to Baidu Encyclopedia-Hydraulic Oil for the above contents?