Excavator hydraulic oil temperature will inevitably cause high water temperature. When the hydraulic oil radiator is blocked, it will cause the hydraulic oil to heat up. Moreover, the air flow will be affected after the blockage, and the water temperature will further increase. Share the troubleshooting of high water temperature and slow speed of excavator!
Failure phenomenon: A Komatsu PC460LC-8 excavator has an altitude of 200, the speed of the excavator is very slow, and the water temperature is still 104 degrees. The excavator has been replaced with a new fan motor, and the fan pump has also been replaced.
The water temperature of the excavator will slow down as soon as it is high, and the slower the heat is, what is the problem? It may be that the heat dissipation is not enough, or the water tank is blocked. Some excavators have overheating protection. To protect the car from being burnt out.
Komatsu PC460LC-8 excavator water temperature high speed and slow fault inspection analysis:
1. Make sure there is no problem with the circuit? No problem with the water temperature sensor circuit? You can short-circuit the test. The water temperature sensor can be exchanged and tried.
2. Determine whether the water in the tank is water or antifreeze? If it is water, it is possible that the engine is rusting and blocking the water channel, and at the same time check the radiator.
3. Dismantle the thermostat. See if it is not high temperature? Check the heat dissipation effect, whether the outer seal is off, resulting in poor heat dissipation.
4. Is there a sponge or other stuff between the water tank and the radiator? If not, replace the water tank with 5 layers of tubes.
5. Is the pressure of the fan pump measured normally? It is estimated that it is an air conditioning problem. In the plateau coolant boiling point is reduced, it is necessary to adopt a closed circulation system, increase the heat dissipation area and increase the air flow rate and other measures to reduce the temperature.
6. The fan clutch pressure is not enough and the speed can not be reached. When working in a high altitude place, the engine air intake is not enough.
