The hydraulic oil used by the excavator is too thin. You can drain some of the hydraulic oil, then heat it and put an appropriate amount of lubricating oil into it. When recently added, the shovel works. Excavator to solve the problem of high water temperature and slow movement without. 2 It is also possible that the excavator's oil pump is defective. You can check the following oil pumps for wear to see if the high water temperature of the excavator is caused by wear. Or you can have your oil pump calibrated, which usually only costs a few hundred dollars. 3 Or it may be due to a failure of the engine of the excavator itself. 4. Problems with the excavator radiator can also cause high water temperature failure, which can result in high excavator water temperature and slow acting failure. 5 Another possibility is that vYour water tank is dirty, the water channel is clogged, or your hydraulic oil hasn't been changed in a long time. 6. Tightening of the excavator fan belt is improper. A belt that is too loose or too tight will cause the excavator to malfunction due to high water temperature and slow operation. In addition, you must also use the excavator according to regulations and carry out daily maintenance of the excavator. Check whether the excavator's water tank is short of water, lack of oil, hydraulic oil deteriorated, etc., and you should also do a good job of maintaining the excavator . Regular maintenance can better avoid the occurrence of Doosan excavator breakdown due to high water temperature and slow movement. Reasons: 1. The water temperature is high and other actions are normal. 2. The water temperature is basically normal once the thermostatt removed. 3. The high water temperature alarm occurred again 30 hours after replacing the water pump. 4. The attached water tank is overflowing. 5. Since the water pump and EGR cooler were replaced last time, the possibility of malfunction of these components is excluded. 6. If the water tank is clogged. 7. If the water tank and its associated pipes are leaking. 8. The motor body is defective. 9. Prepare on site to confirm the above conditions. Solution: 1. After we arrived at the scene, it was found that the water tank attached to the machine was leaking water. So it was inferred that the water tank might be clogged and the water tank cover was leaking. 2. The water tank was cleaned on site and no blockages or leaks were found in the water tank or its water lines. 3. When checking the water tank cover, it was found that the coverThe water tank was leaking. Since there were no new parts to replace, we simply field treated it to make it waterproof and then installed it. a test and observed that the fault was eliminated within one day.
Diesel generator Fault characteristics and causes of excessive outlet water temperature:
1 There is air in the water line. : After starting the diesel generator, the outlet pipe does not come out or the water volume is very low and the water temperature continues to rise.
Loosen the thermometer seal on the water pipe, bleed the air until the water flows smoothly, and tighten the water pipe joints.
2. Insufficient circulating water volume: Under high load, the outlet water temperature is too high and the engine oil temperature also rises
(1), the fresh water pump or the fan speed cannot reach the speed
(2). The fresh water pump impeller is damaged.
(3) The gap between the fresh water pump impeller and the hull is too large.
(4) . In open cycle, the water source. The water level is too low and the fresh water pump cannot suck water.
(5). water is insufficient
(6) The water pipe is blocked
Treatment method:
1.Increase the water source level water and add cooling water
Clean the pipes and remove scale in the cooling water channels
2 In the closed cycle, there is too much scale on the surface. of the radiator, which affects heat dissipation
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Remove scale and clean the surface
3. The thermostat is broken
Replace it
4. The water temperature meter is incorrect
< p>Repair or replace5 There are cracks at the shoulder of the cylinder liner: at this time, cooling waternt is present. the radiator is boiling
Replace the cylinder liner