Fault phenomenon:
Excavator operations have high oil temperature, affecting the normal work of excavators.
Excavator oil temperature high fault effect:
1 The oil temperature will cause the excavator components to generate thermal deformation, and the system will lose its ability to work hard.
2 Excavator oil temperature results in a decrease in the viscosity of hydraulic oil, increased leakage, reducing the life of the excavator.
3 Hydraulic oil rises high excavator seal failure, generating oil leakage.
4 Epoxy asphalt and gum are oxidized in oil temperature high hydraulic oil, which causes the hydraulic valve flow to unstabilize and affect the normal operation of the excavator.
Causes of excavator oil temperature high failure:
1 Excavator hydraulic system design does not meet the specifications.
2 The oil circuit design is unreasonable. For example, the pipe diameter of the tube is small, the joints are more, and the curved places will make the hydraulic oil to increase the resistance, resulting in the high temperature of the excavator.
3 The hydraulic oil used is not suitable.
4 In the hydraulic system enters the air.
Causes of excavator oil temperature high failure:
1 Excavator hydraulic system design does not meet the specifications.
2 The oil circuit design is unreasonable. For example, the pipe diameter of the tube is small, the joints are more, and the curved places will make the hydraulic oil to increase the resistance, resulting in the high temperature of the excavator.
3 The hydraulic oil used is not suitable.
4 In the hydraulic system enters the air.
5 Hydraulic oil used is contaminated.
6 Excavator hydraulic cooling system fault.
7 Excavator parts wear, such as distribution plate wear, plunger wear, reverse valve wear or the wear of the stem gap seal may result in high exhaustion oil temperature.
Excavator oil temperature high fault repair:
1 When designing the excavator hydraulic system, it is necessary to design a reasonable design. When designing the tubing, the joints will be as appropriate, and there is also a pipe diameter.
2 Hydraulic oils used by excavators must be strictly managed to avoid contamination. Also use of hydraulic oils must match the excavator model.
3 Under normal circumstances, excavator hydraulic oil should be replaced by hydraulic oil in use for more than 1,000 hours, and the oil filter should be more than 120 mes.
4 When the excavator oil is high, it is necessary to know whether it is caused by a cooling system failure. You can directly check that the excavator's radiator is faulty? The tightness of the fan belt? How much is the coolant?
5 Also need to replace which easy wear parts. In general, the hydraulic pumps and hydraulic motors of the import excavator should be replaced after 5-6 years, while the time is relatively short, the time is probably Replace it for three years.
