First, we first drive the excavator to an open space. The purpose is to give the excavator room to slew, then straighten the small arm with the bucket one meter above the ground. The engine is stopped and the residual pressure is released.
Second, someone pushes the bucket (bucket off the ground) to move the excavator from side to side. The person on the machine determines whether the abnormal sound is coming from the rotating gearbox or the rotating gear ring.
Third, still use the water pump to push the excavator rotating gear ring or make abnormal sound, turn off the engine before removing the oil pipe to shut down, remove the rotating gear ring and bring the excavator back to the upper body of the moveable mini excavator.
Fourth, the rotating gear ring will be removed and sent to a professional bearing factory. After grinding the ball track by increasing the size of the ball, it is normal to reinstall the rotating gear ring into the hardening device of the mini excavator.
How to deal with the power loss of excavator hydraulic pump?
The most common failure of hydraulic pumps is the wear of the pump body and gears (the basic type of component failure). The main reason for mechanical losses is that when oil flows in the pump, viscous resistance due to the viscosity of the liquid also causes mechanical losses. This loss is related to the viscosity of the oil and pump speed. The greater the viscosity of the oil, the higher the pump speed, the greater the mechanical loss.
For the above reasons, the actual input power of the pump (the amount of work done by the reference in unit time) is greater than the theoretical required power. The ratio between the theoretical input power and the actual input power of the hydraulic pump is called mechanical efficiency, which indicates the degree of power loss.
The ratio of the output power of the hydraulic pump to the input power is called the total efficiency of the hydraulic pump. When the hydraulic pump works, there is mechanical friction between the bearing and the shaft, between the shaft and the seal, between the vane and the inner wall of the pump and other relative moving parts.
