Excavator running deviation is also called excavator walking deviation. Generally, the walking track is deviated to the left or right, which seriously affects work efficiency. The following is the maintenance method for the cause of excavator walking deviation.
A Hitachi ZX330-5A excavator runs off on the left, slow uphill on the left, and fast downhill. The pressure is 310 before and after the left and right, cross walking can not move, and sometimes the hot car can not rotate.
Failure analysis:
1. It may be that the chains on both sides of the excavator are not tight. The reason for the excavator's walking pump may be blocked by debris inside, so the recovery is not in place and the excavator's walking deviation phenomenon occurs.
2. The flow rate of the pump before and after the excavator is incorrect or the valve is distributing. Check the oil separation cup in the middle of the turntable. There is an o-shaped internal leakage inside which causes insufficient pressure while walking, which leads to speed.
3. Walking solenoid valve problem. Distributing valve running pressure is inconsistent. Walking main gun is worn.
4. The elasticity of the crawler or the travel motor, the oil path is blocked, and the travel motor is adjustable.
5. It is likely that the leakage of the hungry walking motor is too slow, the volumetric efficiency is reduced, and the volumetric displacement is reduced. The specific reason must be further checked the hydraulic circuit.
malfunction repair:
1. Let ’s see if the excavator is running seriously. Is the tightness of the left and right tracks the same?
2. Is the pressure of the two sets of walking pumps the same? In general, the excursion of the excavator is a pressure problem. It can be adjusted, but it also depends on whether the walking pumps on both sides are good? Supplement: there is a deviation It is running straight when going straight, but when turning alone, the slow side is also very strong. This phenomenon is that there is a problem with the oil seal in the walking oil separator.
