The deviation of the excavator is also called the deviation of the excavator. Generally, the walking track deviates to the left or right, which seriously affects the work efficiency. The following is the maintenance methods for the causes of the deviation of the excavator.
A Hitachi zx330-5a excavator deviates when walking on the left. When walking on the left, it goes uphill slowly and downhill quickly. The pressure is 310 from left to right. It can't move when walking cross. Sometimes the hot car can't turn when turning.
Failure cause analysis:
1. It may be that the chain on both sides of the excavator is not the same The reason for the excavator traveling pump may be that there are sundries blocking it, so the reply is not in place, and the excavator traveling deviates.
2. The flow of the front and rear pumps of the excavator is incorrect or there is a problem with the distribution valve Check the oil distribution cup in the middle of the rotary table. There is an O-shaped internal leakage inside, which leads to insufficient walking pressure at the same time, resulting in speed at the same time.
3. Problem with travel solenoid valve The travel pressure of distribution valve is inconsistent The traveling main gun is worn.
4. The tightness of the crawler or the travel motor, or the oil circuit is blocked, or the travel motor, can be adjusted.
5. It is likely that the traveling motor is slow and the leakage is too large, the volumetric efficiency is reduced, resulting in a small displacement. The specific reason should be further checked on the hydraulic circuit.
Troubleshooting:
1. First, check whether the digger deviates seriously? Check whether the left and right crawlers have the same tightness?
2. Check whether the pressure of the two groups of walking pumps is the same? In general, the deviation of the excavator is a pressure problem. Just adjust it, but it also depends on whether the walking pumps on both sides are good? Add: one kind of deviation is deviation when going straight, but when turning alone, the slow side is also very powerful. This phenomenon is that there is a problem with the oil seal in the walking oil separator.
