To open a excavator, it is speed and passion, if the excavator is too slow, as slow as playing Tai Chi, as with an old car, more patience is also polished, not to mention the delay. Waste of time is a waste of money and waste of life. Then what's the reason for the slow motion of the excavator, what to do? Look at it.
The action of the excavator is slow: single action is slow; the whole vehicle / vehicle is slow; the refrigerator is normal and the heat engine is slow.
Single movements are slow, such as walking, reversing, lifting the big arm and recovering the bucket.
1. The relief valve pressure of the excavator related components is too low to be tested.
2, pump, low pressure sensor, multi-channel valve fault;
3, related solenoid valve failure, valve core card.
The slow cause of the whole car / vehicle
1, whether on time maintenance, hydraulic oil is not replaced on time; hydraulic oil road is blocked, please check the system pressure at idle speed, check whether the oil filter cartridge is blocked.
2, the engine output power is too low, the power shortage, please combine DX data to analyze the output of the engine, all cylinders can work at the same time; check whether the engine has black smoke or not, if the nozzle wear is serious, it will also cause the engine power to decline;
3, the output of the hydraulic pump is insufficient, and the service diagnostic system can be tested for related pressure.
4, the lack of pilot pressure causes insufficient pressure to open the spool, resulting in insufficient flow and slow action.
5, circuit related problems: Excavator CPU, high and low voltage sensors, solenoid valves and line failures.
Normal cold machine, slow cause of heat engine
1, oil is too dirty, need to be replaced; check whether the oil filter screen has copper scraps, causing the main pump wear, need to disassemble view;
2. Pilot filter element, oil return filter element and oil absorption filter element are blocked.
3. The main pump regulator has oil sludge on the servo piston, and the inclined plate can not be adjusted. The main pump is always operated in small displacement, and the flow rate is small.
If the excavators are slow in action, the excavators are going to investigate them according to the above reasons.
