What is arm dropping of excavator? The arm of the excavator is like a person's arm is unable to lift, and the whole machine is like a broken arm, which has a serious impact on the maneuverability during construction. Why does the excavator drop its arm? What are the reasons?
Reasons for excavator arm dropping failure:
1. Problems with hydraulic oil. The arm drops due to the hydraulic oil fault. The arm drops when the car is cold and the car is hot. It is likely that the hydraulic oil is faulty.
2. The oil seal of the oil cylinder is broken. The hydraulic cylinder of the excavator fails, especially the oil seal of the oil cylinder is damaged or aged, resulting in internal leakage of the oil seal.
Related reading: These excavator operations are very easy to damage the oil cylinder. Don't do this!
3. The distributor is worn and depressurized. Boom boom and jib boom caused by blockage of distribution valve hole, wear of valve core, excessive clearance of valve core, wear and damage of main safety valve of distribution valve.
4. The oil circuit leaks internally.
A minor exception is a "help" signal sent by the machine parts to everyone. At this time, we can't make do with the hard work, otherwise we will drag the problem that was not very serious into a major failure. It costs little to maintain the machine, so the time lost due to the shutdown seems to be lost!
