The Reason For The Slow Working Speed Of Excavator

The main reason for the slow working speed of excavator is the engine power decline and hydraulic system leakage caused by the wear of all parts of the whole machine.

The hydraulic pump of the excavator is the plunger variable pump. After the working time is set, the internal hydraulic components of the pump (cylinder block, Douse, valve plate, nine-hole plate, turtle back, etc.) will inevitably produce excessive wear, which will cause internal leakage, and the parameters are not coordinated, resulting in insufficient flow, high oil temperature and slow working speed. At this time, it is necessary to overhaul the whole machine, repair and replace the parts that exceed the limit of wear.

But if the excavator does not suddenly slow down after working for a long time, the following aspects need to be checked. First check whether the circuit fuse is open or short circuit, then check whether the pilot pressure is normal, and then see whether the servo control valve - servo piston is stuck and whether the distributor is disconnected, and finally remove the hydraulic pump for data measurement, to confirm the problem of the excavator.