The failure case of Komatsu excavator boom recovery is weak, and the failure reason is described. A Komatsu excavator suddenly appears the phenomenon of excavator boom recovery weakness when working
Boom weakness can generally be divided into: Boom recovery weakness, boom extension weakness, boom slow motion weakness, boom lifting weakness, hot truck boom weakness, boom and bucket weakness, etc.
Frequently repaired Komatsu models include: Komatsu cx240b, Komatsu cx210blc, Komatsu cx360b, Komatsu cx330, etc.
What about Komatsu excavator boom recovery failure? Fault cause:
1. The abnormal pressure of the main pump of the excavator will also cause the boom to recover weakly
2. The overflow valve at the oil port on the boom of the excavator has a fault, which causes the boom to be unable to recover
3. The boom flow regeneration check valve of the excavator is not tightly closed, resulting in weak boom recovery
What about Komatsu excavator boom recovery failure? Fault repair:
1. Replace the internal and external oil outlet overflow valves of the boom to see if the recovery is still weak? If it disappears, it means that there is no problem with the main overflow valve
2. The boom flow regeneration check valve was disassembled for inspection, and no abnormality was found that could lead to boom recovery failure
3. Finally, the main pump was disassembled for inspection, and it was found that the pressure was not enough. After inspection, it was found that some parts were worn to cause internal leakage, which caused the boom to be unable to recover
