Recently, Master Li received several inquiries about "why is the excavator walking?" The editor asked curiously what caused the excavator's walking failure? Master Li patiently gave the following explanation to the editor.
Failure case: What happened to the Kobelco excavator
Fault model: Kobelco SK135 crawler excavator. Phenomenon: Kobelco excavator deflects the excavator to the left. The specific performance is that the excavator walks 30 meters forward, and the excavator deflects left.
Master Li of our factory based on years of excavator walking deviation maintenance experience, analysis may be caused by the following reasons for Kobelco excavator walking deviation:
1 It may be that there is a problem with the center rotary joint of the excavator.
2 It is also possible that the left and right travel motors of the excavator are faulty.
3 or the excavator's walking deviation caused by the failure of the excavator's pilot control valve and walking main control valve.
4 The failure of the walking balance valve and walking overload valve of the excavator will also cause the walking deviation of the excavator. 5 In addition to the above reasons, there may be plungers, plunger sleeves, valve plates, etc. of the excavator hydraulic pump Problems.
6 Finally, there may be excavator walking deviation caused by the excavator hydraulic pump regulator plunger and cylinder liner wear.
The above are just a few common causes of Kobelco excavator's walking and running faults. The specific reason is that the excavator's field fault check is needed.
Supplement:
If the hydraulic pump of the excavator is faulty, it will cause the internal leakage of the excavator, and the system pressure will not reach the specified value (29.5MPA), so that the excavator will run to the left.
