PC200 excavator loader solenoid valve 709-70-55100 excavator auxiliary gun

   The reasons for the failure of the excavator's unilateral walking are as follows :1 excavator's solenoid valve is faulty; 2 excavator hydraulic pump is faulty.(The pump controlling the excavator's walking side has wear, which may be the fault of the pump head and swash plate)3 The walking pilot pressure is wrong.4 The fault of the walking motor leads to the failure of the excavator's unilateral walking and the oil seal of the excavator's center rotating joint is damaged.6 The chain on one side of the excavator is stuck.7 Unilateral overflow. The above are several common reasons that lead to the failure of the excavator's unilateral walking, and the specific reason is which one needs the excavator master to check the fault. Fault inspection steps: first, check the walking pilot pressure value of the excavator; second, check whether the pump pressure value before and after the excavator is the same; third, check whether the oil seal of the center rotary joint on the side of the unilateral walking tank of the excavator is damaged; fourth, check whether there is any abnormal sound in the walking motor; and finally check the chain and overflow pressure value of the excavator