Bucket fault causes:
1¡¢Right PPC valve arm passage blockage.
2¡¢Bucket control valve spool wear.
3¡¢Bucket regeneration valve damage compensation.
4¡¢Carter digging machine bucket suction spool valve spool jammed or wear, or the bucket valve and suction valve seal is damaged.
5¡¢LS shuttle valve spare valve failure.
6¡¢Bucket oil plug, oil is not smooth.
Fault repair methods:
1¡¢Bucket joystick position, PPC output pressure of 0; bucket excavation or unloading, PPC output pressure 2.9mpa.
2¡¢Check the digging machine in the bucket control valve spool no wear, bucket valve and suction valve spool without catching seals also undamaged.
3¡¢Check the spare valve control valve LS shuttle valve is working properly.
4¡¢Close digging machine engine, the engine at high idle speed operation bucket excavation operation, the measured amount of oil overflow digging bucket cylinder of 15cc / min, and the provisions of 20cc / min low fault repair measures: clean up the dirt, dredge bucket digging machine oil passage
