Troubleshooting for "vibration of outlet pipe of main pump of Volvo 210 hydraulic excavator":
1 field test machine found that the main pump outlet vibration was serious after excavator operation.
2 dismantling the main pump, found that the distributor plate and cylinder block were worn out again and again, and no other abnormalities were found in the other parts of the pump.
3 before the analysis was also due to the replacement of the disks and cylinder wear and the replacement of the new disks and cylinders, but less than 80 hours of wear, the site carefully looked at the worn components. It was doubted that the screws in the full flow filter (the copper net filter of the hydraulic tank) were dropped and the suction fluid pressure pump was caused. Then look at the wear of the pump gallbladder, is a circular shape, and with the oil plate did not hurt, then in the matching oil tray seat there card a larger foreign body, when the pump gallbladder turns on the pump bile to form a circular cycle damage, too small to breathe the pump bile, and then hit the oil disk will cause circular damage, and with the oil plate did not hurt.
4 then dismantling, it was found that the locking screw card of the hydraulic oil copper grid was in the oil tray seat, and the cause of the failure was also caused. The maintenance method also had, the test machine was removed, the vibration fault of the main pump out of the Volvo 210 hydraulic excavator was eliminated.
So far, Qinghai Xining Deng boss "Volvo 210 hydraulic excavator main pump oil pipe vibration" failure repair.
Summary of vibration failure of main oil pump of Volvo 210 hydraulic excavator:
Before the repair of a Komatsu 200-7 excavator is also the fault, when the foreign body dropped to the oil tank and the pump of the connection of the submarine pipe inside, when working, the foreign object was sucked between the pump and the oil plate, but could not go into the oil pipe and dropped back into the oil pipe.
