Because excavators hold back machines, there are many reasons for holding down cars, and they cover a wide range of areas. Therefore, only four cases are listed below for your reference. I hope you have seen them only to understand.
Failure phenomenon: engine stall, hold back.
Fault check: The engine power is insufficient, the engine does not drop speed after pulling out the electronic proportional valve, does not hold back the vehicle, and judges that the engine fuel supply is insufficient
Troubleshooting: After cleaning the oil circuit of the whole vehicle, the stall phenomenon still exists after cleaning the air filter element, judge the fuel pump problem, after replacing the fuel pump, the stall, the phenomenon of holding back is eliminated, and the excavator works normally.
Failure phenomenon: engine stall, hold back
Fault check: After unplugging the electronic proportional valve, the engine works normally, and it is judged that the engine fuel supply is insufficient.
Troubleshooting: After cleaning the vehicle's oil circuit, cleaning the air filter, and adjusting the flameout solenoid valve, the stall and vehicle holding phenomenon are eliminated, and the work is normal.
Failure phenomenon: engine holding back, stall
Fault check: After unplugging the electronic proportional valve, the engine stalls and the phenomenon of confusing the car exists. It is judged that the diesel oil passage is clear. After cleaning the oil passage and the air filter element, the stall phenomenon is eliminated and the work is normal.
