As there are many reasons for holding the machine and car by excavator, and it involves a wide range, only four cases are listed below for your reference. I hope you can understand it after reading it.
Fault phenomenon: engine stalls and holds the car.
Fault inspection: the engine power is insufficient. After pulling out the electronic proportional valve, the engine does not slow down and hold the car. It is judged that the fuel supply of the engine is insufficient
Troubleshooting: after cleaning the oil circuit of the whole vehicle and cleaning the air filter element, the stall phenomenon still exists. Judge the problem of the fuel pump. After replacing the fuel pump, the stall and vehicle holding phenomenon are eliminated, and the excavator works normally.
Fault phenomenon: engine stalls and holds the car
Fault inspection: after pulling out the electronic proportional valve, the engine works normally, and it is judged that the fuel supply of the engine is insufficient.
Troubleshooting: clean the oil circuit of the whole vehicle, clean the air filter element, and adjust the flameout solenoid valve. After that, the phenomenon of stalling and holding the vehicle is eliminated and works normally.
Fault phenomenon: Engine holding, stall
Fault inspection: after pulling out the electronic proportional valve, the engine stalls and puzzles the vehicle. It is judged that the diesel oil circuit is unobstructed. After cleaning the oil circuit and air filter element, the stall phenomenon is eliminated and works normally.
