After the main vehicle and the trailer gas connections are connected, the semitrailer on the tractor shall be unscrewed, and the gas path separation switch shall be connected, so as to know where the switch is located
When the gas connectors are communicated with each other, the semitrailer on the tractor shall be unscrewed, and the gas path shall be connected with the separation switch so as to be in a ventilation state. Otherwise, the gas supply system of the semi-trailer can not be supplied, and the braking system can not work. Three. Start the engine, observe the pressure gauge in the cab, and increase the pressure in the tractor and the semi-trailer cylinder to the required pressure. Four. Check whether the gas path leaks and check whether the brake system works properly. Seven socket cable 5. tractor connection plug is inserted into the front end of the semi-trailer until seven in the clamping block on the bolt. Check whether the electrodes are well joined and make sure that the lights such as the side lights and tail lamps work properly
The electrical connection between the car and the semi-trailer is as follows: 1. Connect the two trachea joints of the tractor (commonly known as handshaking) to the two tracheal couplings on the semi-trailer. The gas supply line of the tractor at this time. Connect with the air supply pipeline of the semi-trailer, the control line of the tractor is connected with the control pipe of the semi-trailer (note the color of the joint: install with the hue, don't install the reverse).
The height of the pull off pin of the Semi Trailer Trailer refers to the height of the traction pin. This height is required to fit the height of the overhead saddle. Therefore, it is important to pay attention to the height of the front saddle when designing this height.