How to use the handshaking valve switch of semi-trailer

Find the valve hole, open it, pick up the valve body, find the inserted slot, and be sure to connect it firmly.

Connect the two gas connectors on the tractor to the two gas connectors on the semi-trailer. Be careful not to connect them wrongly. The gas connector (red) on the charging pipeline is on the right side of the semi-trailer, and the gas connector (yellow) on the control pipeline is on the left side (the handshake is consistent with the color connection of the gas pipeline).

After the gas connector is connected, unscrew the gas path connection and separation switch of the tractor's upper semi-trailer to make the gas path in a ventilated state, otherwise gas cannot be supplied to the semi-trailer braking system, and the braking system will not work.

Start the engine, observe the barometer in the cab, and raise the pressure of the air tank of the tractor and semi-trailer to the specified pressure (above 600kpa).