When the auxiliary brake valve button is pressed, the engine does not stop, the flaps in the exhaust pipes do not turn, the trailer does not brake

In this article we will consider the pneumatic drive of trailer brakes, i.e. the interaction and malfunctions of devices installed on the tractor and on the trailer

To diagnose the pneumatic drive of brake systems, you must have at least one control pressure gauge and use the control outlet valves available on the vehicle

On KamAZ-5320 vehicles, air enters the emergency brake release circuit (Fig. 1) with the engine running directly from the compressor through triple safety valve 13

As the compressor operates, the cylinder-piston group wears out and the tightness of the valves is compromised

Check the condition and operation of the platform lift limiting valve.

Fasten the lift limiting valve to the subframe crossmember bracket. The valve stem must not be bent.