Brake problem

it is simplified test. full test must be done with test guuge set.

 

Yes you are right Pablo.

Technically , supply pressure (port 11) need be the same or less than pressure supplied from handbrake (port 43) for park brake to be totally disabled service brake on the trailer. if Pressure supplied from hand brake is less then the supply pressure , the difference will be output into the service brake line to the trailer. keeping in mind also the predominance setting on the trailer control however.

Thanks Pablo. You know your air systems.

 

predominance is usually 0.2 BAR.