Trailer brakes don't always work as they're designed to. When they don't, overall braking forces are reduced and vehicle-stopping distances increased. The Canadian Maintenance Council noted that ...

The key to solving this high-pressure imbalance lies with the crack pressure on the trailer. Crack pressure, expressed in psi, is the air required to force a valve open when air brakes are applied.

The two push-pull valves -- the yellow one for tractor ... which brings a moving vehicle to a controlled stop if the parking brake is activated. Trailer Air Warning indicates the status of the ...

Most air-brake issues come about as a result of water ... Yellow – provides the signal to the trailer valve telling it how much air to let through to provide progressive braking force.

A two-way check valve senses the air pressure in both the primary and secondary air systems and allows the system with the highest pressure to actuate the trailer brakes (if present). Primary air ...

and make sure the trailer supply valve is closed. Exit the cab and disconnect the service line from the trailer. Enter the cab, apply the brakes and observe whether air is escaping from the service ...

It includes a compressor, hoses and piping, valves, tanks and other parts ... "Contaminant Elimination Procedure for Tractor, Trailer or Dolly Air Brake Systems," from the Technology and Mainten ...

Pneumatic air brake valves that have been submerged have likely ... Inspect the seven-pin electrical connector interface between the tractor and trailer. Inspect tractor and trailer glad hands ...

More than 15 trailer manufacturers have recalled nearly 40,000 trailers equipped with the Bendix SR-5 spring brake valve, which is sold outright and also included in Bendix antilock braking (ABS ...