The iconic hiss of air brakes is more than just a sound—it’s a crucial feature that enables massive trucks to stop safely and ...

The following was published in CCJ's Air Brake Book ... via a dash-mounted pressure gauge. If pressure in the system falls below 60 psi, a switch in the system must come on and send an electronic ...

Unlike a gasoline motor, which controls the speed of the engine by regulating the intake mixture of fuel and air with a ... increasing the line pressure when the exhaust brake is activated.