It’s impossible to fix something without understanding how it’s supposed to work. Brake system repair decisions can be difficult to make, and costly to execute, without a basic understanding of system ...

The electronically controlled braking system (EBS or ECBS), also called electro-pneumatic braking or brake-by-wire, has been waiting in the wings for several years. It’s still back there but, ...

Hydraulic-over-air relay valves are designed to convert hydraulic-modulated input pressure to a proportional output air pressure. The valves are suited for on and off-highway applications, including ...

Within the air brake systems of trucks and trailers, actuators play a vital, but largely unsung, role. Brake actuators are the devices that convert the compressed air force within a truck or trailer's ...

Descending a long downgrade can trigger a runaway even when your brake system is in good working order. Here’s why. The treadle valve, under the pedal, sends only a small air signal. It activates a ...

Most incidents involving total air-brake failures go unreported officially and simply become the stuff of legend. But a few too many of them have resulted in very public collisions. Until recently, ...