Have you ever tried to back up an 18-wheeler? It's no small feat, but once you understand how air brakes in semi trucks work, it all starts to make sense.

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 hardest part of disassembling the brakes is usually removing the drum. Some drums and most backing plates have inspection slots near the bottom (sometimes covered with a rubber plug or a steel ...