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 ...

Air brakes have a long history of reliable performance in the medium- and heavy-duty truck markets, yet these systems cannot be ignored without costly consequences. A good inspection process and ...

When the brakes are applied, circuits send compressed air from the storage tanks to front and rear service chambers that push the brake shoes into the brake drums, thus slowing down the vehicle. Semis ...

Failing air chambers provide little warning of the trouble looming within. Their demise is usually sudden, accompanied by the agonizing sound of escaping air as the parts exhale for the last time.

Many of the larger vehicles on our roads have one intriguing thing in common: They can make sudden, loud, gas-escaping hissing noises. These noises, admittedly, have made this writer jump — on more ...