CVSA's National Roadcheck June 5-7 may be focusing on hours of service, but you can bet that lots of trucks will be put out of service for brakes. To help you out, here’s a refresher course on ...

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.

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 ...