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.

The Bendix trailer product business recently announced an agreement with Vanguard National Trailer Corp. that adds the Bendix SB-4 combination spring brake as standard equipment on all new Vanguard ...