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 ...

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 ...

S-cam drum brakes – the most common air foundation brakes on the road – are a familiar sight to every wheel-end technician in the North American trucking industry. As part of its Bendix Tech Tips ...

Step 6: Apply anti-seize compound to parts before reassembling them. Failing air chambers provide little warning of the trouble looming within. Their demise is usually sudden, accompanied by the ...