Mitchell 1, a Snap-on company, has added color air brake diagrams to its June update of Tractor-Trailer.net, its comprehensive web-based truck repair manual system. The pneumatic diagrams will include ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When the brakes are applied, circuits send compressed air from the storage tanks to front and rear service chambers that push the ...

When the brake pedal is pressed, the exhaust passage will be closed and the air intake passage opens and compressed air goes back to the chamber. During the return stroke, the exhaust passage opens ...

The Mining Safety and Health Administration offers some pretty sobering statistics and investigations. Take one recent incident, for example. A 50-year-old haul truck operator was fatally injured ...