Whenever you`re traveling down a grade | |
When air brake pressure is low | |
Whenever you`re away from the vehicle | |
Whenever you`re parked on a grade |
On the last air tank connected to the air compressor | |
On the air compressor | |
On every air tank connected to the air compressor | |
On the first air tank connected to the air compressor |
To keep your speed under control | |
It`s difficult to change gears while going downhill | |
To keep the brakes cool | |
The use of brakes is only a supplement to the braking effect of the engine |