Air Brake Manual


This content makes me feel
Happy
Curious
Informed
Inspired
Unsure
Bored
Frustrated
Angry
Translate
Google Translate is a third-party tool, and is not owned or administered by SGI. SGI is not responsible for any errors or omissions as a result of the translation. In case of a difference in interpretation between the translated version and the laws and regulations governing Saskatchewan drivers and vehicles, the laws and regulations prevail.

Service-line rupture

If the service line is ruptured or disconnected, no action will take place until a brake application is made.

In Figure 46, the service line has ruptured and the driver has made a brake application with the foot valve.

Application air is directed to the control line through the tractor protection valve. Rupture of the service line will result in the escape of air pressure, if the brake application is held long enough to cause enough loss of pressure in the tractor system. This pressure drop causes the tractor protection system to close off, exhausting the supply line to the trailer. This will cause the trailer brakes to go into an emergency application.

Tractor and trailer with service-line rupture
Figure 46. Tractor and trailer with service-line rupture
Click for larger image.

Disclaimer

Rev: 2018