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.

Manually-operated trailer-supply valves

Some vehicles are equipped with a different type of cab-mounted trailer-supply valve, which must be operated manually by the driver. It has two positions: NORMAL and EMERGENCY. The important difference is that this trailer-supply valve must be shifted to the EMERGENCY position manually.

Charging the trailer system:

Place the trailer-supply valve in the NORMAL position and reservoir air will be directed to the tractor protection valve and supply-line glad hand.

Trailer breakaway:

Rapid loss of air pressure in the supply line will cause the trailer brakes to dynamite. “Dynamiting” is an emergency application of the trailer brakes.

Tractor protection valve
Figure 38. Tractor protection valve

Disclaimer

Rev: 2018