Air Brake REFRESHER and TEST procedures incl. Leak test

[Deb N Randy]

(10-15-2014 17:56)dentmac Wrote:  Safety FIRST.

-The low pressure warning alarm must come on above 55 psi (usually 60)
-----------------With the engine not running and the emerg on , fan the brake peddle until the light/alarm comes on. Must come on before the gauge reads 55 psi.

Note that the Spring/emerg brakes will automatically activate near or below 55 PSI

Always good to check brakes. But when checking the automatic spring brake do not have your emergency brakes on, as that is what you're testing. Chock the wheels if necessary.. Usual range is 20-40 psi.