air brake air supply 1990 wb40

[Leroy Eckert]

Yes, to release the parking brake, depress the brake treadle and push the release knob in. In doing so, the red and white needle will drop some with or without the engine running assuming there is air in the system.

Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA

gasparillaglass wrote:

hi all
can anyone tell me if you push in on the air brake parking release
dose your air meter drop some what steady when its not running???
is this normal??
I HAD WORK DONE ON HER
OIL PAN GASKET
CHANGED AND FOR SOME REASON NOW IT TAKES LONGER FOR THE
AIR BRAKES TO RELEASE THE SPRING BRAKES
STRANGE SO NOW IM TRYING TO FIGURE OUT IF I HAVE A LEAK IN IT

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