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Deb N Randy · (This post was last modified: 10-16-2014 14:24 by Deb N Randy.)

I just took the Non CDL driving exam a couple of months ago and the test for the air brakes was to check for air leaks as you described. Then turn off the ignition, without the parking brake engaged (no chocking as we were level), pump the brakes and point at the air gauge when the low air warning came on (~60 psi). Then pump some more and point at the air gauge when the spring brake engaged (~30 psi). After that I turn back on the ignition and I had to point out I was aired up, supposed to be above 90 psi in 3 minutes.

Other than that they wanted me to go 3-5 MPH and hit the brake hard to make sure it had no sway, left or right. Then set the parking brake and put it in gear and make sure it didn't move.

/.Randy