I spoke with a friend who is a trucker and used to be an instructor. He said weekly bleeding of the tanks is important even with a dryer. He said the bag bleed off is normal. The proper way to test the low air alarm is to chock the tires, turn the engine off and pump the brakes until the alarm sounds. It should go off at 60 psi. The gauge that shows applied pressure should never read over 25 psi or you have hot brakes. This is fun learning all this new stuff!!
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