Park Exhaust valve air leak

Dec 5, 2023 #1

Park valve exhaust on firewall leaks only when trailer brake knob is pulled ?

Daycabinit, Dec 5, 2023

#1

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Class A CDL Experience

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Dec 5, 2023 #2

If you then remove the emergency glad hand from the trailer is air coming out of the trailer glad hand?

BoxCarKidd, Dec 5, 2023

#2