Airline madness!!!!!!!!

[Chamberpains]

A couple airlines that are hard to check for air leaks are the signal lines from the air governor to the air dryer or the signal line from the primary tank to the air dryer. Start the truck up and JUST BEFORE the air governor kicks in @120-130 psi shut the truck off and listen for air leaks. Sometimes you have to have a second person under the truck ready to listen when you have the truck shut off or you have to shut the key off and quickly go underneath the truck to catch the leak before the line leaks out. You have to catch it before the dryer purges.