austinsmith4098 Posted May 23, 2019 Share Posted May 23, 2019 got a 2006 mack LE 613 and just replaced air dyer and compressor. if you start the truck up it wont build air. unless you floor it. but only the primary tank slowly stats to build, get to 30 psi and wont build anymore. im thinking governor. any ideas Quote Link to comment Share on other sites More sharing options...
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