hotdogi Posted October 17, 2016 Share Posted October 17, 2016 Metroliner CSMR has small air loss at idle and dumps air ( I think from the rear brake circuit ) with just three applications of service brake. The treadle valve has already been replaced . No air leaks in the cab. Reading an earlier post about a Granite seemed similar and it was suggested he had a problem with a "combo valve" ?? Any comments / help appreciated. Quote Link to comment https://www.bigmacktrucks.com/topic/47288-mack-metro-liner-air-leak/ Share on other sites More sharing options...
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