77rmack Posted May 17, 2010 Share Posted May 17, 2010 I've got a '77 R-600 that I bought not to long ago, that although it is retired I would like to have it play on a dump trailer once in a while. It does not have a power divider air valve in the cab, which leads me to believe it does not have a power divider, but a friend tells me that Macks did not need dividers, they are always locked in (???) Right or wrong? Quote Link to comment Share on other sites More sharing options...
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