mackr1989 Posted March 12, 2018 Share Posted March 12, 2018 mack 18 speed in a 2000 rd with a 400 doesnt always fully engage when splitting between underdrive and direct. it will happen wether the transmission is in high or low range. when this occurs, it will seem to just neutralize and grind. what is going on? Quote Link to comment Share on other sites More sharing options...
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