roadusercharges Posted April 23, 2006 Share Posted April 23, 2006 , I took my superdog to the instrument repairers the other day to see if I could get a correction unit fitted as it has a Rockwell back end on air from a KW. The speedo drive from the transmission is a transducer as opposed to a cable, which meant we couldnt put in a step up unit, BUT we did find the speedo has a removeable plate on the back , that when you hook it up to the nerds machinery, displayed quite a few combinations of speed, by shifting the little switchs that are under the cover, bit like the combinations on a garage door opener. mine is now about 3-4 kmhs out , but much better then the 20ks it was before.nig Quote Link to comment https://www.bigmacktrucks.com/topic/1060-speedo-mods-for-superliner/ Share on other sites More sharing options...
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