Quote:
Originally Posted by Kurt in NJ
it's for truck -one vacuum diaphram, spring loaded return, most common on 42-47 big trucks--some had different ends or bushings in the end to adapt in later years, plus a little square drive connecter ----
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You are on the right path. I used 3 or 4 of these but it was 40 years ago.
I remember machining an adaptor and I think it was mounted backwards.
Can't remember any more. G.M.