There is a plastic gear in the Syncro front diff for driving the speedo
cable. They can strip out and then no speedo. Thoroughly clean the area
where the cable screws onto the diff. There is a roll pin that holds the
gear assembly in place. Drive that pin out and the plastic gear can be
pulled out of the diff case. Different gears were used for different
applications but I think that all the North American ones are the same.
Where are you?

Mark

ian Butler wrote:
>
> The speedometer in my '87 Syncro has never worked.  Since I am starting a
> spring restoration project, one of the things I'd like to do is get it going
> again.  Trouble is, the cables and speedometer are OK; the output on the
> differential itself isn't turning.  Is there any way, such as there is in
> regular transaxles, to repair it without removing the diff and/or taking it
> to a legitimate repair shop?
>
> Any advice would be most appreciated!
>
> ian Butler / ian@bluemoon.hplx.net
> '88 Scirocco 16v, '87 Syncro GL