The following is from Michael Salter of Precision Sports Car
The usual cause of failure of the speedo angle drive is breakage of the
short piece of speedo inner cable that inserts into the pinion in the
gearbox.
You can replace it, presuming that you have a piece of speedo cable with
a squared end on it.
To disassemble the box carefully drive the shaft which takes the section
of cable inward to pop off the welsh plug that holds it in.
Use a pin punch to drive the broken piece of cable out of the center of
the gear and install the new piece of cable.
Sometimes a little difficult to get the welsh plug back in but once it
is in position a couple of light taps on the center of it will usually
secure it in position.
If the piece of speedo cable that you are using to replace the original
is a little loose it can be soldered into position.
BTW the easiest way to cut speedo cable is with a grinding wheel.
Michael Salter
www.precisionsportscar.com
I have tried this and it works well.
Jim B.
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