Speedo Problems 67 C10 3 speed

[captainwillie]

OK, my barn-find 67 C10's speedometer isn't working. Cables fine, seems to be the driven gear isn't turning. Removed driven gear. Seemed ok, with some beveling onthe outside edge of the gear. Perhaps it wasn't seated far enough in to make good contact with the shaft's drive gear. Or maybe it was the wrong gear inserted by some past owner. Maybe there were ment to be spaces on it to make it extend more from the adapter. I don't know.

Found another speedo driven gear in the glove box, apparently a take off from some other relic. Looks the same, but in better shape, but is black instead of the nylon white color of the gear i removed. Tried installing it, if fit, but still didn't turn the cable.

Perhaps the driven gear on the shaft is worn, or perhaps i have the wrong adapter or gear(s). Can I just pull the tail shaft off to inspect the driven gear? Can I easily replace it, or am i going to need special tools?


Any speedo shops that have both the drive and driven gears specifically out there for this old girl?

Does anyone out there have a gear/adapter for the original 67 three on a tree behind a 250 six?


Is there really anyone out there at all?


Ha!