The Stovebolt Site Forums The Shop Area General Truck Talk Speedometer in my 1952 3100 quit working

Hi All,
Once again I'm in need of advice. Last week on our annual color tour the speedometer in our '52 3100 with 235 and SM420 (4 speed) quit working. Going along fine when noticed erratic movement of speedometer needle followed by it dropping to zero and staying there. First suspected the cable, removed it and lubed it carefully. reattached it to speedometer and hand turned cable counter clockwise. Needle moved up to 20 to 30 mph with hand twisting the end of cable. Also removed speedometer gear from transmission to inspect. Teeth and movement seemed fine. Put a bright light toward threaded hole that speedometer gear came out of. From the limited view it appears the transmission speedometer gear looks good also. Reattached and drove. No movement of the speedometer needle. Will probably take speedometer out and have it rebuilt and purchase a new cable. Cable is about 20 years old. Also was wondering if I could lift rear wheels off the ground and turn them to see if speedometer gears were meshing and turning cable. The transmission was professionally rebuilt about 10 years ago and operates fine. As for many issues in the past any experiences and suggestions will be helpful and appreciated.
Dan (Chuck 52)