I really should work on something like the Farmall C that needs a lot more help than this truck does. I actually did move the Farmall off the lawn and into the garage today though (I'm sure to the delight of my wife), so it will be easier to work on it. I got a couple large bearings for the front pedestal so I might have enough parts to get the front wheel assembly put together and mounted on the tractor. That will make it so much easier to move it around in the shop. But enough of that, back to the truck.
The speedometer cable had been disconnected from the speedometer when I got this truck. I took a look at the end of the cable and the square drive piece was missing, like it had been twisted off. I felt up behind the dash and found the stub still in the speedometer. I tried to turn the spinny part of the speedometer (not sure what else to call it, the part that is driven by the cable) but it wouldn't budge, which is precisely why the square drive had been twisted off. I pulled the speedometer out of the dash and decided to delve into it. Without too much difficulty, I got the spinny part of the speedometer to turn so I chucked up the stub of square shaft from the cable into a drill motor and started things spinning. The speedometer worked but the odometer and trip meter did not.