If you search the internet for uaf 2115 you come up with the data sheet including pinouts for the speedometer and milage indicator. This is intended for art benstein and anyone else that is interested. I came upon your speedometer notes by accident. I am still trying to figure out why my odometer does not work, speedo works fine. Thought you might be interested.

REgarding inoperable odometers, I had 2 lately that refused to work despite new gears (the usual fix).

I ended up replacing the entire circuit board with the silver motor on it. At least one of the cars I worked on had the motor partly torn off the circuit board and just stuck back into place.

I did the repair this way to preserve the mileage indication for the cars- changing the speedo head complete would have been easier. Adjusting another cluster to your mileage is at the very least tedious. I don't have any easy way to set the counts to a different number- you're pretty much stuck with what's indicated. Even unscrewing the brass bushings for the upper gear shaft doesn't let you turn the speedo numbers - a good thing I guess.

Replacing the circuit board with another requires that you unsolder and re-solder the small blue and black wires to the board from the speedo needle. Not real hard to do but you have to be very careful of the speedo needle while you've got 10 different pieces hanging off the assembly.
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Rob Bareiss, New London CT ::: 87 244DL- 249K, B230F/M47, Turbo sways, Bilsteins, GT braces, Virgos, Turbo exhaust, Gislaveds for winter!

It is pitifully easy (from a potential rollback standpoint) to withdraw the gear shaft an feww mm, cant it up a bit and freewheel the gears to any value. The trick is coordinating the gears long enough to lower the shaft and re-insert it without inadvertantly spinning things. The old speedos crimped the end of the shaft so it took some effort to free it with needle nose pliers, but the electronic speedos are no problem, with an uncrimped shaft. But who on BB would want fewer miles on our 240s?

I was actually trying to ADD miles, because my lazy (well, busy really) butt didn't fix one for, I dunno, 4 months or something, so it was about 4000 miles behind by my estimate.

I was going to catch it up with reality but I can't figure out how to free the top shaft with the little interlocking gears on it.

I could see how to remove the brass threaded bushings at each end, and actually got one out but still not enough movement (maybe 1/16"?) with those out. Decided not to break any (more) things so I stuck it back together reading 245K instead of 249K and went on my merry way.

More info appreciated.
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Rob Bareiss, New London CT ::: 87 244DL- 249K, B230F/M47, Turbo sways, Bilsteins, GT braces, Virgos, Turbo exhaust, Gislaveds for winter!

Did I make it clear I am working only with the number wheels in this operation?

ROB-
If this is the way you plan to upstage Irv, it won't work! Actually, I just grab the gear shaft with needle nose and yank it out of the inner race, tilt it up and adjust very carefully. It is maddening to st the gears right and re-fix the shaft, takes practice. The fun really begins if you drop the mess of colored gears, careful.