See also our Speedometer/Odometer commentary.
Dave wrote -
The odometer in our '73 SB doesn't work, and apparently it hasn't for years. One of the first things we did to the car was to replace the speedo cable, and the speedometer works just fine. Replacing the speedo cable didn't have any effect on the odometer, however. Does this mean the entire instrument cluster must be replaced?
Someone responded -
Take the speedo out and remove the back screws. Take the innards out and you can see the gears that run the odometer. It could just be a loose screw the hold a bracket in place. If the gear is shot, find a donor speedo or replace the whole thing.
Someone responded -
No, you will not have to replace the entire instrument cluster, but you will have to completely disassemble the speedo head and glue the drive gear for the odo section back together. I did mine and have put 2500 miles on it since. I used super-glue. I also had to drill the gear a little larger in the middle since it appears they dry out and shrink, then they split and proceed to slide off the end of the shaft and then you have no more odometer.
Dave ultimately send his instrument cluster to Cape Coral Speedometer Repair in Ft. Myers, Florida, where the drive gear was replaced with a brass one and the instrument cluster was given a good overhaul. The man's name there is John; you can contact him at [email protected]. He does very good work.
Disclaimer stuff: Rob and Dave have prepared this information from their own experiences. We have not assumed any specialised mechanical knowledge, but we DO assume that anyone using this information has at least some basic mechanical ability.
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Last revised 6 May 2004.