Advancing Odometer -
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post #1 of 5 Old 07-19-2019, 08:23 AM Thread Starter
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Advancing Odometer

So, I bought a new Odometer for my Ď83 CJ7 and would like to advance the mileage to be true. I have searched online to no avail, does anyone know how I can add mileage to the new odometer?

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post #2 of 5 Old 07-19-2019, 08:45 AM
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Well, the way I have done it was with a rotary drill.

Using an old piece of speedometer cabling (about 8 - 10"), insert the drive end into the speedometer and the cut-off end into the drill chuck. Crank the drill up to a few hundred rpm and use the thumb lock to lock the speed. Go have lunch...

This takes a while, depending on the drill speed. I don't know how many rpms a speedo gear can tolerate, so there's probably a limit on how fast you can click off the mileage, but it works in both directions to add or remove. Don't know if there's a faster way.
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post #3 of 5 Old 07-19-2019, 08:45 AM
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They're made so you can't change the mileage on them without pretty much destroying them taking the case apart. Changing/tampering with mileage on odometers is technically against the law. What you're 'supposed' to do is contact your local DMV and they will usually note the odometer change on the title, or tag it as unknown mileage.
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post #4 of 5 Old 07-19-2019, 09:01 AM Thread Starter
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@Kruzan I get that which is actually one of the reasons I wanted to advance the new Odometer to the proper mileage.

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post #5 of 5 Old 07-28-2019, 08:30 PM
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Here are the instructions (pg 3) for advancing the speedometer. Sounds pretty in depth to remove the odometer from the cluster.
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