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Thread: Anyone know how to set Speedo to zero?

  1. #11
    Bigger Hammer
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    maybe someone pulled it apart and did not put it back together correctly.

    maybe lift the lever over so the stop is on the other side?
    Last edited by pav1; 02-13-2018 at 09:43 PM.

  2. #12
    Sharpest-Tool Dual48s's Avatar
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    Quote Originally Posted by pav1 View Post
    if the "stop" is connected to the face, then maybe someone pulled it apart and did not put it back together correctly.

    if not maybe pull the face and lift it over so the stop is on the other side?
    I just looked at one I have sitting here that I broke :-S and I think he is correct, I thing the stop has moved and your needle is on the wrong side of it...
    "A little character makes a lot of personality"

    Mechanic by trade, teacher by profession, parts salesman to keep the Willys moving...

  3. #13
    Bigger Hammer
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    Quote Originally Posted by Dual48s View Post
    I just looked at one I have sitting here that I broke :-S and I think he is correct, I thing the stop has moved and your needle is on the wrong side of it...
    I'm going down and grab it off the bench and check it out some more after supper. Post more later. matty49

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  4. #14
    Bigger Hammer
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    I looked at this Speedo til I went crosseyed. Finally I held the Speedo needle and turned the "wheel." The shaft turned enough for me to get the needle to zero but the spring carries it on around till it rests on WILLYS as in the pic. Still not right but a little closer. Did anyone else find anything? matty49

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  5. #15
    Bigger Hammer
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    I think you need to lift the thin piece of metal and move the wheel to the other side of the stop, then move the needle.

    This is the "stop" correct?

    speedo.jpg
    Last edited by pav1; 02-13-2018 at 09:47 PM.

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  7. #16
    Bigger Hammer
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    on the cj speedo you can see that the wheel stop is on the other side of the little bar.

    speedo2.jpg

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  9. #17
    Sharpest-Tool Tilatobawillys's Avatar
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    Quote Originally Posted by pav1 View Post
    I think you need to lift the thin piece of metal and move the wheel to the other side of the stop, then move the needle.

    This is the "stop" correct?

    speedo.jpg
    By God I think you're right. The only thing I could see also maybe as an issue is on the back of the "wheel" in the recessed area. There are what appears to be counter-weights (I think magnets though based on the action of the speedo) 180 degrees opposite of each other on the part that spins. If one is missing it might cause the needle to naturally go past the stop or not stay where it should with lack of input, hence the 45 reading.

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  11. #18
    Bigger Hammer
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    Quote Originally Posted by Tilatobawillys View Post
    By God I think you're right. The only thing I could see also maybe as an issue is on the back of the "wheel" in the recessed area. There are what appears to be counter-weights (I think magnets though based on the action of the speedo) 180 degrees opposite of each other on the part that spins. If one is missing it might cause the needle to naturally go past the stop or not stay where it should with lack of input, hence the 45 reading.
    "MATTY49: I saw no evidence of magnets, but mine has a very fine "watch spring" just on the backside of the Speedo face. I did move the stop to the back side of the arm but it only changed things by a fraction. Since it is under spring tension my theory of the Speedo cable moves the needle right and the spring brings it back to zero is out the window cause the spring also moves the needle right. Surely someone out there in Willys land knows how this thing works. matty49

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  12. #19
    Bigger Hammer
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    You won't see the magnets, they're in the aluminum cups.


    If the spring moves the needle towards the right, you need to re-set the pretension on the spring by moving the needle one turn clockwise and when done, make sure you are on the correct side of the stop so that the spring will return the needle to the left.

    Then you need to lift off the needle and press it back on pointing to zero.
    Last edited by pav1; 02-15-2018 at 07:58 AM.

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  14. #20
    Bigger Hammer
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