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Thread: Bought a series2... I think.

  1. #151
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    21,650
    It is possible that the extra load of the speedo is causing slippage. This could be because the square in the speedo is worn (possible), the square in the drive gear is worn 9possible, but unlikely), one or both ends of the inner cable are not properly squared (possible, but unlikely), the inner cable is too short (possible, perhaps likely) or the drive gear on the output shaft is slipping because the nut on the output shaft is loose (likely).

    Hope this helps.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  2. #152
    Join Date
    Aug 2013
    Location
    Rockhampton, QLD
    Posts
    328
    Quote Originally Posted by JDNSW View Post
    It is possible that the extra load of the speedo is causing slippage. This could be because the square in the speedo is worn (possible), the square in the drive gear is worn 9possible, but unlikely), one or both ends of the inner cable are not properly squared (possible, but unlikely), the inner cable is too short (possible, perhaps likely) or the drive gear on the output shaft is slipping because the nut on the output shaft is loose (likely).

    Hope this helps.
    I just changed the seal on the front output shaft yesterday and found the nut to be loose, so you may be onto something. Ill have to check the rear one this weekend.
    2003 D2a TD5 Auto
    1960 Series 2, work in progress

  3. #153
    Join Date
    Aug 2013
    Location
    Rockhampton, QLD
    Posts
    328
    Found the issue.
    Inside the speedo itself, the spring tension holding the plate/needle back onto zero was too much. This was probably from me fixing it up a bit earlier on. I held the needle on zero and moving the plate back and forth a few times to adjusted the spring tension while I drove up the driveway until 15mph on my phone matched the speedo. Far from being a proper calibration but still it shows it all works now.
    2003 D2a TD5 Auto
    1960 Series 2, work in progress

  4. #154
    Join Date
    Jan 1970
    Location
    Central West NSW
    Posts
    21,650
    If you spring down the stop, and allow the needle to swing back towards zero, there is a tiny dot on the face that shows the correct position for the needle. Spring the stop down again, and move the needle past it and allow the stop back up.

    John
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

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