speedometer calibration

Discussion in 'Class A / Diesel Pushers' started by reatom, Jun 5, 2006.

  1. reatom

    reatom New Member

    Have a pusher, allison tranny and speedometer is WAY off based on gps and measured mileage comparison. Have heard calibration is needed but have no idea who/where to look. I live in Florida.
  2. josretired

    josretired New Member

  3. reatom

    reatom New Member

    speedometer calibration

    Thanks will give it a try.
  4. reatom

    reatom New Member

    speedometer calibration

    My speedometer/odometer has only one button..to reset trip miles..it is mechanical there. Ever heard of missing/defective magnets in wheel sensor?
  5. foutsdw

    foutsdw New Member

    RE: speedometer calibration


    My speedomter just went out.

    It's a 1988 Rockwood on a Spartan chassis with a Allison 4 speed.

    Spartan sent me Speedo Data Drive sheets (3). I don't yet know if it's mechanical or it sends a signal (rf)?? from tranny to speedomter.

    Anybody have a experiences with Speedo's going out?

    Oceanside, CA

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