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1987 Jcb 3cx 1400b black cab tacho/hours meter not working?

Discussion in 'Tractor/Loader/Backhoes' started by Richard Hudson, Sep 17, 2022.

  1. Richard Hudson

    Richard Hudson New Member

    Joined:
    Sep 17, 2022
    Messages:
    4
    Location:
    Canada
    Can any one help me get my hours meter working again, having read some posts I can see the w connector on the alternator needs checking, I seem to remember someone saying check some sort of worm drive or something, but I can't find the thread, help much appreciated.
     
  2. jimg984

    jimg984 Senior Member

    Joined:
    Dec 1, 2009
    Messages:
    606
    Location:
    ronda north carolina
    that year model probably a cable (worm) drive follow from hour meter to see where it connects if its inner cable, its can be fixed with a unversial cable from a auto supply
     
  3. Richard Hudson

    Richard Hudson New Member

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    Sep 17, 2022
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    Location:
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    Thanks, I'll have a look, any idea where/what it might connect to?
     
  4. jimg984

    jimg984 Senior Member

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    Location:
    ronda north carolina
    no, trace it out
     
  5. casey518

    casey518 Well-Known Member

    Joined:
    Apr 2, 2020
    Messages:
    105
    Location:
    adirondacks ny
    It's on the front of the motor. The tach drive on my machine was roached so I replaced it and just mounted an hr/tach meter in the engine bay
    Part numbers for the drive are 1446059M1, 1853144M1, 1853368M1, 2758346. Fits many machines.
     
  6. Richard Hudson

    Richard Hudson New Member

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    Amazing, thank you casey518
     
  7. GEOD998

    GEOD998 Active Member

    Joined:
    Aug 11, 2014
    Messages:
    43
    Location:
    SW Pa.
    Did you get the factory tach working also? That tach cable runs very close to the exhaust from the factory, and if it siezes, it will chowder the angle drive. Also if the drive you bought doest have a grease fitting you may want to fit one , or inject it with tach cable grease regularly because it gets no lube from the engine. I have purchased very nice replacement cables with the clip on the tach end from ontrackmachinery.com very resonably priced...esp compared to JCB. And Im pretty sure thats a NLA number from JCB iirc
     
  8. Richard Hudson

    Richard Hudson New Member

    Joined:
    Sep 17, 2022
    Messages:
    4
    Location:
    Canada
    That's great advice GEOD998, I've yet to get at it and have a look, knowing it's close to the exhaust gives me a good idea on the direction to look, in others groups people struggle with the same thing so I'll pass your advice on. Thank you.