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  1. #1
    New Member
    Join Date
    Dec 2012
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    6
    Location
    Cornwall, PE
    Tractor
    New Holland TZ25DA

    Default TZ25DA tach & hour meter stopped working...

    Fired up the boomer this morning and the tach and hour meter have stopped working.

    Checked the connections @ the alternator and they seem tight. No fuses blown - check the 3 std fuses anyway.

    Anything else to try before getting soaked @ the dealer?

    thx for any insight.

    Wendell

  2. #2
    New Member
    Join Date
    Dec 2012
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    6
    Location
    Cornwall, PE
    Tractor
    New Holland TZ25DA

    Default Re: TZ25DA tach & hour meter stopped working...

    I see that there is a cable that runs to the cluster/tach. SBA385350240 part #. If I dis-connect the cable from the tach and start the tractor, under normal working conditions, the end that connects to the tach SHOULD spin correct? Can someone confirm this before I purchase it as a first attempt at resolving this issue?

    thx.

  3. #3
    Gold Member pedalstomper78's Avatar
    Join Date
    Aug 2010
    Posts
    450
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: TZ25DA tach & hour meter stopped working...

    The cable should spin....correct. There's actually a few parts to that system.
    I would fire the tractor up and see if the cable spins. If it doesn't, I would pull the cable completely off. This way you can grab one end of the cable and spin it to see if the other end spins. The reason why I say this is looking at the parts diagram, there is a gear that runs off of the cam gear that runs your tachometer cable. That gear could have a problem also. You'll have to take the cable off anyways.....might as well check all options.

    If the cable does spin when you start the tractor us, there is an elbow on the back of your gauge cluster that could be having the issue. I would look at that as a suspect.
    Looks like Tractor Help has the parts a bit cheaper than anyone else I found.
    Replacement parts for the New Holland TZ25DA Tractor
    The forums are a great place to find information....but also a great place to find speculation. Only you can determine the real problems with your tractor. We're here to help you find the correct way to do it.

  4. #4
    New Member
    Join Date
    Dec 2012
    Posts
    6
    Location
    Cornwall, PE
    Tractor
    New Holland TZ25DA

    Default Re: TZ25DA tach & hour meter stopped working...

    Quote Originally Posted by pedalstomper78 View Post
    The cable should spin....correct. There's actually a few parts to that system.
    I would fire the tractor up and see if the cable spins. If it doesn't, I would pull the cable completely off. This way you can grab one end of the cable and spin it to see if the other end spins. The reason why I say this is looking at the parts diagram, there is a gear that runs off of the cam gear that runs your tachometer cable. That gear could have a problem also. You'll have to take the cable off anyways.....might as well check all options.

    If the cable does spin when you start the tractor us, there is an elbow on the back of your gauge cluster that could be having the issue. I would look at that as a suspect.
    Looks like Tractor Help has the parts a bit cheaper than anyone else I found.
    Replacement parts for the New Holland TZ25DA Tractor
    OK, sounds like a good plan. From your answer, you've done this before... Is there much tear down in removing the cable and gear from the cam gear? From the diagram, the tachometer end doesn't appear to be much trouble. Is this something a relative tractor newbie could attempt successfully?

    thx for your help.
    W. MacKenzie

  5. #5
    Gold Member pedalstomper78's Avatar
    Join Date
    Aug 2010
    Posts
    450
    Location
    Ohio
    Tractor
    Case/IH DX33

    Default Re: TZ25DA tach & hour meter stopped working...

    I haven't actually done the repair myself. I've diagnosed enough and seen enough on other tractors to have a decent idea of what's going on with it though.

    As for doing the cable, I wouldn't see too many issues for a newbie. We've all been there. It's all abotu taking about something that's just a little bit outside of your comfort zone. That's how you'll learn. Not too far out of the zone....just a little bit.

    On the gear, that's quite a bit more involved. Just depends on what you're comfortable with. Basic mechanical skills can get you there. Just need to be methodical in what you do.
    The forums are a great place to find information....but also a great place to find speculation. Only you can determine the real problems with your tractor. We're here to help you find the correct way to do it.

  6. #6
    Bronze Member mkow1969's Avatar
    Join Date
    Dec 2011
    Posts
    60
    Location
    Newfane, NY
    Tractor
    New Holland T1110

    Default Re: TZ25DA tach & hour meter stopped working...

    My T1010 did the same thinig yours did. I was cutting the grass and looked down and noticed the tach wasn't working and neither was the hour meter. I thought the worst.... checked fuses too. Turned out to be the tach cable. The rod inside the cable broke and I replaced it. I put an entry in this forum somewhere.

    I think it cost me 20 bucks from the dealer. Removed the 4 screws holding the console and was able to lift it up far enough to get my hands up under the dash to unscrew the cable. The connector at the engine end was tough to get at but with a flat screwdriver i could get it loose and spin it off. Wasn't bad.

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