TZ25DA tach & hour meter stopped working...

[mackendw]

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

[mackendw]

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.

[pedalstomper78]

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

[mackendw]

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

[pedalstomper78]

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.

[mkow1969]

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.