2810HST - Tach stopped

[shvl73]

My '03 2810HST has only 355hours. Last week the tach was erratic and this week it has stopped working competely. All other gauges work. Any ideas on what to look for?

 

[bindian]

That is all the symtoms of a broken tach cable.
hugs, Brandi

 

[shvl73]

Now that you mention it, that makes sense. For some reason, I thought it was electrical, not mechanical. I was rushing to get things done and haven't had a chance to look at it. I'll check it out this weekend.
Thanks

 

[skipmarcy]

Now that you mention it, that makes sense. For some reason, I thought it was electrical, not mechanical. I was rushing to get things done and haven't had a chance to look at it. I'll check it out this weekend.
Thanks

Don't know about your model but my 4110 has an electrical tach, no cable. I could be mistaken but I think it reads off the altenator. My tach started acting-up 2 winters ago - doesn't work when cold, then slowly will start reading as it warms up several minutes. No problems in warmer weather (above 35 degrees or so) and seems to be accurate still.

 

[shvl73]

Well, that complicates things a little. Mine has just started doing it recently. How did you find which wire? It could just be a bad connection or loose.

 

[cwray57]

Interestingly enough the tach on my 3510 (2004 model) has begun acting up recently and current hours are about 360. Sometimes it doesn't move at all and sometimes it goes all the way around to the stop! Seems that tapping the dash panel or shutting down and restarting after it has warmed up and it usually begins to read correctly, alathough sometimes it just begins reading correctly with no intervention after a few minutes.

 

[shvl73]

I hope to take the dash out this weekend and see what lies beneath. I hope to find a loose wire.

 

[cwray57]

I hope to take the dash out this weekend and see what lies beneath. I hope to find a loose wire.

I would be interested to know of your findings. If time permits I may do a little exploratory surgery as well!

 

[shvl73]

I took it apart last night. There is alot of electronics in there. The tach is electrically driven. I didn't see any loose wires . Without much technical knowledge, I'm thinking it's going to be a dealer repair. Do any of the dealers here have any suggestions? Is the tach a separate item or will I need to get the whole dash cluster?

 

[shvl73]

Update: the tractor wouldn't start this afternoon. Battery was low. I charged it and started it up and checked the alternator, not charging. Well, where do I go from here? I'm guessing that I could check and see if it can be rebuilt. Has anyone done so?