Tach not working

   / Tach not working #1  

jsjsteven

Member
Joined
Apr 24, 2019
Messages
29
Tractor
5055e
I recently bought a 5055E 4wd. 2010 model with the old style gauges. Last time I got it out the tach didn't work. Figured it was a loose wire so I took it apart and tightened or felt of all the plugs and wires. Also checked the battery ground. Help please. What's wrong with my tractor.
 
   / Tach not working
  • Thread Starter
#2  
Re: Tech not working

One more thing that may be important... the temperature gauge has not worked 2 3 times. It would start working shortly into the time I was using the tractor. I'd say it has worked 90% of the 30ish hours I've put on the tractor. It has 1100 hours one it
 
   / Tach not working #3  
Re: Tech not working

Bad alternator?
 
   / Tach not working #4  
Re: Tech not working

Make sure to check grounds for gauges the temp and tach may well share a common ground that can effect both. If in doubt jumper a ground to tach and see if it works.
 
   / Tach not working #5  
Re: Tech not working

I have a 2009 5055E and my tach will show zero for some time after starting and eventually start working. I've not had a problem with the other gauges. I'll have to check my grounds to see if that fixes it.
 
   / Tach not working #6  
Re: Tech not working

Seeing your problems are all in the Dash area, I too would point to the grounding system.

Is the Dash a single unit or all individual gauges ?

IF, when you're looking for the ground, you find a lot of dirt, corrosion, and just plain bad connections, you might want to consider running new ground wiring. I know you are probably saying NO WAY, but in the long run do a GWRP, "ground wire replacement procedure" (LoL), you will reduce the number of electrical problem you could encounter in the future.

Since you have no info about where you live, or where the Tractor came from, you may, based on weather conditions, run into other electrical problems, so a little proactive electrical work MAY help in the long run, i.e. charging system grounding, and new grounds for the engine, the alternator, and the starter.

Then there is the sending units, are they in good condition, are they rusted, or maybe even have they been replaced and there is too much sealing paste. What condition is the wiring to the sending units ?

OK I'm done, I do things thinking ahead not just in the moment, so take my suggestions with a little more than a grain of salt !
 
   / Tach not working #7  
Re: Tech not working

I have a 2009 5055E and my tach will show zero for some time after starting and eventually start working. I've not had a problem with the other gauges. I'll have to check my grounds to see if that fixes it.

2008 JD 5303 does same thing. Run tractor for little and will all of the sudden start working. No other gauge issues.
 
   / Tach not working
  • Thread Starter
#8  
I ran a ground wire from the battery last night to what I think is the ground for the tach with no luck. I can't help but think it's something simple but I'm stumped. I'm not ruling out a grounding problem either.

20190531_185608[1].jpg20190531_185558[1].jpg
 
   / Tach not working #9  
Does it use the generator as signal source?
 

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