insturment panel stopped working: Chinese Tractors -- Jinma Farmpro Agracat  -- Chinese Tractors Discussion Forum and Review insturment panel stopped working: Chinese Tractors -- Jinma Farmpro Agracat -- Chinese Tractors Discussion Forum

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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

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 05-28-2009, 12:09 Post: 163031
Buellm2



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Hi i have an Agracat, I believe it is a 2000 or 1999, one day the gauges just stopped working and all of the switches. I can still get it to turn over with the key and the ammeter still works, but nothing else. I have checked all of the fuses, is their a single power cord that runs all of the gauges that i need to look into. By the way I have no Manuals what so ever.
thanks in advance






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 05-28-2009, 12:10 Post: 163032
Buellm2



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Agracat 2920 -Y385 - 99/00
forgot that...






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 05-28-2009, 12:20 Post: 163033
kwschumm



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 insturment panel stopped working

I don't know that tractor but two things that are generally common to all gauges except the ammeter are voltage and ground.

Thinking out loud, and assuming negative ground system, use a meter to measure resistance from the - side of a gauge to ground. If it measures 0 ohms then voltage may not be getting to the gauges. If it measures infinite or very high resistance then there is probably a ground problem.






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 05-28-2009, 16:14 Post: 163034
greg_g



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Given your estimate of a 8-9 year old Jinma, is it safe to speculate that you have individual gauges - rather than the cluster panel? If yes, you might want to double check the fuses. Are yours the old wire-wrap fuses, or the disposible ATO type?

You might also want to see if your headlights work. The diagram I have shows the individual gauges are on the same circuits with the headlight switch.

//greg//






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 05-28-2009, 18:13 Post: 163035
Buellm2



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well i am going to be a little angry if thats the case, simply because when they stopped working i pulled them off. and if i remember correctly their was a bad fuse.
Yes i have the single gauges, not the complete panel.






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 05-28-2009, 19:52 Post: 163036
greg_g



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So which kind of fuses does it use? I ask, cuz the AgraCats I've seen used the old wire-wrap type. They can be tricky to re-wrap. But the ATO type are not without quirks either. Some may look good at casual glance, but will show bad when subjected to a continuity test

//greg//






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 05-28-2009, 21:36 Post: 163041
hardwood

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 insturment panel stopped working

KW is on the right track, grounding is usualy the culprit when a tractor gets about that age.






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 05-28-2009, 23:21 Post: 163042
greg_g



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Quote:
Originally Posted by kwschumm | view 163033
I don't know that tractor but two things that are generally common to all gauges except the ammeter are voltage and ground.Thinking out loud, and assuming negative ground system, use a meter to measure resistance from the - side of a gauge to ground. If it measures 0 ohms then voltage may not be getting to the gauges. If it measures infinite or very high resistance then there is probably a ground problem.

Not true - at least for this tractor. There are varistors (sending units) between the gauges and ground. The OPSU is a diaphram type, the coolant sensor is a thermister, the tach sender is a magnetic pickup. But now that I think on it, I guess you may be right in the case of the hour meter. Don't think the AgraCat is externally triggered.

This should also illustrate that none of these gauges share a common path to ground. So if all the gauges went out at the same time, the problem is on the + side. Hence my opening question about the fuse type.

//greg//






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Discussion Boards > Active Subjects > Messages as Posted > Chinese Tractors -- Jinma Farmpro Agracat Forum

Thread 163031 Filter by Poster:
Buellm2 3 | greg_g 3 | hardwood 1 | kwschumm 1 |




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