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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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1850 D will not charge

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alberta dave

07-25-2003 18:26:00




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I have changed both my alternator and regulator in the hopes of improving on the previous voltage output of 11.9V but there is no change. The auto electric store has checked out both pieces and they work fine. I can not think of anything else to change, check or replace. Will a bad battery cause the voltage regulator to run low? The tractor has two 12V tractor batteries. I have always found that the output will be at least 13V even when the batteries are pooched. Any ideas why I can not get the girl charging correctly?

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alberta dave

07-29-2003 23:00:48




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 Re: 1850 D will not charge in reply to alberta dave, 07-25-2003 18:26:00  
I have been so busy haying that I have not gotten back to check on your suggestions until this evening. So far I am up to 200 acres cut and baled. I was starting to suspect that I moght have a bad ground so I will be changing wires and checking those batteries. I will also double check I have the right voltage regulator. Thanks for the tips.



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klf

07-28-2003 19:18:52




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 Re: 1850 D will not charge in reply to alberta dave, 07-25-2003 18:26:00  
Dave, you also have to be carefull about where you the parts from too. The solid state voltage regulators will not work. You need the mechanical one with the points. The NAPA part number is VR140. I ran into this problem with my 1850. I couldn't get it to charge unless I hooked the "F" terminal right to the "BATT" terminal. When I used the VR140 regulator, it charged perfectly. I warn you, the mechanical one is at least twice as much as the solid state one.

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PD

07-27-2003 06:27:37




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 Re: 1850 D will not charge in reply to alberta dave, 07-25-2003 18:26:00  
I realize that this suggestion may sound off the wall, but I got bit by this recently. Make sure that the pulley and belt are correct. The one I ran into had an aftermarket unit on it and the pulley was off a car. Car engines run faster than tractor engines, and the alternator was not spinning fast enough to charge. Good luck.....P



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Nick

07-26-2003 03:58:21




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 Re: 1850 D will not charge in reply to alberta dave, 07-25-2003 18:26:00  
You need to take out both batteries, check the fluid level and bring them up to proper level. Charge each battery fully. Take off every connection and clean them. Don't forget the ground and the connection to starter. Also clean the connection to the alternator. Bad connections can give you an Excedrin headache.



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Myron KY

07-27-2003 18:55:48




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 Re: Re: 1850 D will not charge in reply to Nick, 07-26-2003 03:58:21  
If your still having problems after trying PD and Nick's suggestions, I suspect that one of your batteries has a bad or weak cell. 12 volt batteries have 6 cells at 2 volts per cell. 6 cells times 2 volts = 12 volts. When two 12 volt batteries are connected in parallel the weaker battery will discharge the stronger down to the weaker's voltage level. With good batteries you should read 12 volts across the battery terminals, with the key off. With good batteries and properly working charging system you should read about 13.6 to 14 volts across the terminals, with the engine running. For a quick test, I'd replace both batteries with one known good battery and see if the voltage doesn't return to normal.
Hope this helps.
Myron KY

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Ollie

07-28-2003 04:40:03




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 Re: Re: Re: 1850 D will not charge in reply to Myron KY, 07-27-2003 18:55:48  
Good point. The stronger battery always discharges into the weaker. If one has a dying cell, both batteries end up dead. The voltage test will tell you if the battery is fully charged but won't tell you if the battery will hold a charge. Old batteries will often sulfate across the bottom of the plates. They won't hold a charge but will test at 12v or so. A load test is required... any auto parts store can do it.

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