185 starter/generator question

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Brianleibo
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185 starter/generator question

Postby Brianleibo » Mon Mar 13, 2017 4:50 pm

Does the starter/generator charge the battery all the time while the tractor is running or only periodically? Trying to see if I have a perfectly running setup or something wrong. I have brand new starter/generator and relay but when tractor is running according to the volt gauge and volt meter on battery the tractor at times runs at 12.4 volts but also seems to kick in at a certain point and run at 13.4 volts. Any input would be great. Brian :tractor:

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Re: 185 starter/generator question

Postby Gary Dotson » Tue Mar 14, 2017 7:26 am

Yes, it should charge constantly, as the voltage regulator strives to maintain voltage in the 13.8 - 14.2 range. You seem to have a malfunction.

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Re: 185 starter/generator question

Postby outdoors4evr » Tue Mar 14, 2017 7:39 am

I don't think they start charging until the engine gets up to a certain RPM. Once the engine exceeds that RPM, then it begins charging (and continues to charge) even at an idle. That way there is no engine load from the generator at startup. You should be able to see the voltage come up when it starts charging.
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Re: 185 starter/generator question

Postby Eugene » Tue Mar 14, 2017 7:50 am

My 154 shows a steady charge on the amp gauge when the engine is above 1/2 throttle. Below 1/2 throttle the amp gauge shows zero or about zero charge.

My Cub Cadets with starter/generator do the same thing.
I have an excuse. CRS.

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Re: 185 starter/generator question

Postby Larry B » Tue Mar 14, 2017 10:16 am

It is probably working ok. The cutout relay in the voltage regulator should cut in at around 750 engine rpm. At that point the voltage regulator relay should maintain a charge voltage around the 13.4 volts you get. If you back the rpm down low enough the generator voltage output is close to battery voltage the cutout relay will open and stop charging. If voltage at the battery drops to battery voltage while running above 1000 rpm you have a problem.

Brianleibo
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Re: 185 starter/generator question

Postby Brianleibo » Tue Mar 14, 2017 2:49 pm

Something's wrong with it I guess ran it today and it didn't charge at all what should I look at the wiring ? Faulty brand new voltage regulator or generator

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Re: 185 starter/generator question

Postby Jim Becker » Tue Mar 14, 2017 3:09 pm

Probably a bad connection, maybe a wire that was making needed contact part of the time but now has come completely loose. Make sure you have good grounds everywhere, particularly the regulator.

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Re: 185 starter/generator question

Postby Brianleibo » Thu Mar 16, 2017 8:06 pm

Ok I've checked it out a little more. Grounds seem ok wiring seems ok battery tests 12.72 before starting tests 12.42 running and 12.18 with lights on. I've ran the tractor at full throttle and tested voltage coming out of f terminal on generator and max I've seen is 6.5 volts if that says anything. Problem is I keep this tractor on a battery tender that keeps it at full charge and I still have a sneaking suspicion that this type of setup only starts charging when battery voltage drops below a certain voltage then kicks the relay in at battery terminal wire and that causes generator to start charging. I've also seen that you don't have to polorize a regulator just the generator. I've done the opposite. It says to polorize a generator ground Df and run jumper from battery + to the other terminal on generator with belt off. Which I have not done. My generator has an F terminal and an A terminal so if I tried polorizing would I ground F or A? Is it possible that these tractors have to run for awhile before they start charging regardless of the rpms.

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Re: 185 starter/generator question

Postby Gary Dotson » Fri Mar 17, 2017 7:25 am

The system should always maintain voltage above the battery static voltage level. Your system is not working properly.

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Re: 185 starter/generator question

Postby Larry B » Fri Mar 17, 2017 6:11 pm

You have a problem. The easiest test is to disconnect all wires from the S/G then take a pair of jumper cables and connect one of tne jumper cables to the positive of the battery and then touch the other end to the A terminal of the S/G for about 1 second to spin it up to speed and then immediately move the end of the jumper cable to the F terminal. When you touch the F terminal the S/G should decelerate RPM very quickly. If the S/G doesn't act like an electric brake is applied when you touch the F terminal something is wrong with the field winding or wiring in the S/G. If it passes the test something probably wrong with the regulator or wiring

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Re: 185 starter/generator question

Postby Larry B » Fri Mar 17, 2017 6:15 pm

Aslo forgot to say to take the belt off so no load on tne S/G when doing the test.

Brianleibo
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Re: 185 starter/generator question

Postby Brianleibo » Sat Mar 18, 2017 9:09 am

Well I'm putting the hood back on it. I read an delco remy article and it said don't bother taking any reading until the generator is warm and has ran fir at least 15 minutes and sure enough if the tractor runs long enough the generator starts charging my battery. Any thoughts. Now I do although think that vehicle generators start charging immediately after a certain rpm which I think people are getting confused with. Any thoughts? Brian :tractor:

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Re: 185 starter/generator question

Postby Jim Becker » Sat Mar 18, 2017 9:30 am

Running it for 15 minutes may change a voltage reading on the order of reading 13.28 rather than 13.42. It isn't going to change 12.4 into 13.4. If your system doesn't charge for 15 minutes, something is still wrong with it.

Brianleibo
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Re: 185 starter/generator question

Postby Brianleibo » Sat Mar 18, 2017 11:08 am

Jim I'm not sure what to say the battery tests full charge prior to start up 12.6+ when the tractor starts it comes down to 12.42 then after running for 15 minutes or so it seems to kit in and start charging 13 + . Now if this would tell anyone anything when you run the tractor with the regulator cover off the relay connected to g & f contact is closed before and after startup and the relay on the left connected to the battery lead is open before the tractor is started and stayed open for the 15 warmup the closed and tractor started to charge apparently. But also the delco remy article I read stressed that voltage reading at generator are useless prior to warmup. Could it be that a brand new regulator doesn't allow the relay to pull in as easy an older one with weaker spring causing unnecessary charging. Hmmmm

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Re: 185 starter/generator question

Postby BIGHOSS » Sat Mar 18, 2017 12:33 pm

If you have enough juice to start it cold and it charges 13+ volts after a little while, I would not worry about it. I ran my 3000 Ford for about two years with no charging until I finally solved the gen/reg problem. I had no issues during that time. Every now and then I would throw a charger on it to top off the battery. In my opinion, your condition will do no harm.
"Courage is being scared to death-but saddling up anyway".......John Wayne


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