01-26-2018, 10:50 AM | #1 |
Not Yet Wild
Join Date: Oct 2017
Posts: 7
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Over-charging Battery
1973 D model Harley golf cart- 2 stroke
Has anyone experienced this...... Checking voltage @ battery and accelerating, I am getting up to 18 volts! I changed voltage regulators (new), TWICE! (two new)- same problem. I have two starter generators and changed them out with no difference. I believe the regulator is wired correctly....... DF to DF, D+ & D- go to A1 & A2 on starter. The regulator states "do not ground DF". When everything is connected, I have continuity between DF and the frame (????). Its a short length wire and there is no chafing for a short in line (examined very close). Remember, I have tried both of my good starters, and two voltage regulators (new). Any help is greatly appreciated! |
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01-26-2018, 12:28 PM | #2 |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,950
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Re: Over-charging Battery
If you are using an OEM voltage regulator then you can adjust the output. Open the VR up and you'll see an adjustment screw inside. Counterclockwise will reduce the amount voltage coming out of that bugger.
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01-26-2018, 01:02 PM | #3 |
Not Yet Wild
Join Date: Oct 2017
Posts: 7
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Re: Over-charging Battery
I know "Hitachi" style regulators have adjustment, but mine are "Bosch" style. Do the Bosch style regulators have adjustment? I have looked but do not see any adjustment screw, maybe overlooking.......
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01-26-2018, 04:23 PM | #4 |
Gone Wild
Join Date: Aug 2016
Posts: 164
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Re: Over-charging Battery
Sounds like a grounded field eliminating the regulator and causing the generator to put out its maximum charge,
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01-26-2018, 06:19 PM | #5 |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,950
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Re: Over-charging Battery
You can put a hitachi on there if you want. VRs are pretty much interchangeable.
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04-22-2022, 11:04 PM | #6 |
Not Yet Wild
Join Date: Jun 2013
Posts: 6
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Re: Over-charging Battery
I think that the same thing is going on with my cart. How do I correct this? The wire on the DF terminsl of the starter also gets very hot until the voltage regulator fails. Can/should I run a wire directly from the DF terminal on the starter to the F terminal on the regulator?
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04-25-2022, 08:11 AM | #7 |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,950
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Re: Over-charging Battery
I think you want to test how much voltage you have going to back to your battery when your cart is revving up. Jack the back of your cart up, or remove the belt, and rev things up. Test voltage at your battery. You should be at 14v or so. A bit more is fine but not too much more. As the posts says, if you have an original style VR simply adjust it down by way of the adjustment screw. If that doesn't work then you probably have a bad VR.
If you think that there is something wrong with your generator then take it to an alternator shop. They will be able to test and fix it. |
04-25-2022, 11:01 AM | #8 |
Not Yet Wild
Join Date: Jun 2013
Posts: 6
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Re: Over-charging Battery
It is charging at 18V or more. The wire going from DF on the generator to ????? the voltage regulator got hot then burned off a wire inside of the original (Hitachi style regulator). I was thinking that maybe the green DF wire shorted to ground somewhere between the gen and the VR. I wanted to go directly from the gen to the VR thus bypassing the wire loom. Will this cause a problem?
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04-25-2022, 03:12 PM | #9 | |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,950
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Re: Over-charging Battery
Quote:
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04-25-2022, 05:06 PM | #10 |
Not Yet Wild
Join Date: Jun 2013
Posts: 6
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Re: Over-charging Battery
Thanks. I'll try that and hopefully be back in business.
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