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p horvath
Samba Member
Joined: December 29, 2003
Posts: 1225
Location: south carolina
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 Posted: Thu Jun 23, 2016 12:30 pm Post subject: Charging issues |
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| bone stock 62 beetle. still 6 volt. i replaced the aftermarket voltage regulator with an nos one. when i started the car the generator light came on and stayed on while the car was running.i switched back to the aftermarket regulator and now it too causes the light to come on. revving the car makes no difference. any suggestions? |
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34022
Location: Conejo Valley, CA
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| Posted: Thu Jun 23, 2016 1:11 pm Post subject: Re: charging issues |
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Maybe a wire is still disconnected?
Is the unit grounded through the mounting well? |
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Luft kühl
Samba Member
Joined: January 21, 2009
Posts: 1178
Location: Allentown, PA
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catahoula lou
Samba Member
Joined: August 30, 2008
Posts: 594
Location: south of Silver Springs, NV
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| Posted: Thu Jun 23, 2016 4:12 pm Post subject: Re: charging issues |
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Sometimes and coincidentally (this did happen to me a few months ago when I did some topside engine work), the generator brushes slowly get hung up in their holders and stop making sufficient contact to generate electricity.
I went through all the recommended and to-be-recommended solutions until I got curious and pushed the brushes onto the armature. Simple fix, just leave engine off while you do it...
Best,
Thom
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Thu Jun 23, 2016 11:19 pm Post subject: Re: charging issues |
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| How was the situation BEFORE you made your modification? I mean, before substitution was all OK and something could be up to your operations? |
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EverettB
Administrator
Joined: April 11, 2000
Posts: 69830
Location: Phoenix Metro
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| Posted: Fri Jun 24, 2016 8:01 am Post subject: Re: charging issues |
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| catahoula lou wrote: |
Sometimes and coincidentally (this did happen to me a few months ago when I did some topside engine work), the generator brushes slowly get hung up in their holders and stop making sufficient contact to generate electricity.
I went through all the recommended and to-be-recommended solutions until I got curious and pushed the brushes onto the armature. Simple fix, just leave engine off while you do it... |
If this happened, you usually need to remove the brushes and clean out their holders so that it doesn't happen again. Sometimes they get gummed up with brush or other dust.
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wcfvw69
Samba Purist
Joined: June 10, 2004
Posts: 13389
Location: Arizona
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| Posted: Fri Jun 24, 2016 10:31 am Post subject: Re: charging issues |
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| EverettB wrote: |
| catahoula lou wrote: |
Sometimes and coincidentally (this did happen to me a few months ago when I did some topside engine work), the generator brushes slowly get hung up in their holders and stop making sufficient contact to generate electricity.
I went through all the recommended and to-be-recommended solutions until I got curious and pushed the brushes onto the armature. Simple fix, just leave engine off while you do it... |
If this happened, you usually need to remove the brushes and clean out their holders so that it doesn't happen again. Sometimes they get gummed up with brush or other dust. |
Or.. if you installed new brushes, they are poor quality and don't slide well. I bought a brand new Genuine Bosch generator a few years ago. The darn light on the dash kept coming on. If I pushed on the brushes, the light would go out. I finally yanked the brand new generator out. The new brushes did not slide in the brush holders at all. The brush springs were really thin, cheap and non-effective in holding the brushes in place. I was pretty disappointed with how poorly and cheaply made this "new" generator was made. I had an old 70's Bosch generator w/a bad armature. I took the still good brushes out of it and it's brush springs and installed these used parts into the new generator. That fixed it. The brushes slid so much better and easier in the brush holders.
When I compared the new brush springs with the old, original ones, the quality was night and day better with the old one. Thicker metal and it was much tighter and stiffer than the new one.
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p horvath
Samba Member
Joined: December 29, 2003
Posts: 1225
Location: south carolina
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| Posted: Fri Jun 24, 2016 2:25 pm Post subject: Re: Charging issues |
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| I polarized the generator and it seemed to work. the light goes out after start up. |
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Tue Jun 28, 2016 12:02 am Post subject: Re: Charging issues |
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I suggest to read what happened. P horvath has ONLY substituted the regulator.
So my question (unanswered) is stil: which situation BEFORE installing the new regulator? |
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flyboy161
Samba Member
Joined: December 26, 2009
Posts: 2091
Location: Perry, GA
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p horvath
Samba Member
Joined: December 29, 2003
Posts: 1225
Location: south carolina
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| Posted: Wed Jun 29, 2016 8:26 pm Post subject: Re: Charging issues |
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the aftermarket volt regulator worked fine but was not correct for the car.
even though it was an American bosch v.reg it didn't look the part so
I went with the nos german bosch v.reg. this is a low mile all original car
so it needed correct parts. |
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Thu Jun 30, 2016 7:18 am Post subject: Re: Charging issues |
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Normally new generator regulator, especially the better Germany NOS regulator, when installed.... simply do not work!
The issue is: at start, DF should be shorted to ground, to initiate the voltage generation process.
But a NOS regulator has been sitting for 10 and over years with the field points in touch, and the contact is very erratic.
A NOS regulator has to be opened, also if it looks as new, contacts cleaned, and, while generator is running, moved with finger to have a good "wake up" of their conductance.
(the same when installing new distributor points) |
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