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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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 Posted: Mon Mar 20, 2023 11:40 am Post subject: 12 volt generator Bosch |
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| Amazon sells Bosch 12v 0101302111 compatible? Generators. The armature on my old Bosch is toast — it’s arching. Would love to hear some opinions on the new Bosch 12v generators. |
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jinx758
Samba Member
Joined: October 04, 2014
Posts: 690
Location: Texas
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| Posted: Mon Mar 20, 2023 1:14 pm Post subject: Re: 12 volt generator Bosch |
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Howdy ...
"New" Bosch is probably Taiwan or China, heck Mercedes is Brazilian now.
Mite be worth it to have a local shop do a rewire/rebush/rebuild but week a specialist.
You could easily take brushes out to inspect them & the armature for scoring & excessive carbon build up.
Best luck ... jinx
_________________
" It's not valuable unless you learn something from an experience. " Henry Ford
It's not unlike the same difference
You can't push a rope
VALVES (cold)
POINTS
TIMING
CARB (fully warmed engine)
SCRAPE ALL GROUNDS
My Craigslist rescued 100 footer :
1971 Standard Bug
1776cc dual port
034 distributor
38mm EGAS Carburetor |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Mon Mar 20, 2023 2:37 pm Post subject: Re: 12 volt generator Bosch |
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A local shop inspected it today and said the armature is no good and is arching. So it’s either get a new generator, alternator, or armature for the old generator which I believe is Brazilian.
Amazon is pretty good at returns so I’m thinking of getting a “Bosch” thru them with a cheap protection plan. |
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jinx758
Samba Member
Joined: October 04, 2014
Posts: 690
Location: Texas
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| Posted: Mon Mar 20, 2023 5:19 pm Post subject: Re: 12 volt generator Bosch |
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Scam - a - zon ...
Fingers crossed !
Protection plan is a good idea, too.
Hope it lasts ... stay safe
jinx
_________________
" It's not valuable unless you learn something from an experience. " Henry Ford
It's not unlike the same difference
You can't push a rope
VALVES (cold)
POINTS
TIMING
CARB (fully warmed engine)
SCRAPE ALL GROUNDS
My Craigslist rescued 100 footer :
1971 Standard Bug
1776cc dual port
034 distributor
38mm EGAS Carburetor |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Mon Mar 20, 2023 7:53 pm Post subject: Re: 12 volt generator Bosch |
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| Thanks Jinx! |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Thu Mar 30, 2023 4:50 pm Post subject: Re: 12 volt generator Bosch |
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Update
I found a new/ rebuilt generator at NAPA — an exact replacement.
Installed it but the red light stayed on. Took the generator to a respected shop — his testing led him to say it should work. Reinstalled it but the red light is still as bright as ever.
I hooked a wire between the DF contact and the generator ground screw, started the car, then hooked my battery voltage tester leads to the D+ and the generator ground screw. The voltage needle didn’t budge. No voltage at all.
Kind of frustrating! |
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bnam
Samba Member
Joined: July 02, 2006
Posts: 2936
Location: El Dorado Hills CA/ Bangalore, India
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heimlich 
VWNOS.com
Joined: November 20, 2016
Posts: 6593
Location: Houston, Texas
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| Posted: Thu Mar 30, 2023 6:03 pm Post subject: Re: 12 volt generator Bosch |
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New Bosch generators are still made in Mexico along with the Alternators. The production has not moved to another country as of yet.
_________________
www.vwnos.com [email protected]
Classic Brands. Classic Quality.
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Restored Distributors Available (<--Click here) |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Fri Mar 31, 2023 7:54 am Post subject: Re: 12 volt generator Bosch |
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Thanks bnam.
Got generator to spin as described in your attachment and retested for output. It’s putting out some pretty good voltage and I’m convinced it’s working fine. Will go to next step and check regulator. Thanks! |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Fri Mar 31, 2023 4:37 pm Post subject: Re: 12 volt generator Bosch |
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Started the car today and the generator light went off briefly but came back on after just a few blocks. The brake light came on for no reason — the brakes are working fine.
Did some more testing later. Voltage across the battery was 12.3 before cranking. At idle it was 12.1. Never got over 12.2 when racing the engine. A post that I saw suggested testing for system voltage but did not tell how. Prior testing showed that the generator is capable of producing 35 volts plus (unregulated) so I think it’s working fine.
I would like to solve the problem myself without having to take the car to a shop. Thanks for the help you have given me on this. |
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goober
Samba Member
Joined: May 03, 2003
Posts: 1183
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| Posted: Fri Mar 31, 2023 10:55 pm Post subject: Re: 12 volt generator Bosch |
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| Check to make sure the brushes move freely in their holders. |
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heimlich
VWNOS.com
Joined: November 20, 2016
Posts: 6593
Location: Houston, Texas
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| Posted: Sat Apr 01, 2023 8:56 am Post subject: Re: 12 volt generator Bosch |
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You can also clean up the area where the brushes rub. Take some very find sandpaper to it.
_________________
www.vwnos.com [email protected]
Classic Brands. Classic Quality.
Not all parts are made the same. NOS OE/OEM parts made mainly in West Germany, Early Germany, and Early Brazil are where VW produced the best quality parts and best fitting products.
5% Off your order with coupon code: 5%OFF
Restored Distributors Available (<--Click here) |
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Sat Apr 01, 2023 11:31 am Post subject: Re: 12 volt generator Bosch |
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Per instructions below, I tested the “new” generator installed and it more than exceeded the 35 volt requirement when I raced the engine.
See photo of old voltage regulator. The information above suggests it’s probably no longer working. The red light continues. Thanks all.
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pernest
Samba Member
Joined: May 24, 2008
Posts: 270
Location: Jacksonville FL
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| Posted: Mon Apr 03, 2023 2:06 pm Post subject: Re: 12 volt generator Bosch |
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Happy ending (maybe). Hate just throwing parts at a problem and I noticed that my battery cables fit loosely over the posts but were not tight. I tightened them with the result that the red light went out and the battery is being charged when the car is running.
The old generator was arching but it appears the old regulator is working fine. Thanks for the info you provided — it helped a lot! |
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