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Generator or Alternator?
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Ian Epperson
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PostPosted: Tue Nov 22, 2011 1:41 pm    Post subject: Reply with quote

Ooh, have to fix those images.

Ian Epperson wrote:
Generator:
Image may have been reduced in size. Click image to view fullscreen.


Alternator:
Image may have been reduced in size. Click image to view fullscreen.


Doug4823: Do you plan on replacing the battery at some point as well? If so, (and if you don't mind that it may strand you) why don't you just run it with a gen for now and see how it goes? If you do lots of short drives or stop-and-go, it probably wont work out for you, but if you do mostly long hauls, it should be fine. Note that VW dealers did install radios in many Things prior to first sale.
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Semper_Dad
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PostPosted: Tue Nov 22, 2011 2:57 pm    Post subject: Reply with quote

I'm still running a generator. Have a stereo with a 200W amp (and sub) along with some Hella 181 foglights. No problems as of yet. I rarely run the lights but I have pumped up the amp quite a few times. Still no problems.

I was planning to swap over to alternator when my genny crapped out 6 months ago but got a good deal on another gererator so that was delayed. I replaced the genny myself with engine still in car. If and when this one goes it will get another chance at an alternator.
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DougD
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PostPosted: Tue Nov 22, 2011 7:03 pm    Post subject: Reply with quote

Thanks guys! Mostly short trips but I'll see how it goes. It had a new battery so that's in my favor...
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Bohdan
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PostPosted: Wed Nov 23, 2011 5:59 am    Post subject: Reply with quote

I just put an entire new engine in my VW. I bought the Flame thrower spark plug wire set where you crinch on the connectors because you can cut the wires to your specified length. I had a couple of extra conntectors for the distributor cap and used them. Fit like a glove. I also used it for the oil sending unit.
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swhitcomb
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PostPosted: Thu Nov 24, 2011 1:04 pm    Post subject: Reply with quote

Ian Epperson wrote:
Ooh, have to fix those images.

Ian Epperson wrote:
Generator:
Image may have been reduced in size. Click image to view fullscreen.


Alternator:
Image may have been reduced in size. Click image to view fullscreen.


Doug4823: Do you plan on replacing the battery at some point as well? If so, (and if you don't mind that it may strand you) why don't you just run it with a gen for now and see how it goes? If you do lots of short drives or stop-and-go, it probably wont work out for you, but if you do mostly long hauls, it should be fine. Note that VW dealers did install radios in many Things prior to first sale.


Yes except both of those are cheap Chinese versions of the correct parts.
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DougD
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PostPosted: Thu Feb 23, 2012 10:37 am    Post subject: Reply with quote

Quick question: If Im looking at my generator from the back of the car what is the wire connected to the top of the generator, centered, in the middle towards the front of the generator(front being the front of the car)? Mine is currently disconnected...
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joescoolcustoms
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PostPosted: Thu Feb 23, 2012 10:41 am    Post subject: Reply with quote

Doug, in the picture just above, if you are reffering to the screw near the fan end, (front of car end), it is a ground. If the wire that is disconnected is brown and a small gauge, that is where it goes.

The two lugs on the pulley end go to the battery and voltage regulator.
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DougD
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PostPosted: Thu Feb 23, 2012 11:23 am    Post subject: Reply with quote

Thats the one. What does it ground? Is it important?
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joescoolcustoms
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PostPosted: Thu Feb 23, 2012 11:27 am    Post subject: Reply with quote

DougD wrote:
Thats the one. What does it ground? Is it important?


It grounds both the generator and the voltage regulator.

VW must have thought it was important, they had it on there for many years.
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DougD
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PostPosted: Thu Feb 23, 2012 11:31 am    Post subject: Reply with quote

Interesting... I'll plug it in. Maybe the car will go faster Laughing
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PostPosted: Thu Feb 23, 2012 5:18 pm    Post subject: gen r&r Reply with quote

been doing it that way a very long time!!! good tip uber!
uberautowerks wrote:
Let me give you all a tip that makes getting a generator or alternator out of our VW's, Things and beetles, heck even busses.

Use a 36mm socket and a longish breaker bar to remove the nut holding the fan to the generator. You know the one around the back? Leave the pulley on use a screwdriver to hold the pulley(as you would while changing the belt).
Once the nut is off, and it's washer, you'll have a lot easier time removing the generator and backing plate. Leave the fan in the shroud then reattatch when reinstalling the generator.
With this tip you don't need to remove or move the intake nor do you have to remove the shroud. You may still need to lift the shroud up a bit to get to the bottom two backing plate bolts, but you only need to lift it an inch or so.

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PostPosted: Fri Feb 24, 2012 12:44 pm    Post subject: Reply with quote

Also, since a dead thread has been revived, I will just mention that changing out the fuel pump is not absolutely necessary to do the generator/alternator swap. The pump will still clear, its just a real PITA trying to remove a generator pump with an alternator in the way sometimes Laughing
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PostPosted: Fri Oct 12, 2012 5:46 am    Post subject: Reply with quote

reviving this old thread again -

I was thinking about getting the hand crank for my Thing. Will it work with both, an alternator and a generator - or only with a generator?
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GI Joe
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PostPosted: Fri Oct 12, 2012 6:35 am    Post subject: Reply with quote

thatthing wrote:
reviving this old thread again -

I was thinking about getting the hand crank for my Thing. Will it work with both, an alternator and a generator - or only with a generator?


Don't see why it would matter. Alt/Gen are up out of the way enough to not interfere with crank pulley, and you use the same crank pulley for either application.
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PostPosted: Fri Oct 12, 2012 8:57 am    Post subject: Reply with quote

Gi Joe - agree I could get it installed either way, but a comment was made earlier in the thread that you cannot push start with an alternator. So does this mean you can't hand crank an engine with a dead battery if it has an alternator?
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citroen
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PostPosted: Fri Oct 12, 2012 10:25 am    Post subject: Reply with quote

a 21 mm wrench is made to fit the pulley, and this is a factory boot.

Image may have been reduced in size. Click image to view fullscreen.
factory boot on a alt this is a external reg alt 4 terminals

Image may have been reduced in size. Click image to view fullscreen.
21 mm wrench on the alt pulley
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GI Joe
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PostPosted: Fri Oct 12, 2012 8:17 pm    Post subject: Reply with quote

thatthing wrote:
...but a comment was made earlier in the thread that you cannot push start with an alternator.



??? that's a new one to me... Our Jeep has an alternator and I bump start it periodically just for grins... Do the same with Our Thing and never had an issue... Sounds like a second hand comment made without verification...

No reason an Alt vs. Gen would matter for starting.... Just silly!
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PostPosted: Fri Oct 12, 2012 10:13 pm    Post subject: Reply with quote

IIRC, the way it goes is this: to push start or hand crank you can have either a generator or an alternator, but in the case of the alternator the battery has to have at least a little juice in it. If the battery is totally disconnected or missing, you can push start or hand crank with a generator but not an alternator.
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GI Joe
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PostPosted: Sat Oct 13, 2012 6:29 am    Post subject: Reply with quote

Captain Spalding wrote:
IIRC, the way it goes is this: to push start or hand crank you can have either a generator or an alternator, but in the case of the alternator the battery has to have at least a little juice in it. If the battery is totally disconnected or missing, you can push start or hand crank with a generator but not an alternator.


Ahh.... must be able to flash the field in the Alt.... OK, that makes sense now!
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joescoolcustoms
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PostPosted: Sat Oct 13, 2012 7:31 pm    Post subject: Reply with quote

A generator does not start charging until it hits a minimum RPM around 600 to 700 RPM.

Kinda hard to do hand cranking.
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