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Generator or Alternator?
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kenj06
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PostPosted: Tue Oct 23, 2018 5:45 pm    Post subject: Re: Generator or Alternator? Reply with quote

From Page 1
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.


I changed out the generator without removing the fan shroud. I think you should be able to get to the gaskets under the stand.
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BJT
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PostPosted: Tue Oct 23, 2018 10:46 am    Post subject: Re: Generator or Alternator? Reply with quote

So My 74 Thing is relatively new to me, and Iím learning about VWs fast, put in new Thing correct front end and exhaust and other minor stuff so far...

Looks like Iíve got some oil leaking from under the generator stand, to replace those gaskets and deflector, I assume the generator will have to be removed, which from what Iím reading requires removing the engine or dropping it at least to get the shroud off. Has anyone found another way to change the gaskets and deflector without dropping the engine?
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joescoolcustoms
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PostPosted: Sun Oct 14, 2012 3:03 pm    Post subject: Reply with quote

A magneto is what is required to fire a engine without a battery. It has permanent magnets the will generate enough power to fire and ignition and bring a engine to life.

Just like your push hand crank start lawn mower. No battery, just a magneto.
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Semper_Dad
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PostPosted: Sat Oct 13, 2012 9:24 pm    Post subject: Reply with quote

MRJEL wrote:
Did the early Kubels (hand cranked) have magneto ignition?

Generator or alternator, you gotta have some sort of power to get things sparking.


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MRJEL
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PostPosted: Sat Oct 13, 2012 8:51 pm    Post subject: Reply with quote

Did the early Kubels (hand cranked) have magneto ignition?

Generator or alternator, you gotta have some sort of power to get things sparking.
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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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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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Captain Spalding
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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: 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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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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Zylinderkopf
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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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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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Zylinderkopf
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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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Bashr52
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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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mtwrench540
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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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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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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 11:23 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 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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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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