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taylor0192

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VW Enthusiast
Registered: 11/17/07
Posts: 22
Reply with quote  #1 

I have a 1972 Super Beetle and I can NOT figure out how to get the old generator off to replace it with my new one. My VW Haynes manual book says to Detach the fan housing and lift it up high enough to remove the screws from the outter fan cover and then to lift the generator from the fan housing. Well I got the out fan cover off without lifting the fan housing but after realizing I had to detach the fan housing to get the generator out I so. The only problem is, is that I can not get it to lift high enough to even get the generator out. Any suggestions?


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1972 Volkswagen Super Beetle
fatalifeaten

VW Whiz Kid
Registered: 07/05/07
Posts: 448
Reply with quote  #2 
Check on each side of the fan housing (AKA fan shroud). There is one screw on each side that you can loosen and will allow you to raise the shroud up high enough to get the generator out. It should more or less slide backwards out of the housing and be able to lift right out.

Make sure you undo the strap that holds the generator to the generator stand too...


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Jerky_san

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Registered: 01/16/07
Posts: 186
Reply with quote  #3 

I know this isn't super pertaining to the question but MAKE SURE YOU POLARIZE YOUR GENERATOR!.. just thought I would throw that in there.. A long time ago we didn't do that.. it was bad news bears for us..

taylor0192

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Registered: 11/17/07
Posts: 22
Reply with quote  #4 

Polarize? I might feel stupid after you answer this but, what exactly does it mean to polarize?


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Jerky_san

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Registered: 01/16/07
Posts: 186
Reply with quote  #5 

Well short version is that it ensures when the generator makes current its it will "flow" in the correct way.. Long version is if I remember right you must take a wire from the battery to the positive side of the generator and touch it.. It will spark but when it starts to charge the + side will charge.. sometimes it can get reversed and the - side will actually become the + and thus your battery won't get charged.. Just read the manual though it will get into that conversation after everything else is done..

Jerky_san

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Registered: 01/16/07
Posts: 186
Reply with quote  #6 
http://web.utk.edu/~tprather/FoothillsTractorClub/TechTips/PolarizeGenerator.htmlhttp://www.vw-resource.com/alternator_generator.html#polar

some resources incase your manual doesn't cover it..
taylor0192

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Registered: 11/17/07
Posts: 22
Reply with quote  #7 
Alright so do I HAVE to polarize it than?
I finially got the generator out but not I am having trouble getting the 2nd half of the pulley off of it, it's as if it molded together

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1972 Volkswagen Super Beetle
68autobug

VW Guru
Registered: 02/20/04
Posts: 1,907
Reply with quote  #8 
the back half of the generator pulley
can be difficult to get off...
 
its attached to boss which fits onto the generator shaft..
there is a small woodruff key in a groove in the shaft and in the boss.
 
You may need a pulley to take it off...
actually I never took the back pulley off my generator when i replaced it with an alternator....
and its still sitting on the generator....
 
it may be easier to replace the pulley onto the generator...
old genuine VW pulleys are better than the new gold Brazillian/mexican ones...  which fall to pieces...
 
or you can upgrade to a good quality chromed pulley....
 
best of luck
 
Lee
 


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taylor0192

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Registered: 11/17/07
Posts: 22
Reply with quote  #9 
Thanks for all the help and advice everyone.
I got the generator in but then my coil went out later that night, strange if you ask me. I might have been just because the coil was old but I replaced it and it works fine now. Does anyone have an idea on how to tighten the belt on the pulley?

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fatalifeaten

VW Whiz Kid
Registered: 07/05/07
Posts: 448
Reply with quote  #10 
pulley shims. There should have been a stack of them on there when you removed the pulley and belt. You need "generally" 8. I've seen it done with as few as 4 and as many as 10.

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Karl53

VW Phenom
Registered: 03/29/07
Posts: 59
Reply with quote  #11 
you have to take out a couple of shims,  to tighten up the belt.

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NoH2O

VW Expert
Registered: 02/22/05
Posts: 565
Reply with quote  #12 
There should be several flat washers/spacers under the nut that tightens the front pulley half down or between the 2 pulley halves. I'm guessing maybe yours are missing as you would have had to have seen them when you took the old one apart. In order to tighten the belt you would remove enough spacers from between the pulleys to allow the pulley halves to come closer together. Or, if you were too tight, you would add spacers between the pulleys to widen the pulley halves and allow the belt to loosen.
I hope that makes some sense. It's easier to tell someone than to type it out. There should be a section somewhere here as well, describing the steps. Check the Tech Talk area, it probably has something in it for sure.

Steve

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YELLRHD

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Registered: 04/29/05
Posts: 236
Reply with quote  #13 
Don't forget you need all the shims

The ones not used between the pulley halves have to go under the cup and nut.

This will ensure your pulley is tightened properly



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taylor0192

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Registered: 11/17/07
Posts: 22
Reply with quote  #14 
New problem!!!
My coil went out again!
It wouldnt start so I replaced it and it worked. I drove it around for a bit, it died and I tried starting it and it wouldnt. My guess is that it is the coil again but what is causeing the coil to burn out or break!?!?
I'm hurting right now not having a car to drive so I need as much help as possible.

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1972 Volkswagen Super Beetle
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