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 Post subject: fan belt
PostPosted: Thu Sep 17, 2015 7:01 pm 
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Joined: Tue Apr 14, 2015 10:16 pm
Posts: 38
Location: Kansas City mo.
The pully at the crank keeps loosen itself. Can I lock tight this item. Can I bend pully while continuing to become loose. How tight or loose should the belt be. Rule of thumb answers I guess. Thank you.


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 Post subject: Re: fan belt
PostPosted: Thu Sep 17, 2015 8:10 pm 
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Joined: Fri Dec 05, 2008 9:02 am
Posts: 771
Location: bardstown, ky.
Yes we lock tight with red locktight at the crank, I have taken several back off with no problems, as far as the belt my rule of thumb is if It squeals when you stomp it ,its a Lil loose, but don't go crazy on tightening it, you will flip belts off

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 Post subject: Re: fan belt
PostPosted: Thu Sep 17, 2015 8:12 pm 
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Joined: Fri Dec 05, 2008 9:02 am
Posts: 771
Location: bardstown, ky.
Make sure nothing is bent or your pulley key shaft is wore out also

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 Post subject: Re: fan belt
PostPosted: Fri Sep 18, 2015 10:58 am 
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Joined: Thu Sep 25, 2014 5:05 am
Posts: 163
Location: Pittsburgh,Pa.
92 foot pounds is probably the
recommended torque for the
big pulley. If the bolt still comes
loose, that is an indication of something
else out of spec.
1) The big pulley is a press fit so that
it does not pivot back and forth when
the engine accelerates and then
decelerates.
2) The woodruff key must also be a
good fit in both the crank and the pulley.
3) Only use a stock VW bolt since it has
a special shoulder that matches the
pulley bore. Check that fit before you
install the pulley!
4) Only use 1 washer at the big pulley
bolt and be sure that all of the mating
surfaces are smooth. The bolt hexes
should not have any burrs or raised
metal that can catch on the washer.
5) Before installing the pulley, run the
bolt 3/4s into the crank and check
for loose threads. If the bolt moves
sloppy, you need a new bolt or have
thread loss inside of the crankshaft.
6) When the pulley is fully seated, the
end of the crankshaft must be below
flush as per the original design.
7) Check that the fan and alternator
shaft spins freely before installing the
belt. Keep the battery fully charged
to reduce alternator inductive drag.


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 Post subject: Re: fan belt
PostPosted: Tue Sep 22, 2015 7:46 pm 
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Joined: Tue Apr 14, 2015 10:16 pm
Posts: 38
Location: Kansas City mo.
I still have wobble. I did all that stuff...changed woodryff key at alternater everything seems smooth and solid, untill i start motor. What do i do? I changed to brand new pulley. Still wobble. Worst case?


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 Post subject: Re: fan belt
PostPosted: Tue Sep 22, 2015 8:05 pm 
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Joined: Thu Sep 25, 2014 5:05 am
Posts: 163
Location: Pittsburgh,Pa.
Over the years i have seen this
happen. The big pulley can flex
and crack. No matter how many
times that you straighten it, it is
so weak that it just bends again.
Throw it away and get another one.
If the small pulley on the alternator
or generator is wobbly, then that
may have the same issue. Throw that
away and get another one.
Make sure that your top pulley is
lined up with the bottom pulley. A
new belt is also a good idea.
If you still have a wobble, post the
video on youtube and link it here.


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