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Car Forum / Chevrolet / Chevrolet Corvette / December 2006

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How to get the alternator pulley nut off?

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Chuck Tribolet - 09 Dec 2006 00:57 GMT
'87 'vette. 28K miles and the alternator gremlin has gotten me.

What the trick to get the alternator pulley nut off?

I put a socket on the nut, and an allen wrench through the hole oin the socket in to the
hex hole in the end of the shaft.  Then grabbed the angled part part of the allen wrench
with a 15" crescent wrench, and put a big pipe wrench on the socket.  All that happened
was that the allen wrench acted as a torsion bar.

It sure looks like it is a normal (lefty loosey) thread.

Chuck Tribolet
Chuck Tribolet - 09 Dec 2006 04:28 GMT
Well, I had a beer, tried again, and it came right off.

> '87 'vette. 28K miles and the alternator gremlin has gotten me.
>
[quoted text clipped - 8 lines]
>
> Chuck Tribolet
rodent - 09 Dec 2006 09:16 GMT
Info for next time........rattlegun :)

cheers
Jim

> Well, I had a beer, tried again, and it came right off.
>
[quoted text clipped - 13 lines]
>>
>> Chuck Tribolet
Chuck Tribolet - 09 Dec 2006 14:06 GMT
You mean an impact wrench?  What keeps it from just spinning the whole inside
of the alternator?

If I had to do it over again, I'd leave the alternator on the car (just to have something to
hold it), and use a long 8mm Allen socket to hold the shaft, and the pipe wrench on
the socket for the nut.  Kinda chewed up the socket, but that's OK.

> Info for next time........rattlegun :)
>
> cheers
> Jim
rodent - 10 Dec 2006 06:19 GMT
Friction and the weight of the armature, I've done quite a few and spinning
has never been a problem :)

cheers
Jim

> You mean an impact wrench?  What keeps it from just spinning the whole
> inside
[quoted text clipped - 10 lines]
>> cheers
>> Jim
labtech1 - 09 Dec 2006 09:58 GMT
try using a 'belt' on the pully, under tension, to keep the pully from
moving while you try to loosen the nut,
'tap' the wrench with a hammer or mallet ( works sorta like an impact )  and
IF your lucky it should come
off

> '87 'vette. 28K miles and the alternator gremlin has gotten me.
>
[quoted text clipped - 8 lines]
>
> Chuck Tribolet
 
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