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AAz Clutched alternator
Posted: 24 Jan 2012, 13:11
by lhd
I was looking into adding a clutched pulley to my alternator, but by the time I buy the clutched pulle, and the tool to fit it, I may as well buy a recon alternator and go up a few amps.
Has anyone done this, or does anyone know the part number for a 120amp clutched pulley type to fit the AAZ?
cheer Rob.
Re: AAz Clutched alternator
Posted: 24 Jan 2012, 20:51
by kevtherev
What's the thinking behind the clutched Alt Rob?
Re: AAz Clutched alternator
Posted: 25 Jan 2012, 08:37
by bigherb
kevtherev wrote:What's the thinking behind the clutched Alt Rob?
It's to stop snatch in the belt drive which can lift the automatic tensioner allowing the belt to jump off, doesn't do the tensioner much good either.
Re: AAz Clutched alternator
Posted: 25 Jan 2012, 22:01
by lhd
Apparently it stops the Achilles heel of the Aaz engine, which is crank pulley failure.
Once VW realised there was a problem with this, they started fitting them to the last of the aaz's and continued this on with the tdi's.
I have already replaced the crank pulley and bolt as advised, but that's just extending the life and not fixing the cause of the problem in my eyes.
belts and braces really Kev.
Heres a link to show the difference, the too and throw on the belt is what causes the crank pulley to fail prematurely.
This was never a problem withe the old style aux/fan belt, but is with the newer type ribbed belts.
http://www.decouplerpulley.com/" onclick="window.open(this.href);return false;