WTB: One-way clutch alternator pulley

[insdtanoodles]

I am looking for this pully to throw on my 90A alternator from a 96 jetta turbo diesel and I have had abosolutly no luck finding this anywhere, was even will to buy the whole alternator from a junk yard if the pulley was on it but couldnt find one. Anyone here know of a place they can be had or if you have any would you be willing to sell one? thanks.

[QuickTD]

Any altrom distributer (NAPA etc.) can get it. I would imagine frisco could get it as well. The part number is 028 903 119AA. Altrom lists it for $114.95CDN

[Otis2]

Does this pulley have the identical diameter of the original pulley on the AAZ alternator?

That is, if the W-signal tachometer is accurate right now, would it have to be re-calibrated after installing this new pulley?

[insdtanoodles]

Any altrom distributer (NAPA etc.) can get it. I would imagine frisco could get it as well. The part number is 028 903 119AA. Altrom lists it for $114.95CDN

oh thanks, altroms description for parts is bareable at best so I didnt want to order something to find out its wrong.

[wyldman]

I can get you the pulley through Altrom,and we can measure it to make sure it's the right one.

[QuickTD]

Does this pulley have the identical diameter of the original pulley on the AAZ alternator?

Yes it does, it's a plug and play swap. You will need to figure out some way to tighten the new pulley. I made my own spline wrench, perhaps wyldman has the proper tool?

[andy2]

One guy I know(not me) just uses an 8mm allen key,a rag and some big pliars to tighten them up he puts the pliars with rag on the inside ridge that way there is no chance of any pully damage where the belt runs,He's never had one come off yet and puts one on every IDI that he seen.It would probably actually tighten its self up after you start the engine anyhow :lol:

[wyldman]

The impact gun and a careful hand will get it on tight.The trick is to hold the socket,and just "burp" the gun,so it doesn't spin the alt shaft.

[QuickTD]

The impact gun works fine for tightening, the trouble is with the clutch pulley. It doesn't use a nut like the conventional pulley. The inner hub screws directly onto the alternator shaft. The inside of the hub has a fine spline on it that accepts some kind of special external spline socket, think torx only much finer. I made a special socket so that I could use the impact to install it. However, since the pulley cannot back drive and screw itself off, it's probably safe just to thread it on finger tight and let the diesel hammering take it from there.

[insdtanoodles]

Yeah thats what I did too. I was threading on the pulley and I got it tight and I went to put the nut on and oops there is no where to put it so I tried to get the damn thing off, no way it was comming off without that special spline tool. I am just going to hope that it gets tightened by the belt and it "cant" come loose because of the one was clutch. What a difference this pulley makes, no more hyperactive tensioner, no more rumbling and buzzing at idle, the car is actually quite, well quite for a diesel.

    I was wondering, now that I have mine installed when I start the car and let it idle the tach doesnt work and the oil pressure light come on, if I tap the gas pedal the tach works fine and the oil pressure light goes off, is that normal?

[wyldman]

Yes,it's normal,but not pulley related.It will do it with a normal pulley too.

If the idle is low,there won't be enough RPM output to engage the tach,which also triggers the oil pressure light.A quick blip of the throttle is all it takes.