[s-cars] Viscous Fan Bearing Replacement

[Wylie Bean]

Re:  the fan....i noticed that when i replaced my shattered (happened on  
entry to 14A @ VIR cutting the return line to the reservoir which in turn  
almost caused me to go off but that's an entirely different story) fan a  
year ago, and when i removed it from the clutch before the VIR event this  
Fall.  It was wobbly and i figured the good fan would probably just cause  
the clutch whole assembly to fail. I still haven't put it back on.

Wylie Bean
theringmeister at triad.rr.com
90 cq
91 90q20v
91 200q20v
92 urS4
08 Q7

-----Original message-----
From: racingiron at comcast.net
To: urdrquattro <urdrquattro at yahoo.com>, djdawson2 <djdawson2 at aol.com>
Cc: s-car-list <s-car-list at audifans.com>
Sent: Thu, Jan 17, 2013 14:17:12 EST
Subject: Re: [s-cars] Viscous Fan Bearing Replacement

> Yeah... and that fact confused me a bit from some of the 
> earlier comments.  AAN's only ran in one direction.  How 
> could it be possible that there were both right and left 
> threaded varieties?  Seems impossible.
> I've never seen anything but reverse thread.

If I'm not mistaken, the AAN rotates clockwise (when facing the crank from  
the front).  If that's the case, the fan, being driven by the back of the  
serpentine belt, rotates counterclockwise (again, as seen from the front of  
the car).  That means the action of the belt would tend to tighten a  
normally threaded clutch connection and loosen one that was reverse  
threaded.

My '93 part is definitely normal thread.  The slight differences I can see  
in the parts on my '92 made me wonder if it might be LH.  I tried both  
directions with quite a bit of force.  A bigger wrench (with a drive  
connection on the end, too) is on the way, so I'll either break it free or  
just plain break it.

As an aside, has anyone else noticed that the fan is not radially  
symmetrical?  What's up with that?

Eric R.
'86 urq
'92 urS
'93 urS
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