[s-cars] Viscous Fan Bearing Replacement

[Tom Green]

Here is a link to the Quattroworld.com FAQ listing on the UrS4/UrS6/S2/ 
RS2 forum.  It is accessed by opening the engine bay icon and clicking  
on the serpentine belt link.

http://forums.quattroworld.com/s4s6/msgs/33332.phtml

Notice that the ETKA illustration shows the viscous fan adapter is the  
same part for the entire list of UrS vehicles.  I don't see how it is  
possible to thread it on some vehicles one way and others reverse  
thread.  : )

I have 5 UrS6 viscous fans on my block that are all removed by turning  
the nut to the left.  The build dates run from 10/94 to 12/95.  I use  
the 32MM Audi special tools wrench with a 1/2" breaker bar fitted in  
the extension hole in the end.   I have the pin holder for the pulley,  
but I just whack the bar with a 2# hammer to impact it loose.  YMMV.   
If it is difficult, I suggest using both tools.  I would not recommend  
starting this job with some makeshift inadequate tools.

I have no personal experience with the UrS4 viscous fan removal.

I can not reconcile the conflicting information, some of which is from  
respected professionals.

Tom '95 S6
          '95.5 S6 avant
Knoxville, TN

On Thursday  January 17, 2013, at 03:04 AM, <racingiron at comcast.net>  
wrote:

> I've got a growl from the engine bay that's getting progressively  
> worse.  I've pinpointed the source as the viscous fan bearing.  I  
> was hoping to replace it tonight, and everything went fine until I  
> tried to get the clutch off.  I've got a 32mm bicycle headset wrench  
> and I made a pin wrench to secure the pulley.  I applied massive  
> force in both directions with no hint of movement, except from the  
> entire engine.  I destroyed my pin wrench, so I'll go rent a real  
> one from the FLAPS.  I'll probably also buy a longer 32mm fan wrench  
> to get more leverage.  The '93 popped right off with little drama.
>
> My question: What's the most likely thread direction on a '92?  My  
> '93 was normal righthand.  Bentley says flatly that they're lefthand  
> (obviously sometimes untrue).  I've seen reports of each in the  
> archives.  The pulley (and probably the flange it rides on) and the  
> clutch are slightly different between my '92 and '93, so I'm  
> wondering if I should expect reverse threads.  Any tips for breaking  
> a stubborn clutch free?
>
> Eric R.
> '86 urq
> '92 urS
> '93 urS