power steering pumps: A1 Cardone versus ZF

[Kneale Brownson]

Best writeup on pump disassembly I've read is in the '89-'91 Bentley.  
I've put some images starting at 
http://www.pbase.com/kneale_brownson/image/114727641.  Hit the "next" 
button four times for all of it.

I use an air impact with the drag link socket to pop off the mushroom 
caps rather than the "hammer" impact because I've found no way to hold 
the pump securely enough to "operate" the hand version.  I use a torque 
wrench to reinstall.

On 4/30/2011 9:29 PM, PeterBergin at aol.com wrote:
> Look in your Bentley, there are a bunch of round plugs that come our,
> underneath are O-ring seals and springs with valves.  It is really quite a
> simple procedure.  You need to buy a 1 inch drag link socket, round the  corners
> off with a grinder.  Use an impact driver (the kind you hammer on)  to
> loosen them.  My leaks were when the O-rings failed.  There may be  directions
> on SJM's site.  If your shaft seal is leaking, you will see  it.  If so be
> very careful removing the pulley mount.  It is easy to  break it if you use
> the wrong kind of puller.
>
> I would only use the 11S, however others have used brand X fluids with
> success.
> Good Luck,
>
>
> I presume you have a  91 200 20v.  That was the list your post  came on.
>
> Pete
> 91 Avant
> 02 S6 Avant
>
>
> In a message dated 4/30/2011 9:34:35 P.M. Central Daylight Time,
> a200q20v at gmail.com writes:
>
> What can  be leaking besides shaft seal? I don't understand your statement:
> "If the  pulley seal is not leaking, I would not mess
> with it." Please  explain.
>
> -----Original Message-----
> From: PeterBergin at aol.com
> To:  a200q20v at gmail.com; 200q20v at audifans.com; quattro at audifans.com
> Sent:  4/30/11 21:49
> Subject: Re: power steering pumps: A1 Cardone versus  ZF
>
> Why did you not rebuild the pump, kit cost less than $20 and takes  about
> an
> hour, piece of cake.  If the pulley seal is not leaking, I  would not mess
> with it.  Done mine twice in  239k,
>
> Pete
>
>
> In a message dated 4/30/2011 8:28:38 P.M. Central  Daylight Time,
> a200q20v at gmail.com writes:
>
> Several  years  ago I somehow got ZF rebuild pump for around $200
> (current price is   400+). Unfortunately it only appears to have lasted
> about 15 hours on  the  track, don't have exact records.
>
> Haven't had any leaks until  I started  occasional redline visits in
> preparation for a new season.  After a short  time hydraulic fluid
> started dripping from the  pump...
>
> I got the  cheapest pump I could get, A1 Carbone from Rock  Auto. So far
> found two big  problems.
>
> 1. Black paint is  everywhere, including hose connections and  all four
> threaded mounting  holes. Brake cleaner somewhat helped.
> 2. Pump  was primed by something  that resembles Dexron ATF and not the
> Pentosin CHF   11S.
>
> Pictures uploaded to my picasa   album.
> https://picasaweb.google.com/a200q20v/PowerSteeringPump
>
> Will   see how it works on the car   tomorrow.
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