Power steering pump interchangeability for Audi 5000/100/200

[Kneale Brownson]

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I've disassembled a couple of these pumps for resealing and replaced a
couple others on 5ktq, 200q20v and V8  cars.  There MAY be a different
pressure relief valve inside, but  Bentley calls for the same pressures for
all the different cars in testing pump output.  They all have the same
mounting holes despite significantly different brackets between the
5k,  200 and V8 applications.  You can get a reseal kit for your pump for
~$25.  Where is yours leaking?

At 02:55 PM 11/17/2001 -0500, RJA wrote:

>Does anyone know what the difference is between the hydraulic (power
>steering) pumps for the '89-91 200's (034 145 155C) and the ones for the
>earlier 5000's (134 145 155D)?  I've been told that the only difference is
>the pressure relief valve inside, but that they can be used interchangeably.
>Can anyone verify that?  I'm looking for a rebuilt pump for my '90 200 and
>have found a good source for a rebuilt ZF pump (034 145 155D) but want to
>make sure it will work.  Did the '90 200's use Pentosin CHF 7.1 or CHF 11?
>
>-- Rich
>    '90 200q
>    '83 Coupe GT
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