Member, P500 Sport, MDM on (>800)
Join Date: Nov 2004
Location: San Francisco CA
Thanked 35 Times in 33 Posts
I know this thread is old but I am currently going through this same problem. I would like to offer my experience and see of there are any new discoveries.
It all started when we noticed a major p/s leak from that I though was the steering pressure line. It turns our the sls pressure line was leaking too/all along. So without researching the matter first, I block off the sls port right at the pump. Bad idea. The car didn't even make it off the lift before the pump sprung a major leak. I presume this is caused by increased pressure for that part of the pump. So my second option was an alternative pump. The only one available to me at the time was a ZF, dual vane pump without the sls port. The brackets turned out to work just fine, however I need a slightly bigger belt for me to test it and see if it works.
1993 M5 3.6 Lagoon Green - Daily Driver
1992 525i 5 speed - Sold
1991 M5 3.6 Alpine White - Sold
1990 325i/4 Schwartz - Sold
1990 325is Alpine White - RIP