Servotronic Steering Rack Service.

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  • Error404
    Super Moderator
    • Mar 2007
    • 19789
    • Country: United Kingdom

    #31
    did the cap with the hex on the end of your rack come off ok Stu?

    I had to destroy a rack casing to get the rack and pinion out when i was looking at the quick rack GB - was totally seized in there
    Panthero Coupé quattro 20vt
    Indigo ABY coupé
    Imola B6 S4 Avant

    Comment

    • 4WheelDrifter
      S2Forum Zealot
      • Oct 2004
      • 5773
      • Country: Devon

      #32
      I've not had a problem with an end cap yet. Luckily. Maybe they overdid the punch marks on yours.
      I secure the rack in a vice and get a scaffold tube on a breaker bar to undo the cap.
      SS

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      • Error404
        Super Moderator
        • Mar 2007
        • 19789
        • Country: United Kingdom

        #33
        surprised the cap took the force TBH, i destroyed mine with a ratchet - its only a 17mm hex key in the alloy cap IIRC
        Panthero Coupé quattro 20vt
        Indigo ABY coupé
        Imola B6 S4 Avant

        Comment

        • 4WheelDrifter
          S2Forum Zealot
          • Oct 2004
          • 5773
          • Country: Devon

          #34
          A ratchet? TBH that's probably where you went wrong. I wouldn't have considered doing that. It's better to use a big bar IME, smoothly applying the torque.
          SS

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          • Error404
            Super Moderator
            • Mar 2007
            • 19789
            • Country: United Kingdom

            #35
            I'll try that next time Stu, although I might have just been unlucky with the one i tried..... even after the cap head rounded out i still couldn't shift the cap with mucho heat and a massive pair of stilsons on the rim and a steel tube as an extension - I took the grinder to it in the end
            Panthero Coupé quattro 20vt
            Indigo ABY coupé
            Imola B6 S4 Avant

            Comment

            • 4WheelDrifter
              S2Forum Zealot
              • Oct 2004
              • 5773
              • Country: Devon

              #36
              The good old grinder method, that'll do it. :mischeif: It's sounds like it was a stubborn one. I've been lucky so far then.

              I remember dragging the workbench around with a pair of Stillsons attached to one of Bo's suspension struts. I thought the cap was really tight, until I got a scaffold tube on it. Then it came undone easy.
              SS

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              • mouse
                S2Forum Addict
                • Apr 2008
                • 374
                • Country: Australia

                #37
                Thought it would be worth adding this section from the workshop manual here - see pdf.

                I'm considering doing my rack myself too - but still trying to figure out what exactly is involved in removing and reinatalling the rack.

                (pdf is from here if any one is interested in more of them: http://pdftown.com/PDF-Audi-Avant-RS...op-Manual.html)
                Attached Files

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                • Error404
                  Super Moderator
                  • Mar 2007
                  • 19789
                  • Country: United Kingdom

                  #38
                  Worth a mention that AFAIK there has been some issues with a dodgy batch of seal kits that seem to leak, quite a few people have had problems with them after rebuilding.
                  Panthero Coupé quattro 20vt
                  Indigo ABY coupé
                  Imola B6 S4 Avant

                  Comment

                  • Nickel_5000tq
                    S2Forum Tinkerer
                    • Oct 2010
                    • 3
                    • Home: United States Current: Cambodia

                    #39
                    I was looking for those details last week and did not found until today , grrrrr. Finally I did mine last weekend.

                    Good write up.

                    I was not able to remove the seal under the C clip. Only the small blue one. Got the kit from Rennbay inc.

                    Comment

                    • mouse
                      S2Forum Addict
                      • Apr 2008
                      • 374
                      • Country: Australia

                      #40
                      Has anyone who's done this still have the fitting sleeves?

                      I got the seal kit direct from ZF but it does not come with the fitting sleeves. . . does anyone still have these and doesnt need them?

                      Comment

                      • AndyP
                        S2Forum Zealot
                        • Feb 2004
                        • 6049
                        • Country: England

                        #41
                        I think I still have them, PM me your details and I'll look tonight.
                        sigpic
                        1991 Audi S2 3B - 2.5 Stroker engine
                        1997 A6 2.5TDi quattro avant - C4
                        1976 RD250E / 350LC cafe racer

                        Comment

                        • Nickel_5000tq
                          S2Forum Tinkerer
                          • Oct 2010
                          • 3
                          • Home: United States Current: Cambodia

                          #42
                          Originally posted by mouse
                          I got the seal kit direct from ZF but it does not come with the fitting sleeves. . . does anyone still have these and doesnt need them?
                          Same question for me guys. I would like to change the end seal too ...


                          Where did you got your seal kit Mouse ? (link)

                          thanks.

                          Comment

                          • mouse
                            S2Forum Addict
                            • Apr 2008
                            • 374
                            • Country: Australia

                            #43
                            Originally posted by Nickel_5000tq

                            Where did you got your seal kit Mouse ? (link)

                            thanks.
                            I actually got it from a local transmission repair specialist who also rebuild steering racks - my mechanic would have sent the rack there if I was to get them to fix it. They had the kit in stock but otherwise they could have ordered it from ZF locally (http://www.zf.com.au/). but I couldn't have myself as ZF wouldn't sell direct to the public.

                            I also needed to give them the ZF part number of the rackrather than the Audi #. .. got it off someone here so hope its right..

                            Comment

                            • 4WheelDrifter
                              S2Forum Zealot
                              • Oct 2004
                              • 5773
                              • Country: Devon

                              #44
                              Originally posted by Error404
                              Worth a mention that AFAIK there has been some issues with a dodgy batch of seal kits that seem to leak, quite a few people have had problems with them after rebuilding.
                              That's a good point.

                              The last rack I did was an RS2 non-Servotronic rack, and the seal kit was on back order for a while. When it arrived some of the seal were slightly different to the ones I had done before, although the process was the same. But as a result the only rack that leaked after the rebuild.

                              Unfortunately I haven't refurb'd another steering rack since, or ordered any more seal kits. So I don't know if the problem is isolated to the non-Servotronic rack or if it's common to all of them.

                              I'll be interested in how others get on.
                              SS

                              Comment

                              • A80Avant
                                S2Forum Obsessed
                                • Sep 2005
                                • 10873
                                • Country: Greece

                                #45
                                yes i remember. that is my rack. I still have it in greece and in november ill be there. Not sure if you would like me to send it to you to have a look at it stu

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