512 TR control rod fixed by spring / ball? | FerrariChat
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512 TR control rod fixed by spring / ball?

Discussion in 'Boxers/TR/M' started by Ritter Rost, Jul 24, 2025 at 6:35 AM.

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  1. Ritter Rost

    Ritter Rost Rookie

    Aug 15, 2020
    39
    Germany, Bavaria, city of Passau
    Full Name:
    Stefan
    #1 Ritter Rost, Jul 24, 2025 at 6:35 AM
    I have removed the control rod 150881 from a 512 TR gearbox and wonder about these 2 holes. Is there any spring/ball fixation? I did not find any of these parts inside of my gearbox. And spare parts catalogue does not show them either.
    Are the holes just for the set up tool?

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    according to spare parts catalogue screw 22 does not hold any spring or ball.

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    the other 3 rods are hold in position by spring / ball.
     
  2. turbo-joe

    turbo-joe F1 Veteran

    Apr 6, 2008
    9,540
    southwest Germany, France ( Alsace ) and Thailand
    Full Name:
    romano schwabel
    #2 turbo-joe, Jul 24, 2025 at 8:30 AM
    that is it ;)
     
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  3. EDoug

    EDoug Formula Junior

    Apr 19, 2005
    269
    Southern Florida
    #3 EDoug, Jul 24, 2025 at 10:30 AM
    Stefan, although your 512TR shift shaft is slightly different from my 1986 Testarossa, below are a couple pics from my shift shaft seal replacement that show no detent associated with the shift shaft. My single hole on the shift shaft end accommodates the 6mm locating pin during reinstallation as detailed in the Testarossa WSM, whereas yours has two holes. Your reference to screw #22 might simply be an oil drain plug shown along with the other drain plugs. My stepped 8mm to 6mm set-up tool is shown, as well as my detent tool. EDoug


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  4. Ritter Rost

    Ritter Rost Rookie

    Aug 15, 2020
    39
    Germany, Bavaria, city of Passau
    Full Name:
    Stefan
    #4 Ritter Rost, Jul 24, 2025 at 12:38 PM
    Many thanks to both of you!
     
  5. Warlock

    Warlock Rookie

    Nov 24, 2013
    48
    Dallas, TX
    Full Name:
    Sunny
    #5 Warlock, Jul 24, 2025 at 12:42 PM
    Hey Doug, do you have a writeup for that? Not that I need to do this, I find it interesting :)
     
  6. EDoug

    EDoug Formula Junior

    Apr 19, 2005
    269
    Southern Florida
    #6 EDoug, Jul 24, 2025 at 1:11 PM
    Sunny, take a look at pages E33 to E35 of the Testarossa WSM to start with. EDoug
     
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