456GT: Window Adjustment | Page 2 | FerrariChat

456GT: Window Adjustment

Discussion in '456/550/575' started by 360modena2003, Jan 28, 2016.

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  1. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    the upper limit is set by an adjustable stop on the toothed mechanism (driven by the motor), the computer senses the motor current and stops it, also when driving over a certain speed the motor blips the window up to ensure a seal.
    You will need to take the door cover off to access it. There is a procedure using the key in the door to allow the window computer to learn the limits. With the door closed use the key in the door - hold it towards the front and the window will open to the limit, and then hold to the rear and the window will close to its limit, you may be able to push the closing window so it is inside the door seal. it will stop the motor when it reaches the limit imposed by the window seal.
     
  2. cls

    cls Formula 3

    Jun 12, 2007
    1,663
    Los Angeles/Montreal
    Full Name:
    Chris
    I believe the upper limit is set by the ECU learning when the window reaches the seal. At least that's the way it worked for mine. I didn't see any upper stop, nor could I find a reference to it when I reset mine.
     
  3. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    34,979
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    Nope, Sully was correct.
     
  4. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
    Great, thank you very much. Will look for the stopper, do you know where exactly it is located?

    Sent from my HUAWEI P7-L10 using Tapatalk
     
  5. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
  6. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    Hello Hard to tell from the diagram, but it may be item 13. On my mechanism someone had welded some extra metal onto it to give additional adjustment,
    it may be that it is an overriding stop and the comment by Chris (post 22) is correct. Try the reset process 1st, and as it reaches the upper rubber seal push on the top of the window to ensure it goes into the seal and does not bypass it as per your photos.
     
  7. cls

    cls Formula 3

    Jun 12, 2007
    1,663
    Los Angeles/Montreal
    Full Name:
    Chris
    My window went too high when out of alignment, after adjustment I did exactly as you said (pushing glass on closing to improve the seal.) After letting it sit for a while (and let the new gasket form to the window) all was well. I didn't have an upper limit that I could see, and don't see it referenced in the Ferrari guide. If the ECU learns from a stop, why have an upper stop? Shouldn't the closing into the seal be enough / better / easier?
    I'd be happy to upload the Ferrari TSB for further clarification, but it's too large to attach.
     
  8. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,423
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    Chris- You can convert it to jpegs and post it that way. I have been doing that for years.
     
  9. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    Hello All, I checked a spare mechanism I have and there is a stop which is adjustable.

    It is a round 1 inch pressed washer sits on the inside side of the toothed lever. It is fixed by a nut and bolt in a slotted hole to adjust up and down. It may be purely used to be the lower limit - but as mine had be made more oval (with welding slag) than round it was both the lower and upper stop.

    So I am thinking it should only be the the lower stop and a over-riding upper stop if the window bypasses the door seal.
     
  10. cls

    cls Formula 3

    Jun 12, 2007
    1,663
    Los Angeles/Montreal
    Full Name:
    Chris
    #35 cls, Mar 1, 2016
    Last edited by a moderator: Sep 7, 2017
  11. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
    Great, thank you very much.

    Could you share a picture of the stop?


     
  12. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
    Correct - #13 is called "STOP BUFFER" - the question is weather it acts as the "upper" or "lower" limit.
     
  13. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    #38 sully456, Mar 2, 2016
    Last edited by a moderator: Sep 7, 2017
  14. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
  15. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
    Is this where the buffer fixed?/(where the blue lock nut can be seen)



    Sent from my HUAWEI P7-L10 using Tapatalk
     
  16. 360modena2003

    360modena2003 Formula 3

    Jul 11, 2009
    2,423
    Hello Sully, I've found the stopper, but it seems on mine the bolt goes through the "plate".

    Is your conical and then press fits into the plate/ring?

    Thanks

    Sent from my HUAWEI P7-L10 using Tapatalk
     
  17. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    Yes it is. Adjustable up and down to set the stop
     
  18. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    #43 sully456, Mar 7, 2016
    Last edited by a moderator: Sep 7, 2017
  19. Davidspop

    Davidspop Formula Junior

    Dec 23, 2019
    398
    Full Name:
    Lance Malcolm
    I know I am raising another thread from the dead....but do @sully456 diagrams follow the logic in the 456 window??
     
  20. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
    One of the problems is that the split arm, which is supposed to be straight, is bent because the hinge pin is not strong enough. A slight bent is enough for the window not to fit.

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  21. Davidspop

    Davidspop Formula Junior

    Dec 23, 2019
    398
    Full Name:
    Lance Malcolm
    @francschman good point and I have my regulator out now... and see some "flex" in that arm... any solution to strengthen it up?
     
  22. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,215
    Twin Cities
    Full Name:
    Tim Keseluk
    The pivot pin needs to be replaced with one made of steel, TIG welded in place. I've done a few. If done right, it's a permanent fix.
     
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  23. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
    I copied the original design but modified the split arm so that it can be rotated a bit, which in my case was sufficient to create a perfect fit for the window. Together with @Salami I considered making a series of these but decided against it, as I found the mechanisms needed too many additional components (balls for the ball joints, hinge pin, rivet, bronze bushing, thin brass washers) and fiddling with with to make them work perfectly. But anyone with access to a lathe and tig welder should be able to make their own. I can send the CAD files of the arms to anyone interested.

    [​IMG]

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  24. Davidspop

    Davidspop Formula Junior

    Dec 23, 2019
    398
    Full Name:
    Lance Malcolm
    I really like this! @franschman that is awesome work!
     
  25. Davidspop

    Davidspop Formula Junior

    Dec 23, 2019
    398
    Full Name:
    Lance Malcolm
    So I have replaced the center spline pivot with a steel one.... and now having a devil of a time adjusting the window. It still wants to rotate down in the front and up in the back causing the rear top of the glass to come "up and forward" creating a gap and wanting to damage the upper window seal.... it seems to also be pushing out at the top rear? What are all the adjustment points.....has anyone made all the adjustments. It seems to want to "slide down" on the front vertical slide?
     

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