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550 - Spinning Shock Actuator RESEARCH

Discussion in 'Technical Q&A' started by Doody, Jul 20, 2004.

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  1. Doody

    Doody F1 Veteran

    Nov 16, 2001
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    #26 Doody, Jul 21, 2004
    [lee] - yeah, just pull the lip and it pops right up no problemo.

    [bobafett] - my car snapped actual wires inside the cabling on the actuators - twice. one time the actuator got replaced wholesale. another time the mechanic was able to connect the broken wire back and tape it back up.

    doody.
     
  2. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    #27 bobafett, Jul 21, 2004
    Doody: Twice? Damn! Mine, when I first discovered it (and when I had forgotten about it too) seemed to be holding in place due to how tight the cable was pulled... of course I unspun in order to avoid any complications, but I'm surprised. My guess is for the first five years of its life, mine were spun up...

    --Dan
     
  3. thibaut

    thibaut Formula Junior

    Feb 28, 2004
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    Thibaut A.
    #28 thibaut, Jul 21, 2004
    I ve had thee problem over the weekend. suspension warning coming on... checked and passager side actuator was twisted. untangled the cable and immediately light was off.

    keeps on coming. funnily enough the part on driver side is different, looks llike upgraded. does not twist.

    car is 98 550. i do not have the part number but it has same white markings as per the pic. posted in thread. the other one (driver side - not twisting) does not have markings.
     
  4. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    #29 bobafett, Jul 21, 2004
    Thibaut: can you explain further? What do you mean looks different, and which white markings in which picture?

    Your suspension light is most likely directly related to the actuators, as you discovered.

    If I were you, undo both sides (even if not twisted - doesn't hurt to undo / recheck), and then put them back on. Orient them so that you'll know if it has rotated...

    --Dan
     
  5. thibaut

    thibaut Formula Junior

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    #30 thibaut, Jul 21, 2004
    well boba let me try to be more specific. the one on the passager side is red with text written in white on it. just the same as the pic posted in the thread.

    The other one looks different : the color is still red but not as shiny and there are no white text / markings. plus the wire seems to be different: the passager side has plastic wrapping whereas the other has something that looks like fabric type wrapping. plus the wire seem shorter.

    my guess is that the driver side may have upgraded at some point ? i need to take the care to the dealer in the next two weeks for a redkey issue and i will get them to fix the actuator on the passager side.

    sorry i should have takeen a picture. wont be able to do it for a while since i will be travelling in the next few days.

    does it help ?
     
  6. thibaut

    thibaut Formula Junior

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    #31 thibaut, Jul 21, 2004
    in the pic posted by doody at the beginging of the thread you see white text on the red actuator. well that what is missing to the seemingly updated part i have on the driver side

    will disscuss the matter with verdi. i am sure we will get to the bottom on this issue
     
  7. Doody

    Doody F1 Veteran

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    #32 Doody, Jul 21, 2004
    thibault - the actuators themselves haven't been changed. i imagine the part may have changed over the years that ferrari used it in a wide variety of cars (cf. redhead's post), but it's always been the same part #.

    you probably just have a different "batch" of actuator on each side, one of which doesn't have the text on it.

    what's changed is the "stuff" that the actuator connects into.

    fwiw,
    doody.
     
  8. redhead

    redhead F1 Rookie

    Dec 26, 2001
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    #33 redhead, Jul 21, 2004
    Correct........

    158732 has been the part number with no updates at all.
     
  9. speedball

    speedball Formula Junior

    Mar 29, 2004
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    Scot Anderson
    #34 speedball, Jul 21, 2004
    On my 2000, 550 w/11k, no spinning issues noted.

    Had the dealer run a service record .... no mention of any fixes or the part # 173900 fix.
     
  10. synchro

    synchro F1 Veteran

    Feb 14, 2005
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    #35 synchro, Jun 22, 2007
    Is it possible to get the photos re-posted?
     
  11. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,055
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    #36 f355spider, Jun 22, 2007
    Search under "355 actuators" as they are very similar; and there are threads with photos that are more recent. On the 355 there is no problem with them "spinning" just the plastic gear on top of the shock breaking. Hill Engineering now makes a machined steel replacement for that.

    Strange you would turn up a thread from over 3 years ago....shopping for something newer? Or just bored at work? ;)
     
  12. Harmonyautosport

    Harmonyautosport Formula Junior

    Apr 28, 2006
    683
    New York
    #37 Harmonyautosport, Jun 26, 2007
    We have a bunch of used actuators in stock if anyone is interested. $500/each vs $1000/each new.
     
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