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360 hand brake piston

Discussion in 'Technical Q&A' started by tirekiller, May 25, 2016.

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  1. tirekiller

    tirekiller Rookie

    Mar 9, 2010
    14
    #1 tirekiller, May 25, 2016
    Putting new rotors and pads on my 360. It was simple enough until I needed to remount the handbrake caliper on the rears. Can anyone tell me how to get the thrust piston retracted back into the caliper so the handbrake pads are spaced enough to fit onto the new, now thicker, rotor? Since its mechanically driven I see an allen screw in the caliper (odd size, somewhere between 4mm and 4.5 mm) perpendicular to the bolt that attaches the actuating lever to the piston so I assume it has something to do with it, but didn't want to start randomly turning things. I have a Ferrari service manual, but have found nothing that addresses this particular issue.

    Thanks,

    Erik
     
  2. 24000rpm

    24000rpm F1 Rookie

    Aug 31, 2012
    4,653
    China and California
    #2 24000rpm, May 25, 2016
    if I understand it correctly
    there are 2 holes on the outside of the piston that you can use snap-ring plier to rotate the piston to move in and out



     
  3. cm2

    cm2 Formula 3

    Sep 26, 2012
    1,451
    SF Bay
    Full Name:
    Nathan
    #3 cm2, May 25, 2016
    Just by memory, but doesn't the piston have a twisting/screwing action to retract it? I think I used some angle pliers, but there are specific tools made for this...
     
  4. netman

    netman Formula 3

    Jun 17, 2008
    1,905
    OC SoCal
    #4 netman, May 25, 2016
    go to any auto parts store and purchase what is referred to as a brake ice cube. it is a aluminum block with different pin patterns on each side that connects to a ratchet and extension. you will turn the piston back in. dont turn it back in too far. just enough for the caliper with pads to be installed and the rotor to spin freely. you will use the handbrake to adjust the rest of the way.
     
  5. mello

    mello F1 Veteran
    Silver Subscribed

    Jul 12, 2013
    5,489
    CA Bay Area
    Full Name:
    Steve
    #5 mello, May 25, 2016
    ... I didn't have to remove the handbrake calipers when doing my brakes. I just remove the handbrake pads and slide the rotors off on an angle.
     
  6. Kevin Rev'n

    Kevin Rev'n Two Time F1 World Champ
    Owner Silver Subscribed

    Nov 29, 2009
    24,491
    Honolulu
    Full Name:
    Kevin
    #6 Kevin Rev'n, May 25, 2016
    I have not heard of this term before so I went to thegoogle and it's not there either. Anyone know the technical term for this tool?
     
  7. fastradio

    fastradio F1 Rookie
    BANNED Professional Ferrari Technician

    Apr 26, 2006
    3,664
    New England
    Full Name:
    David Feinberg
    #7 fastradio, May 25, 2016
  8. tirekiller

    tirekiller Rookie

    Mar 9, 2010
    14
    #8 tirekiller, May 25, 2016
    Yes, thanks all of you for your replies. I was able to use a pair of needle nose pliers to simply screw the piston back in to get the required clearance. It's embarrassing how simple it was to do.

    Thanks again for all your help.

    Cheers,

    Erik
     

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