Brake fluid change | FerrariChat

Brake fluid change

Discussion in '348/355' started by First Ferrari, Jan 31, 2009.

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  1. First Ferrari

    First Ferrari Formula Junior

    Jun 18, 2005
    523
    Mahtomedi,MN
    Full Name:
    Christopher Reeves
    Guys;

    If I vacuum out the old fluid from the master cylinder and perform a standard two person brake bleeding to replace as much as possiable of the old fluid do I need to bleed the clutch also? I know they share the same fluid but I have read so much on how tough the clutch bleeding can be and how air can be a bear to get out of the line as it has hills and valleys.

    If the clutch is not depressed while I perform the fluid change and brake bleed do I need to also bleed the clutch. I know I should bleed the clutch but I don't want some great amount of air sucked in as I bleed the brakes. I searched all the posts and very few say how easy it is to bleed the clutch.
     
  2. MaterMech

    MaterMech Formula Junior

    Feb 26, 2007
    476
    Los Gatos CA
    Full Name:
    Mark Johnson
    #2 MaterMech, Feb 1, 2009
    Last edited: Feb 1, 2009
    Yes clutch fluid should be freshened up. I'll always remember getting some nasty blackish crap from a 355 one time. A pressure bleeder works the best, such as an Ammoco (see link), but it can be done with the two man operation. The biggest impediment to the two man operation is that the hose from the fluid reservoir to the master cylinder goes up above the level of the feed on the reservoir and traps air. I just tucked the hose down during the operation and it worked but took a lot of pumping :)

    http://cgi.ebay.com/ebaymotors/Ammco-High-Pressure-ABS-Brake-Bleeder-7301-NEW_W0QQitemZ220353619488QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item220353619488&_trksid=p4506.c0.m245&_trkparms=72%3A543%7C65%3A12%7C39%3A1%7C240%3A1318
     
  3. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,232
    Mount Isa, Australia
    Full Name:
    Pap
    #3 PAP 348, Feb 1, 2009
    Last edited by a moderator: Sep 7, 2017
    I did the "two man" brake/clutch bleed Chris. Was VERY easy to bleed the clutch brother. :D:D

    Here are some pics. Have the key on, bleed the brakes starting from the wheel furthest from the master clyinder. :):)

    Then bleed the clutch. They share the same master clyinder so keep an eye on the fluid level. ;);)

    Here are some random pics. I flushed my old fluid out 6 months ago. It was the 1st time the fluid was flushed since the last major.........5 years ago. :D:D
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  4. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,255
    socal
    Bleed the clutch too. make sure to not allow sucking air in because the clutch inlet is about 1.5" below the cap on the reservoir. Also only open the clutch bleed 1/4 turn because it is so lame it sucks air too. Fill res to the top and bleed out about 4oz and by then you should see clean fluid. If not stop and refill and do it until clean. If you suck air then you got problems but they are easy to fix just post back here and we'll tell you how to fix it. No big deal.
     
  5. gidge348

    gidge348 Formula Junior

    Dec 12, 2008
    343
    Perth West Australia
    Full Name:
    Ian Wood
    Agree, if you change the fluid in the brakes it is a good idea to do the clutch as well, not a big deal.

    If you get an air lock in the clutch and it wont come back from bleeding the rear bleeder, try cracking the connector it the left rear wheel arch.

    This apears to be the highest part of the clutch system after the cylinder and seems to attract air.
     
  6. First Ferrari

    First Ferrari Formula Junior

    Jun 18, 2005
    523
    Mahtomedi,MN
    Full Name:
    Christopher Reeves
    Thanks for all the good info. I ordered a Motive power bleeder to get all that nasty fluid out. It should also help with the clutch which some think is very hard to bleed as anything more than 1/4 turn allows air back in.

    Pap that fluid looks like Coke apporiate that you used that bottle. I bet I can give you a run for the money. I have a sick feeling that mine is about the same. I will post pictures once I get the new bleeder.
     
  7. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,232
    Mount Isa, Australia
    Full Name:
    Pap
    Yeah mate, it was black and gunky! :D:D

    Looking forward to seeing pics Chris. :):)
     
  8. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

  9. First Ferrari

    First Ferrari Formula Junior

    Jun 18, 2005
    523
    Mahtomedi,MN
    Full Name:
    Christopher Reeves

    One is on the way.... Thanks guys for all your comments and help.
     
  10. FandLcars

    FandLcars F1 Rookie

    Aug 6, 2006
    3,057
    Tempe, Az
    Full Name:
    Rick Schumm
  11. hacker-pschorr

    hacker-pschorr Formula Junior

    Sep 27, 2006
    584
    Land of Lambeau
    #12 hacker-pschorr, Feb 2, 2009
    Last edited: Feb 2, 2009
    Side note(s) on the power bleeder
    • Test the seal between the bleeder cap and the fluid reservoir before filling up with fluid. Just attach and pump up, see if the pressure holds. I've talked to people who never fill their bleeder with fluid, just use it to pressurize the system. IMO kind of defeats the main purpose.
    • Check the line with each use - leaky hose on the bleeder will make a mess. Has not happened to me after five years of abuse, I've heard of it happening to other people
    • Do not over pressurize. My background is mostly with the Porsche 928 which has a very difficult clutch to bleed. The feed line to the master is gravity fed, no hose clamp. Too much pressure it blows off making a mess and a real pain to replace. Maybe the 355 doesn't have an issue like this, better safe then sorry. IIRC 10-15psi is what most recommend.
    • If the system is really stubborn, sometimes I still have to pump the brake / clutch to get things moving along better. Just watch the fluid level.
     

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