456GT; deaeration of self leveling system | FerrariChat
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456GT; deaeration of self leveling system

Discussion in '456/550/575' started by franschman, Dec 26, 2017.

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  1. franschman

    franschman Formula Junior

    Dec 18, 2017
    362
    Holland
    Full Name:
    Bart
    #1 franschman, Dec 26, 2017
    Hello all,

    I have recently joined this forum and this here is my first question;

    On my 1995 456GT that I recently bought and is in need of 'some' TLC, I had to replace some piping of the self leveling system due to damage to these pipes (pressed flat). I drained part of the system and found the system and the (red) oil full of air. Also I took out one of the shock absorbers and found the leveling part filled more with air than oil.

    When I have put it back together, how best to purge the system?

    The manual says the system is self-bleeding and the control valve is fitted with a bleeding screw, but this is obviously not at the highest point...

    Thanks for sharing!

    Bart
     
  2. cls

    cls Formula 3

    Jun 12, 2007
    1,663
    Los Angeles/Montreal
    Full Name:
    Chris
    #2 cls, Dec 26, 2017
    It's self bleeding and shared with the power steering. Fill it, drive it, check it, refill as necessary.
    If you're doing any work on the system, consider replacing the "bombs" as well as checking all of the shocks carefully for leaks. There is a known weak spot with a seal inside the shock that will leak out of top of the shock where the adjustable rod exits.
     
    Il Tifoso likes this.
  3. rviani

    rviani Karting

    Jun 22, 2005
    81
    NJ
    Full Name:
    Ron Viani
    #3 rviani, Dec 27, 2017
     
  4. rviani

    rviani Karting

    Jun 22, 2005
    81
    NJ
    Full Name:
    Ron Viani
    #4 rviani, Dec 27, 2017
    I had the same concerns when I removed and replaced a shock (for the above reasons) several years ago. Not sure if it was necessary but I "bled the system" by cracking open the fitting at the shock with the engine running. While I did not see any obvious air discharge it's easy enough to do and I have had no problems since.
     
  5. sully456

    sully456 Rookie

    Feb 21, 2011
    40
    New Zealand
    Full Name:
    Steve O'Sullivan
    #5 sully456, Dec 27, 2017
    Hello, I have replaced my Accumulators (With BMW equivalent) and shocks after one shock burst (The accumulator had failed on that side) and the shock burst when I hit a pot hole, on replacement I topped up oil and started engine, quite a bit of air came out of the hydraulic oil and then the rear of the car lifted to the correct height.
    I had to top up the oil level again, and while operation the power steering more air came out of the oil. All was ok and I did not bleed the system. The manual says it is self bleeding.
     

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