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Thread: Sequence for bleeding brakes to ensure no air trapped in brake lines

  1. #1
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    VZ SV6 3.6 A5

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    Default Sequence for bleeding brakes to ensure no air trapped in brake lines

    I've had a look around the VZ threads and not picked up what I need to know for my Sept 2004 SV6. I want to change my brake fluid as the pedal seems a bit spongy and the two years are up for the age of the brake fluid. (All previous fluid changes were done by Holden dealer. No rubber lines have been replaced to my knowledge).
    What is the wheel bleeding sequence to minimise trapping any air in the lines, and perhaps removing any foreign matter, moisture, air etc.? I am presuming Front Right, Front Left, Rear Left, Rear Right. Right being the driver's side of the vehicle.
    Does anything special have to be done with the ABS unit?
    Thanks in advance.

  2. #2
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    HSV VZ LS2 Senator

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    You usually start bleeding from the wheel farthest from the master cylinder, just make sure you keep the master at least a 3rd full otherwise air will get into the system and if air gates into the ABS it makes bleeding the air out of the sytem a lot harder.
    When you start bleeding just keep bleeding and check ing fluid levels until the new colour fluid starts to appear then move backwards to the next wheel and so on to finally the front driver wheel.
    HSV VZ LS2 Senator, Stealth2 cam 307rwkw.http://forums.justcommodores.com.au/...ados-blue.html
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  3. #3
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    VZ Lumina..... VEII Equipe Sportswagon

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    With the ABS you shouldn't have any worries with a brake bleed... and as mentioned, if you keep your fluid topped right up constantly in your master cylinder during the process you'll be right.
    Sequence for bleeding;
    1. Left rear
    2. Right rear
    3. Left Front.
    4. Right Front

    If you have any worries about the ABS, there is a good read here about it.

  4. #4
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    Calaber is offline Nil Bastardo Carborundum
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    You can safely bleed an ABS system in the same way you would do a non-ABS set-up. The two posts above have already given you the correct sequence. Bleeding the ABS system just takes a bit longer because of the additional capacity of the system (ie, more fluid to bleed and replace). Just make sure nobody turns on the ignition while the bleeding is taking place - it could cause error messages to appear on the computer and you would need to have them cleared at a dealership or repairer with the appropriate equipment.

  5. #5
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    VZ SV6 3.6 A5

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    Hello all,
    I will try the fluid change this weekend.
    Many thanks for your information and directions.

  6. #6
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    WL CAPRICE

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    Hey,
    Thanks for a helpful post
    Let us know how it goes along with a few photos on how it's done.

    I'll probably be doing mine soon.


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