Brake Bleeding: How much to fully flush the front...

Discussion in 'Australian Motorcycles' started by Jason Burton-Woods, Sep 9, 2004.

  1. Of a Ducati Monster 620.... Dual front brakes, I ran about 150mls through
    it, but couldn't tell if it was flushed since my new 5.1 fluid is the same
    colour as the old stuff in it... damn...

    I guess I could either Dye the stuff in there and run it through, or just
    buy a different colour 5.1 but neither is the preferred option.

    ANY idea how much the system would take to fully flush?

    Thanks all
    JasonBW - Wollongong
    Jason Burton-Woods, Sep 9, 2004
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  2. Jason Burton-Woods

    manson Guest

    No idea how much to fully flush.

    Are you trying to change from dot4 to dot5.1?

    To be sure, I'd drain the system completely, refill, bleed, then repeat
    the drain, refill, bleed.

    After all, you probably had to buy a container of fluid three or four
    times to big for what you want to do.

    manson, Sep 9, 2004
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  3. Thanks for that CrazyCam,

    I ran through about 4 master cylinders worth before packing up, thing is -
    I dont want to get any air in the line so I'm not keen on fully 'emptying'
    it all...

    Ahh, I'll run through a few more in case..

    Jason Burton-Woods, Sep 9, 2004
  4. Jason Burton-Woods

    phil Guest

    To avoid air in the line (nothing totally does it) fill it from the bottom can get messy but it does the trick. Also gently tap the lines to
    dislodge any bubbles.
    phil, Sep 10, 2004
  5. Use the whole bottle.
    Pisshead Pete, Sep 10, 2004
  6. Jason Burton-Woods

    atec Guest

    drain the lines , then make a fitting which will allow you to connect a
    clear line to the bleed nipples and force the new fluid up , close the
    nipple and wait a few minutes then bleed the caliper conventionally ,
    easy fast and messy :_)
    but it works.
    conventional means use the clear line and drop then end into a jar with
    a little fluid to stop air being sucked back
    never re use fluid .
    atec, Sep 10, 2004
  7. Jason Burton-Woods

    Mad Biker Guest

    one trick i was told was to leave the top off the master, and the air will
    eventually work its way out with in a few hours.. with the cap on it still
    will go to the top of the res but will take a few weeks...
    Mad Biker, Sep 10, 2004
  8. Jason Burton-Woods

    Theo Bekkers Guest

    Be careful. I don't know about Ducatis but Guzzi master cylinder seals do
    not like Dot 5. They swell and stick. The manual for my Guzzi says do NOT
    use Dot 5. I learned the hard way.

    Theo Bekkers, Sep 10, 2004
  9. Thanks, yep, I heard that, its 5.1 though which is fine.

    Thanks for the tips !!

    Jason Burton-Woods, Sep 10, 2004
  10. Jason Burton-Woods

    Knobdoodle Guest

    Dolby surround brake-fluid!
    Knobdoodle, Sep 10, 2004
  11. Jason Burton-Woods

    Joe Murray Guest

    I think it's actually pronounced Dobly, Clem.
    Joe Murray, Sep 14, 2004
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