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No front brake pressure after fluid flush.

Discussion in 'Hangout Lounge' started by BillB, Oct 22, 2010.

  1. BillB

    BillB Active Member

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    I flushed the brake fluid out ... Unplugged the intake hole on the master cylinder for obvious reasons ( dirty brake fluid ).

    NOW I can not get it pressure to build pressure.
    Sure I tried pumping it up and holding and releasing the caliper drain 5 times.

    I read on here to bungee chord the front brake handle over night and it'll fix it.
    Do I do that with the lid on or off?

    I'd sure like to ride it to poker tonight if anyone knows anything else.
     
    BillB, Oct 22, 2010
    #1
  2. SLKid

    SLKid Active Member

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    Take the Caliper off.
    Pump up the brake until the caliper barely slides up on the rotor.
    Attach.
    Then try pulling the brake.
    Worked for me after I rebuilt my calipers

    -Chris
     
    SLKid, Oct 22, 2010
    #2
  3. BillB

    BillB Active Member

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    Im on it.
     
    BillB, Oct 22, 2010
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  4. BillB

    BillB Active Member

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    It worked SLkid. I assume I can just bleed em out and it'll stiffen up more.
     
    BillB, Oct 22, 2010
    #4
  5. RickCoMatic

    RickCoMatic Well-Known Member

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    Before you do anything ...

    Level the Brake Master
    Take-off the Cover
    Remove the Rubber Gasket and Diaphragm.

    Fill the Master Cylinder ... Half-full.
    Operate the Brake Lever and OBSERVE the Inside of the Reservoir.

    IF Brake Fluid --> "Fountains-Up" from the Cylinder Replenishment Orifice
    (A tiny Drilled Port into the Cylinder at the Bottom of the Reservoir)

    "Fountains-Up" ... like a miniature Old Faithful ... when you squeeze the Brake Lever ...

    STOP trying the Bleed the Brakes.
    You'll never get Hydraulic Pressure back.

    Your Master Cylinder NEEDS to be Rebuilt.
    The Hydraulic Seals are shot.
    Install a Rebuild Kit.
     
    RickCoMatic, Oct 22, 2010
    #5
  6. SLKid

    SLKid Active Member

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    Glad it worked. Stumped me for a while until i just.. tried it. Now she brakes fine, a little squeaking when Rotor is hot and brake is applied, so I think I might just sand the edges of the pads again
    Rebuild kits are fairly inexpensive. Couldnt hurt
    -Chris
     
    SLKid, Oct 22, 2010
    #6
  7. BillB

    BillB Active Member

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    It got me riding again and that is the whole idea.

    I bought this thing to RIDE when the weather is nice.

    I have all winter to rebuild portions of the bike that are not perfect.
     
    BillB, Oct 23, 2010
    #7
  8. jdpesz

    jdpesz Member

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    If your bike still has the original rubber brake lines, you might want to consider adding steel braided brake lines to your winter replacement list. It made a big difference on mine. Chacal has them.
     
    jdpesz, Oct 30, 2010
    #8

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