rear brake help

Discussion in 'Maintenance' started by keithg1748, May 10, 2015.

  1. keithg1748

    keithg1748 Active Member

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    hi can anybody give me advice on the problem with me still having no brake after 3 hours of bleeding , I put standard rearsets back on , been bleeding and finally got clear fluid through , but still no rear brake , its a 13 blade and non abs. thanks for any help.
     
  2. Mr OCD

    Mr OCD Well-Known Member

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    How are you bleeding it? Usually a five min job to do!
     
  3. keithg1748

    keithg1748 Active Member

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    ive used a syringe and pushed fluid from the bleed nipple to m/c , then used a one way valve to bleed it used a full bottle of fluid , its now a clear fluid but I just still have no pressure in the pedal and no brake,
     
  4. Mr OCD

    Mr OCD Well-Known Member

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    Forget one way valve ... Clear bit of hose on to nipple ... Other end into a jar ...

    Open nipple, push pedal down, close nipple, let go of pedal and repeat ... Keep doing it until no bubbles and then pump pedal a few times ... How does it feel then?
     
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  5. Mr OCD

    Mr OCD Well-Known Member

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    Forget one way valve ... Clear bit of hose on to nipple ... Other end into a jar ...

    Open nipple, push pedal down, close nipple, let go of pedal and repeat ... Keep doing it until no bubbles and then pump pedal a few times ... How does it feel then?
     
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  6. Great Guy

    Great Guy Well-Known Member

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    If the fluid is clear then it must work, one would of thought.
    I did it 2 weeks ago, used the old fashion method. That is, a clear tube, one end immersed in brake fluid, 1/2 turn of the nipple etc, etc
    There are a number of demos on youtube.
     
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  7. keithg1748

    keithg1748 Active Member

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    cheers guys I will have another go tomorrow and let you know , ive had enough for today .
     
  8. N1xxl

    N1xxl Member

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    Have you bled the banjo on top of master cylinder? If you had the system apart almost certain this is the root cause of no pressure.
     
  9. keithg1748

    keithg1748 Active Member

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    all I did was removed the gilles rearset , then put the standard ones back on which I had powder coater but I didn't strip anything else , that's what I cant understand.
     
  10. N1xxl

    N1xxl Member

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    Yes true, did you happen to allow reservoir air to rub up hose into master cylinder? I would crack open top banjo as you depress lever to expell poss trapped air.
     
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  11. keithg1748

    keithg1748 Active Member

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    will have a bash tomorrow , thanks.
     
  12. Dave

    Dave Member

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    I would do exactly the same as MrOCD suggests, normally a 10 minute job. You clearly have air somewhere in the system but you'll get it sorted;)
     
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  13. keithg1748

    keithg1748 Active Member

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    hi fellas back again I tried what you said ocd but still no pressure , I also undid the the nut on the m/c pushed pedal down and there was fluid coming out so tightened it , did the same on the hoses nut on the caliper nothing no fluid , does the plunger have a setting on the m/c cause I had to unscrew that to put back to standard. but it does push quite far in and pedal hits bottom , thanks again.
     
  14. Dave

    Dave Member

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    When you depress the brake lever are you getting brake fluid coming out of the bleed nipple?
     
  15. N1xxl

    N1xxl Member

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    Hi is it standard rear caliper right way up? What is the highest point either caliper or hose or m/c banjo? Take off caliper raise so its the highest point checking that from the m/c banjo to the caliper bleed nipple and no dip in hose you may even need to take the lower hanger bolt out to pivot footrest to ensure that the m/c banjo fitting runs upwards. Get help to hold caliper, open nipple depress lever, close nipple release lever and repeat until u have pressure.
     
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  16. keithg1748

    keithg1748 Active Member

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    now and again little spurts then nothing , there is no pressure in the pedal , I think I may need a vacuum bleeder to drag the air out and the fluid through.
     
  17. keithg1748

    keithg1748 Active Member

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    cheers bud will try that .
     
  18. Mike07

    Mike07 Active Member

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    You may have to bleed the master cyl properly then the caliper.
    Mike.
     
  19. Dave

    Dave Member

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    Sounds like a good idea N1xxl is suggesting. Another idea which is a bit unconventional is to put a clear hose on the brake nipple, open the nipple and gently suck the hose, keep an eye on the reservoir and don't drink the brake fluid :eek:. I had to do this on a VFR clutch when the lever just could'nt push enough fluid but make sure you have a long piece of clear hose so that you can see the brake fluid.:D
     
  20. N1xxl

    N1xxl Member

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    100% trapped air, air will trap at any high point could be the rise in the hose or in the master cylinder as normally the banjo points downwards and the caliper is normally lower which adds to the problem. Great things bleed banjo bolts tho not always practical.
     

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