900ss Ie Rear Brake Bleeding

Discussion in 'Supersport (1974-2007)' started by ducatijones, Jul 4, 2015.

  1. Trying to get rear brake working. Have bled til no air. Pads have plenty of meat on them. Barrels seem to be moving OK. One issue is the brake pedal touches the fairing when depressed. Its as though the pedal wants to go further before it will bite. Anyone had a similar problem?
     
  2. Seems like you need to adjust the pedal position??

    However, on my carbed SS, it took ages to bleed the rear brake (I couldn't be bothered to take the caliper off and hold it up) so in the end I cracked the hose union at the master cylinder a bit and bled it there.........It worked.
     
  3. Did you lube your Pistons??
     
  4. No but I often grease my palm.
    Persevering with bleeding, getting there. Tempted to lengthen pedal push rod on adjuster but sticking with bleeding for now.
     
  5. how much travel do you have from rest to feeling pressure ?
     
  6. Before I started getting serious about solving the problem there was about 50mm of travel but the pedal was hitting the fairing with no discernable brake pressure on the disk. After an age of constant bleeding the pedal was feeling better but in the end had to extend the push rod to shorten the stroke and get the bite half way down the pedal travel. I will find out how good next Saturday as its booked in for MOT.
     
  7. My pedal lever end moves approximately 3mm - 4mm which is free play........minor pressure felt almost immediately at say, 5mm.........full pressure ie hard pedal, max 20mm.
     
  8. Agree, my carb'd Monster is the same. Almost instant pressure applying the brakes when depressing pedal. I replaced the master cylinder a week ago on it and after bleeding it pedal needs very little movement to apply rear brake.
     
  9. The upper end of the adjustment pushrod should have a small amount of free play between the MC piston.....................more than 1mm will give quite a long pedal travel before the pressure is felt.
     
  10. Think one of my piston's is now sticking as my back brake is useless, pads have been replaced and adjustment is fine......What lubrication is best to use to stop this?
     
  11. had conflicting info on this silicone lubricant spray should be ok as shouldn't damage rubber seals
    (someone will probably say no never do that)
    strip clean and rebuild using rubber grease
    some people say drip brake fluid round the piston and move piston in and out to lubricate as it wont damage the seals
    but my thought is that brake fluid absorbs water therefore
    increases possibility to rust piston ......maybe
    personably I would try silicone spray

    but don't spray with wd 40 unless you don't want any rubber
    seals left
     
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  12. Or take the caliber off,take the pads out .put a block of say 25mm thick between the Pistons, to stop them popping out when you squeeze the brake pedal to move them outwards. Give the Pistons and anything else you can get to a good clean ,maybe using a toothbrush. Make sure that the Pistons are moving nice and freely. That should help keep the in good order. Important that the seals are in Google condition too.
     
  13. I asked for information about rear brake service kits in another thread. I have found a company that sells these for Ducati's especially those with Brembo brakes which I understand are difficult to get parts for. The company is Powerhouse and they are based in Chesterfield ( my town, yay) 01246 260665. They are on Ebay but I rang them as they did not list my bike in their Ebay shop. About £35 for new pistons, seals, bleed nipple and washers.
     
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