1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

900ss Clutch Master Cylinder Lever (remote Reservoir) Rebuild?

Discussion in 'Supersport (1974-2007)' started by =^..^=, Oct 13, 2021.

  1. I've got an issue with the clutch on my 94 900ss - and it does not appear to be the usual slave cylinder leaking.

    What happens is I squeeze the clutch lever and it operates the clutch (duh!) but if I pull / release lever in quick succession it seems to go into a hydraulic lock where the clutch lever is out but solid. It does not let the fluid back into the reservoir - it slowly fills the reservoir again (over about 20 seconds..)

    Or alternatively you squeeze the lever and when you release the lever the fluid "jets" back into the reservoir...

    I thought I'd be able to get a kit of seals etc and rebuild the lever but unlike the integral reservoir lever I can't find a kit and there is no "exploded diagram" of seals etc shown here.

    https://oem-parts.hu/en/parts/ducati/1994/900-ss/handlebar-dm-012263-handle-bar

    Is it re-buildable ???
     
  2. The coffin style is 13mm you can get a rebuild kit for it. Not sure about the remote reservoir.

    Amsktm are worth a try, KTMS of the same era used the same Brembo brakes on some models, I've got a kit from them previously
     
    • Like Like x 1
  3. I would strip down the master cylinder and give it a really good clean out (sounds like something is blocked in it) You’ll probably find the seals will still be in a good useable condition. Definitely worth trying and it’ll cost you nowt
     
    • Like Like x 1
  4. I second the KTM route for seals.
     
    • Like Like x 1
  5. Thanks guys - I'll pop it apart, measure the piston diameter etc etc - and post back what I find so we have a note for the next time some one needs to know.
     
    • Like Like x 1
  6. It'll tell you on the side I think. A PS13 for example, is 13mm
     
    • Like Like x 1
  7. So post 2000 for example, it's a 12mm
     
    • Like Like x 1
  8. Here you go....
    13mm
    Fitted to 1994 to 1997
    Screenshot_20211014-123152_Chrome.jpg
     
    • Like Like x 1
  9. oh wiow - thanks for digging that out - I'm not near the bike at the mo' so I was going to take a look later.

    So in effect it's the same kit as the integral / coffin clutch master cylinder...
     
  10. Jeez, is that you in the speed wing??
     
    • Like Like x 1
  11. Yep. That's me over Empuraibrava in Spain. Still been faster in a wingsuit (182mph) than I've been on a motorcycle (177mph)
    I used to jump at a place in the UK called tilstock which is down the A41 from Whitchurch. The chief instructor at the. Drop zone lent me a high performance canopy which was mega fast across the ground and I 'broke the speed limit" flying alongside the A41..
     
    • Like Like x 2
Do Not Sell My Personal Information