Barnett clutch...

Discussion in 'Technical Help' started by Greyman, Jun 7, 2012.

  1. Can you blow it out with an air line??
     
  2. It's a good shout mate, I'm going to go down my local friendly engineering shop tomorrow to see if they can do owt with it. I fear the worst tho, can't believe I didn't check its magnetic properties tho.
     
  3. Greyman, the dial is supposed to be used to adjust the distance of the lever to the handle bar. It is useful if you have small hands and should not affect the pressure on the piston (although it does help if you don't have Ducati finger strength). The early 748s had different clutch levers up to 1999 IIRC, yours is a later one. Your problem is most likley down to incomplete bleeding at either end.

    These things are always a pain to bleed BTW.
     
  4. The best way I found to initially bleed a new slave is to not bolt the slave to the bike, open the bleed nip and push the slave piston back, while it's back tighten the nip up, then release...Watch the fluid in the reservoir!
    Repeat until air stops coming out, then bolt up and finally bleed the normal way to get the last bits of O2 out.

    A second pair of hands may be useful for the first part.

    There's quite a large void in a new cylinder and pumping the lever seems to take forever or not work, you can also try pre filling the slave with fluid.
     
  5. Hi Denzil, yep the span adjuster is on its softest setting, but just below that is a screw-in-thread to the master cylinder which I guess is there to adjust the clutch lever free play as the plates wear and fine tune the action?

    Hi Nelson, what I ended up doing was bleeding it through with the span adjuster on its hardest setting to start with. Then going through the other settings systematically until I was absolutely sure there was no air in there. Protracted and long-winded but it seems to have worked, not to mention fluid thirsty but I can live with that. If I can get the adjuster rod out of the Oberon I'll try your method, or set fire to it, I haven't decided yet. :wink:

    How hard can it be to set a clutch up! :eek:
     
  6. Flippin' Ducati clutches are more mystic than science!

    If you can't get the spacer out I have a rod I can flog you cheap.

    Good luck!
     
  7. An alternative to getting the spacer out would be to source the shorter clutch push rod.
     
  8. A bit of the old squirty squirty with clutch and brake cleaner fluid, a gentle tap and out it popped! Bonus.

    Tomorrow I will mostly be bleeding slave cylinders, which will be nice.

    Many thanks to all, big wet girlie kisses on the bottom etc xxx
     
  9. five minute job. Use some hose on the bleed nipples to prevent back suction of fluid when bleeding.
     
  10. Could you quote me for a basket and plates for my 2000 ST4 please?
     
  11. I suggest you drop nogaromill999 a PM rather than make a request like this on open fourm.
     
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