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Hydraulic Clutch Adjustment for Stelvio and Others, Better Shifting

Discussion in 'Stelvio Chat & Tech' started by leafman60, Mar 16, 2015.

  1. leafman60

    leafman60 Cruisin' Guzzisti

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    With almost 35,000 miles on my NTX, I have recently noticed some occasional shift lever resistance when shifting. My fix was to adjust the clutch lever to accommodate mechanical wear and provide a deeper stroke of the master cylinder piston to produce a more certain release of the clutch.

    Remove the 10MM locknut from the bottom of the lever pivot pin screw and remove the screw.
    [​IMG]

    Remove the lever from the handlebar perch and loosen the grub screw that secures the threaded master cylinder pushrod.
    [​IMG]

    I put an index mark on the pushrod and threaded the pushrod out a couple of turns to tighten up the brake cylinder. Do this in careful increments and be sure to tighten the grub screw when finished.

    Clean everything up, apply some new lubricant to the lever pivot pin and hole as well as the pivot connection of the pushrod and reinstall the lever. This may also be a good time to flush and bleed the system with new 5.1 fluid.

    If you extend the pushrod too much, you will lose necessary minimal slack in the master cylinder piston that allows it to properly return in its stroke.

    This adjustment method can be used to vary the clutch engagement point of the clutch lever either way, early or late. You can see the adjusting threads on the pushrod in this picture.
    [​IMG]
     
    Last edited: Mar 16, 2015
    Fred Neely and GTM® like this.
  2. Flatslide

    Flatslide Just got it firing!

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    Great info!:nod:
    Thanks
     
  3. Dave Trant

    Dave Trant Just got it firing! GT Contributor

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    This post saved me! I was replacing the levers on my Breva 1200, and had no idea there was a set screw keeping the pin from coming out! The parts manual shows the barrel, but no pin, and I was totally baffled!! On mine, the pin is TINY and the allen key was the smallest in the set. I just totally missed it, and assumed that the screw end was the theing holding it in place, as a pic of one from an Aprillia showed that design. Thanks again!!!!
     
  4. nose2wind

    nose2wind Tuned and Synch'ed

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    Didn't even know there was an adjustment for this. Mine is at the very end/out of the lever pull. It could use a little adjustment. What do you recommend, a couple turns?
     
  5. Ardito

    Ardito Tuned and Synch'ed

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    Attached Files:

  6. John Warner

    John Warner Cruisin' Guzzisti GT Contributor

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    Because of the leverage ratio between the Lever and the Push-Rod, you only need make very small adjustments.
    I'd go half a turn maximum, try it, then adjust further accordingly.
     
    Bonafide Bob likes this.
  7. nose2wind

    nose2wind Tuned and Synch'ed

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    You trust glue to hold these parts together?
     
  8. nose2wind

    nose2wind Tuned and Synch'ed

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    Are you stating that the clutch lever for the California 1400 will interchange and reduce the pull? Do you know by how much % ? Thanks
     
  9. John Warner

    John Warner Cruisin' Guzzisti GT Contributor

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    'Glue' covers a fairly large spectrum N2W!
    A good quality Epoxy, applied properly, with correct preparation, will have no problem holding that together, particularly as the load on it is mostly in compression.

    Remember, those Aircraft you happily fly off on your vacations in, they're 'Glued' together in certain places too!
     
    roadventure likes this.
  10. nose2wind

    nose2wind Tuned and Synch'ed

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    I assume he means JB Weld or equivalent. Still, that is just epoxy, a glue. I don't trust most things to hold with glue, especially on a Guzzi...
     
  11. John Warner

    John Warner Cruisin' Guzzisti GT Contributor

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    Well, I probably wouldn't risk it with the Brake Lever, but if a Clutch Lever failed, no harm done.
     
  12. Ardito

    Ardito Tuned and Synch'ed

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  13. Bonaventure

    Bonaventure Cruisin' Guzzisti

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    I'm trying to visualize if you turn the pushrod in or bring it out to move the clutch engagement point inward on lever travel.
     
  14. canuck1969

    canuck1969 GT Reference GT Contributor

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    Screwed in to move it closer to the grip (ie. shorter stroke of the cylinder)

    Think of it as not moving the clutch plate as far out (which is basically what it is doing) by not stroking the cylinder as much. Same thing happens if you adjust the lever itself closer to the grip. The engagement point will move closer to the grip as the plate has less distance to travel back. Be careful as you can adjust it to the point that the plate will drag so make sure it is fully disengaged. Just put it on the center stand and make sure the back wheel stops when the clutch is in and in gear. As long as you can stop it with gentle pressure from your foot you are good.
     
  15. Bonaventure

    Bonaventure Cruisin' Guzzisti

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    Props to Leafman60 and canuck1069 for the info on this. Going to move mine inward a half turn to bring the engage point inward some, it is right at far (from grips) end of lever travel and I don't like it there as hook-up is sort of like an on/off switch at the moment.
     
  16. Bonaventure

    Bonaventure Cruisin' Guzzisti

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    Nevermind. Hand guard and [US spec, wired] mirror have to be removed to get good access to this (mirror removal required to get hand guard off.) W/o the NTX handguards it would be much easier to get to.
     
  17. canuck1969

    canuck1969 GT Reference GT Contributor

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    not hard to remove but understand. Try adjusting the lever closer to the grip using the adjuster dial. The closer the lever is to the grip the closer the engagement point is to the grip.
     
  18. Bonaventure

    Bonaventure Cruisin' Guzzisti

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    Seems like it moves out after the bike gets hot but could be my imagination, do Guzzi's have an issue with clutch pump up?
     
  19. canuck1969

    canuck1969 GT Reference GT Contributor

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    No...but as the fluid gets hotter it could cause the clutch to disengage further meaning the engagement point will move further out as the plate has farther to travel back. Never really paid much attention to it.
     
  20. Bonaventure

    Bonaventure Cruisin' Guzzisti

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    Going to attempt it without removing hand guard or mirror. Think if I can get a screwdriver in well enough to counter bringing the nut loose below I can get it done but the hand guard will put an angle of attack onto the screw driver. Don't have an offset.
     

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