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Thread: 'bleeding' $#!++y hydraulic clutch on RSVR Factory

  1. #1
    Baby Twin wamo's Avatar
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    'bleeding' $#!++y hydraulic clutch on RSVR Factory

    bike manages 400-700km between clutch bleeding regardless of methods used. Supposedly all efforts (squeezing, pumping, tilting, & praying) have been tried for a permanent solution.
    I've been told that getting rid of the Aprilia hydraulic component & replacing with one from a Ducati (brake?) will fix. Anyone know which part number to order?

  2. #2
    Evil Twin twintorque's Avatar
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    Have you tried reverse injecting the fluid? (filling it from the slave upwards with a syringe) not sure about the master cyl, but the MPL slave cyl is a popular upgrade, seals are better than the standard item.

  3. #3
    Baby Twin wamo's Avatar
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    yup... I have
    MPL? more info please?

  4. #4
    Superbike Twin Dog Tyred's Avatar
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    MPL Tuning parts (german company) see link below

    http://www.mpl-tuningparts.de/shopd/...er_aprilia.php

    Clutch slave is a very popular upgrade in the UK as it gives a lighter clutch action than standard (yeah, yeah, I know, whimps all of us).

    If you order one by email quote Rsvzone in the title of the email and they should give you a cracking price. Not sure about delivery to USA/canada thou.

    Cheers

    Dog

  5. #5
    Superbike Twin knightster's Avatar
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    get one dude! well worth the cash, inevitably it will be more expensive for shipping but the difference is night and day.

  6. #6
    Jussi
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    Fitted MPL to mine yesterday and bled with vacuum bleeder.
    Tested in garage since we have 50 cm of snow outside road test awaits.
    I have a picture of it in my garage.

  7. #7
    Superbike Twin knightster's Avatar
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    feel for ya mate. weather slowly, slowly starting to improve here. the sun even came out and temperatures soared to double figures! get the shorts and T shirts out!

  8. #8
    Baby Twin wamo's Avatar
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    I'm on it. Thanks for all your help guys, looks like my solution and salvation. Though seems I don't need to rush. Check out our current riding conditions in "my garage" ...we've had lots more since this was taken, but it's only -8C.
    Good thing I have an electric vest.

  9. #9
    Dolenc
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    If it works for some time and then it dies there must be air or moisture coming in the system somehow.

    I dont think changin the slave would help, there must be a problem elsewhere.

    Check if there are any signs of fluid leaking. There is also a posibility that the pipe is defected or even the smal tube that connects the master cylinder(the lever) and the reservoir lets the moisture in.

  10. #10
    LEGS
    Guest
    I agree it's a problem with the self bleed mechanism on the clutch master cylinder next to the clutch lever not the clutch slave cylinder which is located on the engine.

    This is a known problem to Aprilia and it affects some bikes and not others. There was a product enhancement on earlier 2003.5 and 2004 bikes for a revised master clylinder but your bike is a later 2007 model.

    The problem occurs when heat from the engine boils fluid in the slave cylinder which then rises up the clutch fluid line to the master cylinder. The self bleed should expell the air when the clutch lever is pulled in, but on yours this appears not to work.

    i'm not sure as to what the remedy is on the later bikes. It might be worth a PM to Griff aka Fusebox on this site for more info

  11. #11
    Baby Twin megpet's Avatar
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    Had the same trouble when on a long trip, Philip Island back o Perth. on doing the reverse bleed I was turning the lever on the bar so the master cyl didnt point downward. Forgot to move the lever back down on the last time and although a slightly awkward position I have not had to bleed for over a year, also changed the fluid to Motul 600 rather than dot4

  12. #12
    Jussi
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    Ill have Motul 600 (RBF) and its DOT 4, however, has a high boiling point.
    Works on my rear brake and now I changed it to clutch as well.

  13. #13
    fusebox
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    Quote Originally Posted by wamo View Post
    bike manages 400-700km between clutch bleeding regardless of methods used. Supposedly all efforts (squeezing, pumping, tilting, & praying) have been tried for a permanent solution.
    I've been told that getting rid of the Aprilia hydraulic component & replacing with one from a Ducati (brake?) will fix. Anyone know which part number to order?

    hello Wamo!!
    sorry about the delay in gettin back to you, im slowly drowning in work and trying to move the workshops from where we are to just round the corner plus work plus.....yaddaaa yadaa!! ( im a bloke doing more than one thing at the same time is taxing for goodness sake!! hehe!!

    im (as always) with the legs meister on ths one its the clutch master cylinder that is causing the problem here, i assume youve got an early factory?? or R 04 onwards.....? looks like the picture on your avatar says later

    if this is the case then, this is a modified version of the technical bulletin that was released by aprilia that may help and or confirm the issues you have!

    Dear Dealer,
    referring to the problems of difficult neutral
    engagement, we have concluded that they are caused by the presence of air inside the clutch master cylinder.
    Affected master cylinders are the ones manufactured up to 21st October 2004 (marked
    4K21): the ones manufactured from 22nd October (marked 4K22) and after that date do not
    show these problems because there is an additional fluid feed hole that works as bleeder.


    please have a looky see and see how yours fairs up....
    stay in touch mate and we'll work through this no worries!!
    Griffer!!

  14. #14
    Baby Twin wamo's Avatar
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    thanks mate... I'm anxious to put this behind me. It's an '07.
    It's a usage factored thing. Long trips w/ little clutch... less problem. More stop & start means more problems. I'm grateful for CRG levers as it allows me to continually compensate until neutral becomes too difficult. $#!++y

  15. #15
    fusebox
    Guest
    check out the markings on your master cylinder and cross reference against the post above...see what you got !!

    let us know and we'll crack it mate!
    meantime ill be doin some research for you into alternative clutch master cylinder to stop the issue and add some trickness to the proceedings!!

    your not the only one to suffer this continual pain in the neck mate dony worry there seems to be a lot of other guys following this thread ...it seems that you could be carrying the torch for a few of us dude!!

    catchya soon!

    Griff

  16. #16
    Baby Twin wamo's Avatar
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    will do... I'll have access by end of next week and let ya know. thx

  17. #17
    fusebox
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    may the force be with you!!

  18. #18
    Baby Twin
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    Wamo did you get that clutch master cylinder figured out? I live in the Kootenays so the 05 is away for the winter and want to know about a fix. Did you ever look into the KTM 61002032000 part # I saw posted in the forum?

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