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clutch problem

Discussion in 'Mechanics Garage' started by gothgod6984, Aug 18, 2010.

  1. gothgod6984

    gothgod6984 New Member

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    I have a 86 vfr 700 f2 when I got my bike out this summer the clutch was not working, So ive went thought the basics i have rebuilt both the master cylinder and the slave cylinder. I have bled the clutch, i dont have to much pressure on the clutch. the slave cylinder is moving properly im pretty sure i have all of the the air out of the lines. i have the slave cylinder off with the handle pulled in and piston out but i can push the slave cylinder all the way back in it is like it is not holding any pressure. i have even replaced the rubber gasket for the master cylinders lid and still can not get the clutch to dis engage, I dont know what else to try, it is so confusing that it wont hold the pressure i would appreciate any help.
     


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  2. TOE CUTTER

    TOE CUTTER Mullet Man

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    If you pinch the line just below the master will it build pressure?
     


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  3. donald branscom

    donald branscom New Member

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    When you say "I have bled the clutch" what does that mean?
    Even more confusing is "I don't have too much pressure on the clutch"
    That makes no sense to me. You cannot control the pressure on the clutch it is regulated by the clutch springs.
    You have the slave cylinder off. WHY??/
    You need to put it ALL BACK TOGETHER. Put the slave cylinder back on the case and of coarse make sure the clutch rod is installed.
    Bolt it all together and THEN you can put in the fluid and bleed the clutch.

    First open the clutch slave cylinder bleed valve and after pouring the master cylinder res. full of fluid then you can close the slave cylinder bleed valve.
    Then pump the clutch handle and hold and loosen the nut on the line going into the master cylinder to bleed it.

    Then pump the lever a few more times and bleed the slave cylinder.
    You should have a glass jar and hose coming off of the slave cylinder bleed valve and the hose should go to the bottom of the jar and the jar should have some fluid in it so air cannot back up the hose into the slave cylinder.

    Pump the clutch handle and open the clutch slave bleed valve again, and do not let go of the clutch lever until after you close the bleed valve.

    Repeat 4-5 times.
    If it still does not feel good try pumping the clutch lever again and bleed the master cylinder by loosening the nut on the hose on the master cylinder. It likes to bleed better that way because bubbles like going up NOT down.
    And do not forget to keep the clutch lever pulled in until you have tightened the nut on that hose or air will get into it.

    Hope this helps.

    BTW - It is normal for the piston on the slave cylinder to push all the way in. Matter of fact if you pushed it (piston) all the way in and the master cylinder did not overflow on the floor then it is proof that you do not have enough fluid or you have an air leak.
     


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  4. GreyVF750F

    GreyVF750F Member

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    Check to see where the banjo fitting to the MC is setting. A lot of times it is a higher point than the bottom of the MC and may need to rotate forward(down). Air gets trapped there.
     


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  5. gothgod6984

    gothgod6984 New Member

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    i have bled the master cylinder that is what i was trying to say, i bled it just as in how you stated how to do, and as of the clutch does not have much pressure means when i pull the handle there is not much force needed to pull the lever, and with the lever pulled the piston should not push in. at least i would not think it should due to having to hold the clutch from re engaging is what i was coming to
     


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