Cluch noise..

Discussion in 'Dakar champion (950/990)' started by Crazygreek, Nov 8, 2019 at 2:30 AM.

  1. Crazygreek

    Crazygreek Adventurer

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    Good morning!When then bike is cold I listened noise from cluch cover in neutral,when I push the clutch the noise dissapear.I clean the oil jet before 5000kms.My bike is adventure 990R with 37k kms on klock and is 1st hand.
    #1
  2. kelly007

    kelly007 Adventurer

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    Mine also does that, pretty sure it's normal. With the clutch out i think the booster assembly rattles around
    #2
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  3. Crazygreek

    Crazygreek Adventurer

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    thanks Kelly,because I wondering if I can doing something about that
    #3
  4. chopper13

    chopper13 Been here awhile

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    Jutter spring,I replaced mine with another plate and heavier springs
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  5. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    As stated above I'm pretty sure is the clutch booster also.

    But I would pull the cover and make sure your bolts are tight that compress the springs
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  6. Crazygreek

    Crazygreek Adventurer

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    thanks a lot boatman, I check it with the first opportunity.
    #6
  7. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    You dont need to drain the oil to check the clutch bolts. Just lean the bike over on the side stand. Remove the brake lever and take the outer clutch cover off. Should only get a small amount of oil dripping out.
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  8. zimtim

    zimtim Adventurer

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    Mine used to do this.
    Only though when bike was cold, once it was warmed and I had pulled clutch in a few times the noise would disappear.
    I discussed this with another owner and we decided it was just clutch plates sticking until they had a nice warm coating of oil.
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  9. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    That makes no sense. With the clutch engaged (lever relaxed) the plates are all packed together from the spring pressure. No way you can get rattling plates with clutch engaged.
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  10. zimtim

    zimtim Adventurer

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    Why would the noise go after the clutch had been engaged a few times.
    I'm not trying to be argumentative just trying to find a more reasonable explanation.
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  11. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    No problem.

    On a fully cold motor most of the oil has dripped down off the booster. When you start it the booster rattles around a bit and oil then acts as a buffer. Also once the booster ramps start to engage the noise will go away.

    To hear the plates rattle would require them to be completely dry.
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  12. Peltsi

    Peltsi Been here awhile

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    What is the purpose of the clutch booster? I had never heard about it before KTM. Doesn't other manufacturers use similar design.

    I guess I have a rattling clutch booster too. And maybe I should check them bolts also.
    #12
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  13. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    Booster gives more pressure in the clutch pack to help keep slippage at bay. This allows the use of lighter clutch springs resulting in a lighter feel at the lever.
    #13
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  14. DirtyADV

    DirtyADV Long timer

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    No need to unbolt brake lever. Just removing the pin at the back so it can be pushed down a little further and you can get the cover off.

    /Johan
    #14
  15. tomdubz

    tomdubz getting there Supporter

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    Are the jutter, judder, booster springs all the same thing? And if so, what is it actually called on the fiche?
    #15
  16. Boatman

    Boatman Membership has it's privileges ;-) Supporter

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    I assume he's talking about the "belville spring".
    #16
  17. radmann10

    radmann10 Derf Supporter

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    My 990 makes the same noise, pull in the clutch and is stops. It hasn't changed/got worse in 58,000 miles so I'm not too concerned about it!
    #17
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