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Thread: MhR900R/Mille 1983 Clutch Torque Settings Help!!!!!!!!!!!!

  1. #1
    Join Date
    18.08.2015
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    Lancashire
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    Ducati MHR900R
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    Default MhR900R/Mille 1983 Clutch Torque Settings Help!!!!!!!!!!!!

    Hi,

    I am rebuilding the clutch having replaced the seal behind it on my 1984 MHR and cannot find anything in the various manuals that confirms what torque setting the locking ring that retains the clutch outer housing should be set at.

    My reading of the manuals is that the nut securing the inner clutch drum should be set at 73 foot pounds but nothing about the one behind it.
    Any advice from someone who has done the job or has access to a better manual would be much appreciated.

    The new seal is weeping as indeed I am and I am wondering if this is to do with my current torque setting of 50 foot pounds for the retaining ring as it does not want to turn much further than this with a normal length wrench.

    Thanks,
    Nigel.

  2. #2
    Join Date
    24.05.2011
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    S Yorks, UK
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    '97 900 SL
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    Try Ducati Technical Services in Wakefield

  3. #3
    Join Date
    11.02.2013
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    I can't see another nut apart from the one you mention (part # 41 in the diagram), please will you identify it on the diagram below?

    I though the oil seal was a push fit into the clutch housing, itself attached to the crankcases by M6 Allen screws (part # 18 in Tav.2) - no nut!
    Last edited by Vacant Possession; 14.03.2016 at 08:31 AM. Reason: Clarification...

  4. #4
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    19.04.2013
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    There is a locking ring 38 and a clutch nut 41 50lb should be more than enough as its the nut behind thats holding it all together.
    Check for slack in the bearing or wear on the shaft and make sure your seal is square.
    Last edited by ducatipaddy; 14.03.2016 at 02:04 PM.

  5. #5
    Join Date
    11.02.2013
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    Ha! Hi Paddy, your eyesight is better than mine
    Quote Originally Posted by ducatipaddy View Post
    There is a locking ring 38 and a clutch nut 41 50lb should be more than enough as its the nut behind thats holding it all together.
    Check for slack in the bearing or wear on the shaft and make sure your seal is square.

  6. #6
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    Hi Paul
    I don't think their is a workshop manual to cover the Mille ? I haven't even seen an addition to the std manual which is unusual for Ducati.

  7. #7
    Join Date
    18.08.2015
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    Lancashire
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    Ducati MHR900R
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    9

    Default MHR 900 R Torquew Settings Good News

    Thanks Guys for the input.

    Yes 38 is mentioned at 98 nm '/ 73.5 foot pounds in the w/shop manual but nowt for locking ring 41.

    Tried a couple of specialists and was none the wiser.

    I have torqued up 41 to 98 nm as well which was in effect another 2mm on the circumference of the turn as was advised by one dealer to get a long arm and use that! which seems a little OTT.

    Re the leak the culprit has now been found and is worth a mention.

    On dismantling the clutch I found that the new seal was as dry as a bone and further investigation has found a smaller seal, which sits directly between 40 and 27 recessed in bearing 35 on shaft 26 that is not shown on the diagram.

    This seal had gone hard and was partially split and came out with some side pressure off a small screw driver! unlike the other which was a b.....d to get out.

    Also 26 was missing probably perished off the clutch adjustment rod which could allow a small seepage from the slave cylinder.

    All now back together and will be test riding tomorrow and keeping my fingers crossed.

    All the best,

    Nigel.

  8. #8
    Join Date
    29.05.2018
    Location
    Sweden
    Ducati models
    Ducati MHR 1982 and Mille
    Posts
    2

    Default Number 35 is used on many other Dukes.

    https://www.stein-dinse.biz/product_...02#prettyPhoto

    Mine was also perished.
    The number on this seal is: DPSM 35477 there is also two names on the seal, Angus and Cago.
    I hope that the leak will be cured.

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