1977 T140 Clutch Basket Wear

Discussion in 'Technical Help' started by Jim Hargreaves, Dec 27, 2020.

  1. Jim Hargreaves

    Jim Hargreaves Well-Known Member

    Sep 16, 2020
    81
    68
    Holton-le-Clay Lincolnshire England
    #1 Jim Hargreaves, Dec 27, 2020
    Hi
    I need a bit of advice
    I don’t know the history of my bike(1977 T140) at all it was very beat up when I got it and not running so I’ve been stripping down and I’m at the stage where I still have the barrel on and just the crank shaft pinion ( in need of the special puller) still on. This is the first bike I’ve ever stripped apart from a couple of 2 strokes decades ago that I took the barrels off so I’m a bit green on what is acceptable wear. Up to now I haven’t found any scoring or shafts and bushes that have any play but the clutch basket and centre shock absorber slots seem bumpy as in little tiny waves where the plate tabs engage with them. I can’t seem to find any info on what is acceptable wear. Any help appreciated
    Thanks Jim
     
  2. Jim Hargreaves

    Jim Hargreaves Well-Known Member

    Sep 16, 2020
    81
    68
    Holton-le-Clay Lincolnshire England
    #2 Jim Hargreaves, Dec 27, 2020
    A few photos

    5001B1F4-9927-4830-8B14-B9DCD0846DB3.jpeg

    D72D45FD-95FF-4610-9761-8236B0635F87.jpeg

    C15ECD1A-D0DF-453A-BD75-D2FBD387C972.jpeg

    F29E7BBB-564C-4447-AE79-EB6EE2FBAEF8.jpeg
     
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  3. darkman

    darkman Crème de la Crème

    Oct 26, 2015
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    #3 darkman, Dec 28, 2020
    Do you plan to strip the engine completely Jim.
     
  4. Doc Strange

    Doc Strange Senior Member

    Aug 8, 2019
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    #4 Doc Strange, Dec 28, 2020
    Love the shape of those US-Spec Bonnies' tanks.

    Hope it ends up as you'd like it :)

    DS
     
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  5. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
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    #5 Tricky-Dicky, Dec 28, 2020
    Doesn't sound too bad it's the damper rubbers that wear and then the plates start to get hammered and the slots can get worn I have seen the basket slots really notched and the ends of the plate tabs really bad, if minor you can dress with a file.
     
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  6. Jim Hargreaves

    Jim Hargreaves Well-Known Member

    Sep 16, 2020
    81
    68
    Holton-le-Clay Lincolnshire England
    #6 Jim Hargreaves, Dec 28, 2020
    Thanks for the reply I’ll check the rubbers
     
  7. Jim Hargreaves

    Jim Hargreaves Well-Known Member

    Sep 16, 2020
    81
    68
    Holton-le-Clay Lincolnshire England
    #7 Jim Hargreaves, Dec 28, 2020
    Yes my main aim is to clean out the sludge tube and check the crank bearings, cam bushes and clean out all the oil ways
     
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  8. Jim Hargreaves

    Jim Hargreaves Well-Known Member

    Sep 16, 2020
    81
    68
    Holton-le-Clay Lincolnshire England
    #8 Jim Hargreaves, Dec 28, 2020
    Thats what attracted me to the bike the US-spec looks so cool. I just got my hands on a drop side seat to complete the look.
     
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  9. Iron

    Iron Guest

    #9 Iron, Jan 3, 2021
    Last edited by a moderator: Jan 3, 2021
    Yours look pretty good in comparison to some I've had. You can file them down a bit to remove the lips. Check the clutch plates as well as they can get lips on the tabs and can stick. A right pain in traffic as you need to get into neutral every time you stop as it'll want to creep forward even with the clutch lever pulled right in. Eventually the only cure is a new clutch basket, but yours looks fine. You'll tell when you are riding it.

    Worth having a look at John (lunmad) doing his stuff on youtube. No expensive tools doing his thing in his lean-to. Just an ace bloke who knows his way round the old trumpets. Have a look to see how bad his clutch baskets are - jeez.

    https://www.youtube.com/user/lunmad
     
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