Worn shaft and housing

Discussion in 'Help Wanted' started by spannerman, May 21, 2008.

  1. spannerman

    spannerman New Member

    Does any one have any advise on solving the problem of a worn crankshaft end were a clutch drive fits ,the shaft diameter is 1" and steel the drive dog is cast the bearing surface is 1 1/2".it has a small keyway it is a slopy fit no lift but it does wobble is there any miracle adhesives out there.it is keyed and a grub screw from opposite sides :? ANDY
  2. shaggy3000

    shaggy3000 Member

    Hi mate what i have done in the past is turned down a sleeve thats couple of thou smaller that your current shaft then heated it up till slides on let it cool down you will do well to move it. If you dont mind me asking what is it for.

    Any good engine builder will be able to help you on this..

    Cheers gaz
  3. shaggy3000

    shaggy3000 Member

    Sorry mate just reading your post again that fix would not work due to the key way, Could you not bush the clutch housing.

    Could you send a pic or post a pic so i can get better idea might be able to machine you something up FOC.

    cheers gaz
  4. rob1808

    rob1808 New Member

    Try Loctite 660. Not cheap but appears to be quite effective. My last experience of this was recently on a steam engine flywheel and shaft where there was was some wear.
  5. admin

    admin New Member

    As rob1808 says, Loctite 660, see

    We have used it a number of times, it will cope with up to a 20 thou gap.

    The purists don't like it (proper engineering solution etc) but if it had been available 100 years ago, engineers then would have used it :)

    Be careful when using it to ensure that you maintain the alignment of the clutch drive.

  6. goodchip

    goodchip Member

    Like Paul says it's good stuff.Why not take advantage of modern methods if it makes life easier. Don't get it on yer willy though! John
  7. ArthurG

    ArthurG New Member

    Crikey John, I would put it on with a spatula! :)

    Arthur G
  8. admin

    admin New Member

    If you think 20 thou will make a difference.........

  9. campingstoveman

    campingstoveman Active Member

    I can understand Arthur on this one as anything is better than nothing at all. :wink:

    Martin P
  10. spannerman

    spannerman New Member

    THANKS for your replies the the engine is a villiers MK15 fitted to a monrotiller series 3 rotovator .I have as shaggy advised shimed the shaft on previous engines I warmed a piece of 15mm copper tube and knocked it on to slightly increasing diametre shafts until it fit the crank then fitted the clutch drive dog ,as you can imagine the wall thickness was thin so to remove it across the keyway was easy ,this plus loctite bearing fit a key and grub screw that time it was a sucess.this time this engine it wont stand a shim i have a tube of chemical metal without the instructions on its applications i have used it to seal a diesel leak on a fuel tank and it worked perfectly its made by plastic padding .I dont need 20thou on this occasion JOHN and thats not bragging but i would reccommend protection at all times wether using your spatula or not :lol: ANDY

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