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Swapping Hayter 56 engines over

Posted by Graeme @ BGS on August 20, 2011 at 1:42pm in Machinery

It's raining and have a few spare hours so I am thinking of swapping over the engines on two Hayter 56 341A machines to make at least one good one.

 

Whilst I can see three engine bolts and of course the blade and then cables to disconnect, I have a query regarding the friction disc.

 

Does the friction disc just has to be tapped off or should the woodruff key need to be removed first? I suspect the woodruff key needs to come out but looking at the engine I am not too sure.

 

If anyone has done this before I would greatly appreciate some guidance.

 

Thanks

 

 

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  • Adam Pilgrim August 20, 2011 at 3:38pm

    Just take the bolt out - then technically you need a puller although this can be created out of a large thick flat plate and some bolts.

     

    Be warned, the friction disc can be either fairly loose or bl##dy tight - I have ended up sawing cranks off or cutting through the disc boss to get them off....

     

    Don't loose the woodruff key!

  • Graeme @ BGS August 20, 2011 at 8:10pm

    Thanks Adam,

     

    A good soak with WD40 and a few good tugs and off they both came.  Engines swapped over and after three pulls off she went.  I know have another 56 with hopefully another year or two working life left in it.

  • Adam Pilgrim August 20, 2011 at 8:25pm

    Glad to hear it all went OK Graeme! I converted my Hayterette to friction disc and 19" solid blade following rust related failure of the swinging blade 'pan'. That resisted hammers, WD40, a proper Hayter puller, swearing and the gas torch till I finally won after I battled with it for 20 minutes with my angle grinder and cut the blade boss to bits!

     

    Incidentally I have a old shape, full width discharge, belt drive good condition Hayter 56 for sale if anyone is interested?

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