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#703541 - 08/01/17 8:19 am crank end float  
Joined: Jan 2013
Posts: 130
peter paul Offline
BritBike Forum member
peter paul  Offline
BritBike Forum member

Joined: Jan 2013
Posts: 130
england
hi , I have a a10 1959 , the end float is 15 thou, can I still ride it or is it too far gone, will it do a lot of damage , it is a strip down of the engine I would like to avoid this as I am only a sunday morning rider your thoughts on this will be very welcome , thanks P P

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#703542 - 08/01/17 9:01 am Re: crank end float [Re: peter paul]  
Joined: Dec 2004
Posts: 8,825
kommando Online content
kommando  Online Content


Joined: Dec 2004
Posts: 8,825
Scotland
15 thou end-float is fine, continue to enjoy Sunday mornings.

#703544 - 08/01/17 9:06 am Re: crank end float [Re: kommando]  
Joined: Jan 2013
Posts: 130
peter paul Offline
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peter paul  Offline
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Joined: Jan 2013
Posts: 130
england
many thanks commando . P P

#703587 - 08/01/17 5:58 pm Re: crank end float [Re: peter paul]  
Joined: Feb 2010
Posts: 354
Red Lapierre Offline
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Red Lapierre  Offline
BritBike Forum member

Joined: Feb 2010
Posts: 354
Upstate NY
BSA Service Sheet 208 states that it should be on A10 Maximum float should be .005 in. Any error should be corrected with additional packing shims. Commando has more knowledge than I do, I'm just going by the book.


57 A10 GF
61 A7
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#703629 - 08/01/17 10:49 pm Re: crank end float [Re: peter paul]  
Joined: Feb 2014
Posts: 359
chaterlea25 Offline
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chaterlea25  Offline
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Joined: Feb 2014
Posts: 359
Cork Ireland
Hi
Check the sump plate filter for any shim debris, if there is any then the engine needs attention immediately
There are dozens of similar topics on the A10 forum
Excess endfloat is usually caused by the cush drive nut not being properly torqued up allowing movement between
the crank and main bearing inner race, this chews up the shims wears the crank mainshaft and the drive splines
On one occasion I saw a rod failure due to excess endfloat, but this was a severe case

John,


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