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Clunk from final drive


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#1 madoc

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Posted 21 March 2015 - 05:49 PM

I sometimes get a clunk from my final drive, I think, when the bike is coasting,
Doesn't seem to be any obvious play anywhere and I cannot force it, if I jack the bike up and run it.

It's like the final drive or maybe gearbox is playing catch up to the road speed.....

I am guessing I need to do a full strip ......



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#2 lobofuego

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Posted 22 March 2015 - 08:10 AM

Hello....Well not really sure of which bike you speak!...however put engine in gear and turn rear wheel...slack will reveal itself, either gearbox or axle...but a clonk would most probably be down to UJ...best remove it and check for tight spot...check all of the obvious, first as it is much more difficult to diagnose a problem when you have stripped it all to bits!!

#3 Brian Crean

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Posted 23 March 2015 - 08:02 AM

Worn Splines?

#4 Ken Ulrich

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Posted 15 April 2015 - 10:46 PM

Wisdom would indicate a complete tear down to find the offending clunk, it can be about anywhere of all the above, better to be safe than sorry.....Ken

#5 lobofuego

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Posted 17 April 2015 - 04:41 AM

But Ken....wisdom would be to ensure you have located clunk , before you strip down everything, to its component parts, and end up with a crankshaft in your hand...and a worn out uj you never paid any never mind to as you sipped your napolian brandy....A good recce is never wasted!....first find fail, then drink beer....then find spanner and hammer....

#6 Ken Ulrich

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Posted 21 April 2015 - 11:31 PM

I have never tasted napolian brandy, least of all when I'am working on a problem. The first problem is that it is rare to find the crankshaft in the rear end, and with a worn u-joint attached, finding a flail amongst all that, wow! Now you for sure need a beer....several....I don't think you need spanners and hammers, would be too hard to reach the problem....call the nearest proctologist!
you don't need me, my practice is limited to Dnepr's......Ken




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