Clunk from the back end

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Chris
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Clunk from the back end

Post by Chris » Tue Sep 17, 2019 10:51 am

A few miles from home the other week, doing 30 and started hearing a quiet clunk from the back end.

As we slowed and pulled over it got louder and was coincident with the driveshaft or wheel rotation (still on RGBs - post 63 setup)

Nothing obviously amiss so we set off home again and from a start the clunk is really quite loud, getting quieter at speed I suppose because of the inertial torque being high from a standing start.

Up on stands now, wheels off, nothing external appears loose, and running the drivetrain at low speed produces no clunk at all, but of course there is no road resistance.

So where next - any ideas from the floor as what it could be?
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vwJim
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Re: Clunk from the back end

Post by vwJim » Tue Sep 17, 2019 1:41 pm

Start with the easy stuff, check the handbrake I operation / remove the drums / inspect the mechanism / hub splines etc.

Support the driveshafts at running height / level, drain the reduction boxes / check the oil for debris / replace with new
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Re: Clunk from the back end

Post by Chris » Tue Sep 17, 2019 3:15 pm

Thanks Jim, will investigate, just seemed quite a big noise to be brakes but you never know.

Just read a thread on the Samba about worn fulcrum plates causing a definite clunk...
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Re: Clunk from the back end

Post by philsparks » Tue Sep 17, 2019 8:02 pm

Hi Chris

You are describing exactly what I had. And it was the fulcrum plates.

Regards Phil

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Re: Clunk from the back end

Post by Chris » Tue Sep 17, 2019 8:28 pm

Thanks Phil. Haven't investigated yet but was that a trans-out job?
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Re: Clunk from the back end

Post by richandsue » Wed Sep 18, 2019 9:10 pm

Are the spring plate bolts all tight.

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Re: Clunk from the back end

Post by Chris » Wed Sep 18, 2019 9:15 pm

Yes; all obvious bolts checked.

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Re: Clunk from the back end

Post by BJ1 » Mon Sep 23, 2019 4:47 pm

Chris wrote:
Tue Sep 17, 2019 8:28 pm
Thanks Phil. Haven't investigated yet but was that a trans-out job?
It is I'm afraid - pull the motor then the trans. Takes a full day with help from one other.
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