[ROVERNET - UK] Drive shaft vibration

[John Atkin]

I had the same problems with my 100, it was cured by fitting a new prop
shaft centre bearing
best wishes
John Atkin
----- Original Message ----- 
From: "Barry Riseley" <barry-riseley at trump.net.au>
To: <rovernet at lyris.ccdata.com>
Sent: Saturday, June 19, 2004 1:58 AM
Subject: Re: [ROVERNET - UK] Drive shaft vibration


> Hello David and the group,
>
> I had real problems with my P4 105S in the matter of tailshaft vibration.
> I follow the exact procedures in the official workshop manual for
tailshaft
> assembly and "alinement"
>
> While that improved matters slightly I still had a vibration at around , I
> think 35 to 45 mph.
>
> I ended up taking the car the  a "Hardie Spicer" Service Centre for
> tailshaft balancing.
>
> This cost me somewhere in the region of $ 100 Australian.
>
> That expenditure removed all vibration, and goes down in my memory as the
> most significant single repair improvement I have ever made to a motor car
> in my life.
>
> >From memory, I think one of the traps for the uninitiated in the assembly
> of a Rover P4 tailshaft is that the original factory balance marks
> following a different practice to that utilised more commonly (in OZ
anyway).
>
> That is to say that balance marks on the front tailshaft are place 180
> degrees away from the balance marks on the rear tailshaft.
>
> The idea is that say the front tailshaft is 10 Oz heavy at the marked
point
> and the rear shaft is 9 Oz heavy at its marked point then the 180 degrees
> arrangement cancels out the total out of balance to be 1 Oz. I know that
> the figures I have given are not "real" but serve to give the principle.
>
> The standard practice elsewhere in other cars is for all balance marks to
> be simply lined up.
>
> The resulting confusion, to other than Rover Mechanics (an where do you
> find them nowadays) means that re assembly on Rover shafts is often made,
> in error, such that the Out of balances add rather than cancel.
>
>
> But, I still say that a competent balancer will be able to fix the whole
> drive line.
>
> Hope the above is of some value
>
>
> Barry R
>
> Tasmania
>
>
> At 04:31 PM 18/06/04 -0700, you wrote:
> >Rovernetters
> >
> >A few months ago there was an address on this net for
> >a paper on vibration diagnosis which I printed.   My
> >car has a vibration and today I took off the back
> >wheels and drums and ran up to the vibration speed as
> >was suggested.   There was enough vibration to shake
> >the steering wheel.   Can any netters suggest how I
> >can check the angles of the u-joints without an
> >inclinometer?
> >
> >All suggestions will be welcome.  Thank you an
> >advance.
> >
> >David Gatrell
> >1965 P-5 MkIIc
> >
> >
> >
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