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From: marpate1 on 30 May 2010 13:45
On May 30, 6:40 pm, marpate1 <marpa...(a)yahoo.co.uk> wrote:
> On May 30, 5:58 pm, "Duncan Wood" <nntpn...(a)dmx512.co.uk> wrote:
>
>
>
> > On Sun, 30 May 2010 17:33:50 +0100, marpate1 <marpa...(a)yahoo.co.uk> wrote:
> > > Hi all,
>
> > > Wonder if you could offer me a little advice?
>
> > > My 306 estate (1.9TD 1997) has a violent shake at around 40-50mph. To
> > > try and fix it, I have had all wheels balanced and have just changed
> > > both front wishbones as the rear bushes were worn - this has made
> > > little difference.
>
> > > I did notice when on axle stands, in 5th at tickover that the near
> > > side tyre seems to shimmy side to side. There's no play at all in the
> > > bearings or ball joints and the spare does the same. Any ideas why
> > > this could be and whether this is likely to be the cause of the shake?
>
> > > And advice gratefully received!
>
> > > Kind regards,
> > > Mark
>
> > If it's actually shimmying then there's run out in the hub, but normally  
> > it's just an optical illusion from the tyre pattern, It's more likely to  
> > be a driveshaft .
>
> You could well be right that it's an optical illusion. I'm tempted to
> get a dial gauge to check anyway (unless there's a method to do this
> without one).
>
> Cheers,
> Mark

Thinking about it, could I have runout on the hub and not feel
vibration when braking?

Cheers,
Mark
From: Eccles on 30 May 2010 16:18
marpate1 <marpate1(a)yahoo.co.uk> wrote:

> Thinking about it, could I have runout on the hub and not feel
> vibration when braking?

I had vibration on braking, but not on acceleration (also on a 306 1.9TD).
After changing discs twice I eventually discovered a small burr on the edge
of the hub flange, which I think was probably caused by a local garage
weilding a hammer when renewing the wheel bearings. A second or two with an
angle grinder completely cured the problem.

It might be worth examining your hubs for anything similar.

Peter


From: marpate1 on 30 May 2010 17:24
On May 30, 9:18 pm, "Eccles" <peter(a)peter> wrote:
> marpate1 <marpa...(a)yahoo.co.uk> wrote:
> > Thinking about it, could I have runout on the hub and not feel
> > vibration when braking?
>
> I had vibration on braking, but not on acceleration (also on a 306 1.9TD)..
> After changing discs twice I eventually discovered a small burr on the edge
> of the hub flange, which I think was probably caused by a local garage
> weilding a hammer when renewing the wheel bearings.  A second or two with an
> angle grinder completely cured the problem.
>
> It might be worth examining your hubs for anything similar.
>
> Peter

Thanks Peter, good idea. I've not done anything on the discs/hubs for
a while so whilst it's unlikely to be this, I am tempted to strip
everything down and see what is what.
Cheers,
Mark
From: Duncan Wood on 30 May 2010 19:06
On Sun, 30 May 2010 18:40:36 +0100, marpate1 <marpate1(a)yahoo.co.uk> wrote:

> On May 30, 5:58 pm, "Duncan Wood" <nntpn...(a)dmx512.co.uk> wrote:
>> On Sun, 30 May 2010 17:33:50 +0100, marpate1 <marpa...(a)yahoo.co.uk>
>> wrote:
>> > Hi all,
>>
>> > Wonder if you could offer me a little advice?
>>
>> > My 306 estate (1.9TD 1997) has a violent shake at around 40-50mph. To
>> > try and fix it, I have had all wheels balanced and have just changed
>> > both front wishbones as the rear bushes were worn - this has made
>> > little difference.
>>
>> > I did notice when on axle stands, in 5th at tickover that the near
>> > side tyre seems to shimmy side to side. There's no play at all in the
>> > bearings or ball joints and the spare does the same. Any ideas why
>> > this could be and whether this is likely to be the cause of the shake?
>>
>> > And advice gratefully received!
>>
>> > Kind regards,
>> > Mark
>>
>> If it's actually shimmying then there's run out in the hub, but
>> normally it's just an optical illusion from the tyre pattern, It's more
>> likely to be a driveshaft .
>
> You could well be right that it's an optical illusion. I'm tempted to
> get a dial gauge to check anyway (unless there's a method to do this
> without one).
>
> Cheers,
> Mark

Well if you've not kerbed the wheels then you can see the gap between the
tip of a screwdriver held on an axle stand & the wheel rim, if it varies
then something's bent enough to need fixing, if you can't see anything
then a cheap dial guage & stand are the way to go, but if the spare wheel
is the same then it's the hub. & that's really unlikely, they do sometimes
bend/warp/develop burrs but some people win the lottery.
From: marpate1 on 31 May 2010 03:32
On May 31, 12:06 am, "Duncan Wood" <nntpn...(a)dmx512.co.uk> wrote:
> On Sun, 30 May 2010 18:40:36 +0100, marpate1 <marpa...(a)yahoo.co.uk> wrote:
> > On May 30, 5:58 pm, "Duncan Wood" <nntpn...(a)dmx512.co.uk> wrote:
> >> On Sun, 30 May 2010 17:33:50 +0100, marpate1 <marpa...(a)yahoo.co.uk>  
> >> wrote:
> >> > Hi all,
>
> >> > Wonder if you could offer me a little advice?
>
> >> > My 306 estate (1.9TD 1997) has a violent shake at around 40-50mph. To
> >> > try and fix it, I have had all wheels balanced and have just changed
> >> > both front wishbones as the rear bushes were worn - this has made
> >> > little difference.
>
> >> > I did notice when on axle stands, in 5th at tickover that the near
> >> > side tyre seems to shimmy side to side. There's no play at all in the
> >> > bearings or ball joints and the spare does the same. Any ideas why
> >> > this could be and whether this is likely to be the cause of the shake?
>
> >> > And advice gratefully received!
>
> >> > Kind regards,
> >> > Mark
>
> >> If it's actually shimmying then there's run out in the hub, but  
> >> normally it's just an optical illusion from the tyre pattern, It's more  
> >> likely to be a driveshaft .
>
> > You could well be right that it's an optical illusion. I'm tempted to
> > get a dial gauge to check anyway (unless there's a method to do this
> > without one).
>
> > Cheers,
> > Mark
>
> Well if you've not kerbed the wheels then you can see the gap between the  
> tip of a screwdriver held on an axle stand & the wheel rim, if it varies  
> then something's bent enough to need fixing, if you can't see anything  
> then a cheap dial guage & stand are the way to go, but if the spare wheel  
> is the same then it's the hub. & that's really unlikely, they do sometimes  
> bend/warp/develop burrs but some people win the lottery.

Thanks Duncan, why didn't I think of that!

So, I did as you suggested and there is minimal to no variation. I
took a closer look at the driveshafts and there's nothing noticeable
wrong, but both inner and outer CV gaiters are split and there seems
to be a little play in the joints, so perhaps I'll start here. It
doesn't seem to be a huge task to swap this out, once I can get the
outer CV nut off!

Cheers,
Mark
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