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Kent_keith



Member Since: 01 Jun 2014
Location: Kent
Posts: 388

England 2005 Defender 90 Td5 CSW Zambezi Silver
Vibration at 50 mph
My rear UJ was replaced due to wear by a Local Land Rover garage 2 weeks ago and straight away I felt a slight vibration at around 50 mph in 5th when going up a slight gradient, cured by putting my foot down a bit, but driving it yesterday it's getting worse, any ideas chaps? Thanks
Just to add its done 50,000 miles 2005 TD5 90 CSW XS
Post #403226 1st Mar 2015 7:16am
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
Most probably not balanced

But if you have lifted or lowered or changed wheel/ tyre size dramatically can be a factor
Post #403230 1st Mar 2015 7:50am
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Kent_keith



Member Since: 01 Jun 2014
Location: Kent
Posts: 388

England 2005 Defender 90 Td5 CSW Zambezi Silver
I've not/had anything changed but the UJ, silly question then, does the UJ need balancing after fitting? 2005 TD5 90 CSW XS
Post #403237 1st Mar 2015 8:00am
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
I'm not sure, I bought a new front and rear prop for my tdi and just fitted with no need to balance.

I lowered by 110 tdci and experienced front prop shake at 100kmh, removed -2" rear springs and put on std and went away.

the suspension geometry is carefully thought out on the defender.

another possibility is the steering damper ...
Post #403256 1st Mar 2015 9:01am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Kent_keith wrote:
I've not/had anything changed but the UJ, silly question then, does the UJ need balancing after fitting?



my back uj had failed rear prop off and had new uj fitted re-fitted prop drive away Thumbs Up
Post #403259 1st Mar 2015 9:07am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

England 
maybe the yokes are not aligned as they should be ?

and to be honest its easy to make a cock up when fitting a uj and end up with a tight bearing on one post Whistle

worth getting both checked
Post #403263 1st Mar 2015 9:14am
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Kent_keith



Member Since: 01 Jun 2014
Location: Kent
Posts: 388

England 2005 Defender 90 Td5 CSW Zambezi Silver
Thing is, I paid a garage to replace it so I expected them to know what they were doing, I plan to take it back next week I suppose I'll find out then Thumbs Up 2005 TD5 90 CSW XS
Post #403308 1st Mar 2015 12:04pm
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calum



Member Since: 05 Dec 2014
Location: Aberdeen
Posts: 46

United Kingdom 2004 Defender 90 Td5 SW Zambezi Silver
Could be loose bolts or something not right with the job done when replacing the UJ. Make sure they use new nyloc nuts.

Cheers

Calum
Post #403524 1st Mar 2015 10:29pm
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Kent_keith



Member Since: 01 Jun 2014
Location: Kent
Posts: 388

England 2005 Defender 90 Td5 CSW Zambezi Silver
Thanks Calum, I'll ask the question when it goes back sometime this week 2005 TD5 90 CSW XS
Post #403553 2nd Mar 2015 6:43am
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austinhealey55



Member Since: 09 Sep 2013
Location: Lusaka, Zambia
Posts: 24

2003 Defender 110 Td5 HT Chawton White
(edited to correct)

The front UJ's should be installed out of phase, meaning the yokes don't line up. IIRC it's about 45 degrees out of phase in the front, but if you google it you'll find it I'm sure. I think in general UJs are usually aligned in-phase (yokes match) on many cars/trucks, so especially if you have more vibration after it's likely they are out. I did mine a while back and had to spend some time getting the phasing correct.


Last edited by austinhealey55 on 8th Mar 2015 12:20pm. Edited 1 time in total
Post #405360 7th Mar 2015 6:04pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2520

Scotland 
Rears should be in phase, i.e. lined up. Fronts should be slightly out of phase.

The difference is due to the angle of the front diff nose being slightly upward toward the transfer box, whereas the rear axle has its diff nose on a parallel plane to that of the transfer box. On the rear the angles are opposite and equal, and so the oscillations in rotational speed inherent to UJs are evened out, on the front the difference in angle means that the phasing is set to smooth out the oscillation as much as possible.

The amplitude of the oscillations is proportional to the angle of the UJ joint, which is why when you lift a Defender too high it starts vibrating.
Post #405577 8th Mar 2015 11:51am
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austinhealey55



Member Since: 09 Sep 2013
Location: Lusaka, Zambia
Posts: 24

2003 Defender 110 Td5 HT Chawton White
Thanks for the correction. It has been two years since I did mine and went out to look at my 110 this morning to remember which was which.
Post #405583 8th Mar 2015 12:17pm
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Freypal



Member Since: 23 Sep 2013
Location: Shropshire
Posts: 271

United Kingdom 1992 Defender 90 200 Tdi HT Portofino Red
Proposhafts have balancing weights on them also. I'd check this hasn't been knocked off.

Managed to do so on my own 90.
Post #405613 8th Mar 2015 2:04pm
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Kent_keith



Member Since: 01 Jun 2014
Location: Kent
Posts: 388

England 2005 Defender 90 Td5 CSW Zambezi Silver
Thanks chaps for your help, I took it back to the garage and he said there's nothing wrong with it? Now I have to take it to someone else to see if this is the cause or not. Evil or Very Mad I do wish I knew more about defenders. 2005 TD5 90 CSW XS
Post #405941 9th Mar 2015 12:00pm
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