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Harsh ride after rear swingarm change
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The Wild Rover
 


Member Since: 07 Apr 2012
Location: Germany
Posts: 36

Harsh ride after rear swingarm change

Hi all,

I'm trying to pick your brains today, because I've seen to hit a dead end with this problem. I'm based in Germany and have a 2006 D3 that I've owned for nearly 13 years and driven about 120.000 miles so far. The car has always been super comfortable. Last year my indie replaced both upper rear swingarms. First the right, then the left. Whereas I didn't notice any difference in comfort after the right arm was replaced, after replacing the left the car seems to be much firmer/harsher and also seems to sit higher at normal driving height.

Unfortunately my old garage closed down in the meantime and since it is really hard to find independent LR specialists in Germany I had to go to an official dealer with the problem.

Two different LR garages couldn't find a fault, however they also changed the front lower swingarms und steering rods and did a proper four wheel alignment and also calibrated the ride height.

Overall the car drives well but it still feels stiffer than before. Any idea what could cause this? I'd really appreciate some help since I want my magic carpet ride back Smile

Cheers, Ralph
  
Post #236985728th May 2024 12:06 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6267

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

What arms where fitted to the rear in the first place, they might have used arms with poly bushes, if so these are noted for a harsh ride.

Flack Thumbs Up
  
Post #236986428th May 2024 1:00 pm
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defector
 


Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1435

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Noticed one mechanic who changed arms on a RR Sport, tightened the arms nuts and bolts whilst it was up in the air on a two poster ramp, when they should be tightened with weight on the wheels and arms at normal road height.
Mentioned to him that the bushes would be wrecked in no time, but he knew better.
I think as the bushes in the arm are in tension when back on the road this may give a harsh ride.
  
Post #236986928th May 2024 2:12 pm
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The Wild Rover
 


Member Since: 07 Apr 2012
Location: Germany
Posts: 36


@ Flack
Thanks for your quick reply. I just checked the invoice and it seems as if they used the genuine LR arms, so I don't think that's the issue.

@defector
Thanks for the tip! That might well be the problem. I just checked the video on rear swingarm change on YouTube and it seems quite an ordeal, especially on the left side where you have very little access to the bolts because of the compressor cover. They might have taken a shortcut there. Would the fact that the bushings are under preload also explain the slightly too high ride height?

I will definitely look into that!

Will keep you posted. Cheers again.

Ralph
  
Post #236988228th May 2024 4:13 pm
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Tim.S
 


Member Since: 30 Mar 2024
Location: Bristol
Posts: 10

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Zambezi SilverDiscovery 3

Interesting. Ive had mine for 3 months now and always thought the ride was a bit harsh. My first LR though so ive got nothing to compare it too. Soaks up the big hits no problem but I can feel every every pot hole in the road, so much so that the dash rattles!

Looks like ive got fairly new arms on the back so I could have the same problem. I was planning to do a few bits on it this weekend so ill try slackening the bolts off and see what happens.
  
Post #23706857th Jun 2024 8:16 pm
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defector
 


Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1435

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Be careful, by loosening the bolts, you will possibly lose alignment so may need to get it aligned again on a 4 wheel aligner.
  
Post #23706978th Jun 2024 1:55 am
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