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Rear Cross Member Question
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JackNorris
 


Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Tonga GreenDiscovery 3
Rear Cross Member Question

Hello

I was switching tow bars earlier and noticed that the rear cross member, particularly the side of the spare wheel is very rusty. I managed to get the screw driver through.

The other side, with the sockets and tow eye is solid.

Am I right in thinking the rear is just a thin patch piece?

Thanks
 MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD 
 
Post #215749029th Jun 2020 9:44 pm
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Harry365
 


Member Since: 25 Aug 2018
Location: Lincoln
Posts: 373

United Kingdom 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

Which cross member are you talking about? Your reference points are in the middle. Do you mean the rear most cross member vs the one in from of the spare wheel, which the diff lives in?

Any pics? Or point to where the rust is using my pic.


  
Post #21582862nd Jul 2020 7:08 pm
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JackNorris
 


Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Tonga GreenDiscovery 3

Hi

Its the rear cross member, right between the holes for the tow electrics. Ive drawn on your pic Thumbs Up

Im finding now a lot of the older ones have rust on the very rear of the rear cross member. The metal seems very thin.




EDIT: I should add that the metal in the cutout for the tow sockets is solid.
 MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD 
 
Post #21582962nd Jul 2020 8:06 pm
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Harry365
 


Member Since: 25 Aug 2018
Location: Lincoln
Posts: 373

United Kingdom 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

Ah yeh I see. Sorry your first post makes sense to me know. It is thin there. I was lucky, no rust at all, dunno why not but won't complain.

The rear bumper isn't too bad to take off. Might be worth trying to prevent it getting any worse but I wouldn't poke it any more.

When I did my entire chassis, wire brush back to metal, I used and got on very well with Bilt Hamber hydrate 80. 2 coats with a nights rest in between and then 90% zinc primer finishing with Dinitrol 4941.

Failing that, replace it.
  
Post #21582982nd Jul 2020 8:20 pm
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JackNorris
 


Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Tonga GreenDiscovery 3

thanks Thumbs Up

Shall give it a clean up and a paint. My first thought was that it cant be too important as its so thin around there.

A friends has the same issue but further along the member.
 MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD 
 
Post #21583022nd Jul 2020 8:27 pm
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Harry365
 


Member Since: 25 Aug 2018
Location: Lincoln
Posts: 373

United Kingdom 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

Well it's all part of it but if you've got a full tow bar like a tow trust one you should be alright regardless.

I'm no steel expert though and I can't remember how that member is constructed now. I'm sure that's the thinnest side of the 4.
  
Post #21583032nd Jul 2020 8:33 pm
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JackNorris
 


Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877

United Kingdom 2005 Discovery 3 4.4 V8 HSE Auto Tonga GreenDiscovery 3

Im guessing there is another piece running down the middle too which is used for the tow bar to mount too? and is what the sockets are mounted on.

Yes I have a fixed bar Thumbs Up
 MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD 
 
Post #21583042nd Jul 2020 8:36 pm
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