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Am I right in thinking....
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MARKW
 


Member Since: 29 Aug 2008
Location: SW
Posts: 2390

United Kingdom 
Am I right in thinking....

When I park the D3 up at night I lower the suspension. My reasoning was it released pressure from the system and therefore decreased the stress on the compressor being fully charged. When I had a coal delivery yesterday the delivery bloke asked why the D3 sat so low and I explained my reasons and he then came back with the fact that the airbag is now deflated and will have ribs around it where the bag has deflated. And causing issues where the creases are.
Is there a right or wrong answer to this? Is it designed to be dflated everynight or did LR expect the suspension to be inflated all the time?
 HONI SOIT QUI MAL Y PENSE

They shall not grow old as those of us left grow old. Age shall not weary them, nor the years condem. At the going down of the sun, and in the morning WE WILL REMEMBER THEM 
 
Post #8805238th Jan 2012 11:04 am
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euangibson
 


Member Since: 24 Dec 2010
Location: Borders
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Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Don't know the answer tbh,but I have the optional extra where my car does it for me automatically every night Whistle ...I had a new compressor fitted 5 weeks ago (for other issues) and it still does it Rolling Eyes
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

Locking rear E-diff
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Post #8805248th Jan 2012 11:08 am
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devonchilliman
 


Member Since: 03 Nov 2008
Location: Devon
Posts: 5224

England 

Good question Thumbs Up ,Ive always locked my D3 & now the D4 in access mode overnight ,mainly a habit before I had a RLD spare wheel to stop my spare being nicked Thumbs Up
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Post #8805258th Jan 2012 11:10 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

euangibson wrote:
Don't know the answer tbh,but I have the optional extra where my car does it for me automatically every night Whistle


Mine does the same, though usually after 4 or 5 days to get to its bump stops. It's part of the fun and joy of running an old D3, you're just not quite sure what altitude it will be at when you go to use it. Whistle
  

Last edited by DSL on 8th Jan 2012 11:13 am. Edited 1 time in total 
Post #8805268th Jan 2012 11:11 am
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MARKW
 


Member Since: 29 Aug 2008
Location: SW
Posts: 2390

United Kingdom 

I always reverse til the tow bar hits, sorry gently caresses the low wall at the front of the house.

I'm now intrigued as to the correct(?) way to leave the D3 overnight or long periods.
 HONI SOIT QUI MAL Y PENSE

They shall not grow old as those of us left grow old. Age shall not weary them, nor the years condem. At the going down of the sun, and in the morning WE WILL REMEMBER THEM 
 
Post #8805278th Jan 2012 11:12 am
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SHARKYSHARKS
 


Member Since: 20 Dec 2008
Location: Saddleworth Oldham
Posts: 1954

England 

Mark I would say he is correct in his thinking I have a Scania Artic tractor unit which is on air and has a rear lift tag axle which works on the same principle so on the rear axle being raised the bellows are deflated,
and on this axle the bellows are replaced more often than the others Shocked
So putting this example along D3 / D4 terms only time will tell Rolling Eyes
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Post #8805318th Jan 2012 11:12 am
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MARKW
 


Member Since: 29 Aug 2008
Location: SW
Posts: 2390

United Kingdom 

OK. I like that answer. It could cost me money then, that's a good enough reason.

Plus point is after he delivered the coal we ended up chatting about all things and then it came out I was ex forces and so was his Bro in law. And as he walked away he said that if I ordered coal in future and wasn't around when it was delivered he just catch up with me at a later point for the money rather than cash on delivery. Which is good for me. Work is getting in the way a bit at the moment.
Off to Thetford today til Wed for some training.
 HONI SOIT QUI MAL Y PENSE

They shall not grow old as those of us left grow old. Age shall not weary them, nor the years condem. At the going down of the sun, and in the morning WE WILL REMEMBER THEM 
 
Post #8805328th Jan 2012 11:16 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

Mind you, with all the bits that go wrong on these cars, and the frequency of said things, air springs doesn't even spring to mind. Whistle Whistle Coud almost be thought of as a reliable part. Whistle
   
Post #8805338th Jan 2012 11:16 am
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BrianT
 


Member Since: 17 Nov 2009
Location: Ayrshire
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Scotland 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

DSL wrote:
Could almost be thought of as a reliable part. Whistle


Really Exclamation

Does that exist in LR speak. Rolling with laughter Rolling with laughter Rolling with laughter
 MY 16 Landmark Santorini Black
MY 05 SE Adriatic Blue (Gone but not forgotten)
 
 
Post #8805398th Jan 2012 11:25 am
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73066

Ukraine 

I was phrasing that very carefully. Remember the R in LR has nothing to do with reliability. Laughing Laughing

And for those sitting smugly with a D4, you will know what we are talking about, it's just a matter of when. Whistle Whistle
   
Post #8805418th Jan 2012 11:27 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
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England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

euangibson wrote:
Don't know the answer tbh,but I have the optional extra where my car does it for me automatically every night Whistle ...I had a new compressor fitted 5 weeks ago (for other issues) and it still does it Rolling Eyes

Could lowering every night be the reason your compressor failed?- by having to inflate the system every day.
Having said that I have lowered mine for the last five years with no problems(touching wood).
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #8805498th Jan 2012 11:47 am
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euangibson
 


Member Since: 24 Dec 2010
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Scotland 2012 Discovery 4 3.0 SDV6 HSE Auto Firenze RedDiscovery 4

Could be.....I had loads of other suspension problems that a new compressor seems to have fixed,touch wood...but I will be getting a few other things checked next time its in......was hoping the new compressor would cure all the issues .... Big Cry
 "Better to remain silent and be thought a fool,than to speak out and remove all doubt" ?.....what rubbish...

Locking rear E-diff
RLD spare wheel protector & sump guard
Extended roof rails
Series 111 mudflaps
Black side tubes,grill and vents
Timed climate remote
Hids4u interior lights

D4 Firenze my2012 HSE
D3 Java 2005 SE manual (sold,sadly,thanks for the memories)
1966 '88 Series 2a....still starts in the morning better than I do... 
 
Post #8805518th Jan 2012 11:53 am
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
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Wales 

MARKW wrote:
OK. I like that answer. It could cost me money then, that's a good enough reason.


I don't think you will find this to be an issue in the lifetime of the vehicle tbh ...while there are cases of punctured bags from foreign objects, I've never seen or heard of them replaced for the reasons set out here. If you look at the bag when the are in access height they crease at predetermined points where the thickness of the bag is at least double that of the rest of it and they are certainly not under and stress at these crease points. Also bear in mind that the bags operate at a relatively low pressure and are materially designed to cope with pressures five or six times the standard operating parameters.

I always put mine into access height mainly because I'm a short Censored ....if you want to leave it in any height then that will be fine again for the reasons of it being a low pressure system ....the stresses on components are minimal. Thumbs Up
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #8805538th Jan 2012 11:57 am
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MARKW
 


Member Since: 29 Aug 2008
Location: SW
Posts: 2390

United Kingdom 

Cheers DG Thumbs Up Thumbs Up
 HONI SOIT QUI MAL Y PENSE

They shall not grow old as those of us left grow old. Age shall not weary them, nor the years condem. At the going down of the sun, and in the morning WE WILL REMEMBER THEM 
 
Post #8805548th Jan 2012 12:00 pm
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Gareth
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Member Since: 07 Dec 2004
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By leaving it in access height, the compressor has to work to re inflate the system next time you start, therefore it must be increasing the wear on it. If you leave at normal height, there is no 'stress' on any component as the whole system is locked off. The only items with pressurized air would be downstream of the compressor valves. These would be the air tank (long sausage shaped thing under left hand floor) each airbag, and the pipework along with the crossover valves. All designed to live life under pressure. If the suspension is dropping by itself, it means there is a leak downstream of the compressor valves.

The airbags are contained within alloy tubes, and roll inside themselves when deflated. There are no crease points at all. The rear air units have some cheap and nasty rubber covers that sometimes look all creased up. These are of no significance whatsoever, and just keep dirt out.
  
Post #8805738th Jan 2012 12:39 pm
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