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How To - Air Suspension Compressor replacement
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

I removed my compressor this weekend and didnt see a wire with loops, do you have a picture of this?
  
Post #8677886th Dec 2011 7:01 pm
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thorgal
 


Member Since: 26 Nov 2008
Location: on the east side
Posts: 541

United States 2005 LR3 4.4 V8 HSE Auto Bonatti GreyLR3

I don,t really know how to upload pictures, but if you go to LRPARTS.RU( it is a Russian microcat , select English, go to Disco3, chassis , air suspension and lines, you will see it, a wire with two loops PN RQD500020, that is called strap-securing.
  
Post #8679837th Dec 2011 12:39 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

The wire was fitted as part of the A034/A036 Vehicle Enhancement program, to show the compressor had been re-worked, and new parts fitted.

Not needed, and nothing to worry about Thumbs Up
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Post #8682887th Dec 2011 7:47 pm
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

Disco_Mikey wrote:
The wire was fitted as part of the A034/A036 Vehicle Enhancement program


In that case I didnt have an enhancement, should I have had?
  
Post #8683037th Dec 2011 8:22 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Unless it has been replaced previously Smile
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Post #8683097th Dec 2011 8:37 pm
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thorgal
 


Member Since: 26 Nov 2008
Location: on the east side
Posts: 541

United States 2005 LR3 4.4 V8 HSE Auto Bonatti GreyLR3

Disco_Mikey wrote:
The wire was fitted as part of the A034/A036 Vehicle Enhancement program, to show the compressor had been re-worked, and new parts fitted.

Not needed, and nothing to worry about Thumbs Up


Thanks. that means, that I had mine redone in 2008 by someone. I wonder if they also updated the compressor software back than . I bought it used, off lease, so I would not know, if was updated or not...

Well, I just replaced O-rings and dryer.Silicon beads inside were wet and binder together at one and , so overall i am glad , that I replaced it. Thumbs Up
  
Post #86944211th Dec 2011 4:16 am
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jhaddock
 


Member Since: 08 Oct 2011
Location: Puerto Rico
Posts: 47

United States 2005 LR3 4.4 V8 SE Auto Chawton WhiteLR3

Hello there:
Have change compressor 18 months ago following disco_mikey's instructions (really appreciate your job). Bow down Since then everything is fine (no errors) and suspension is working superb. During the process I have take apart the old air dryer and open it to find that inside filters, desiccant material, springs, an all components were very deteriorated. Question is. Considering I live in the Caribbean where air moisture is relatively high all year around, should I consider changing the compressor dryer on a regular base?, considering its cost is only a fraction of a new air supply unit. Should this help prolonging the life of the new air supply unit? Any feedback will be appreciated. Thumbs Up
  
Post #108806014th Apr 2013 5:21 pm
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Discothree
 


Member Since: 19 Apr 2013
Location: België
Posts: 8

Belgium 2006 Discovery 3 TDV6 SE Auto Bonatti GreyDiscovery 3

Censored
  
Post #109046819th Apr 2013 7:34 am
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TdV6Pete
 


Member Since: 10 Aug 2012
Location: Rutland
Posts: 415

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Q86ARR wrote:
Don't forget to replace the relay (part no. YWB500220) and update the ECU (ref LTB00331 and LTB00270).


Where and why does the relay need replacing? And why do you need to update ECU? My compressor needs changing, and i was going to do it but i cant update ECU.

finally, whats the part number for a compressor and what would you expect to spend?

Thanks!
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Post #109639329th Apr 2013 8:56 pm
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leggyemulous
 


Member Since: 12 Apr 2011
Location: Oxfordshire
Posts: 5

2006 Discovery 3 TDV6 S Manual Unknown ColourDiscovery 3

This was a really handy thread. I've had the "Suspension fault, normal height only" warning coming up a few minutes after start up for a while now.

The main stealer was adamant that a new compressor was required.

I didn't believe them, so I purchased the 3 anchor nuts mentioned on the beginning of this thread and set about getting the compressor off. It's yet another crazy Land Rover design. Access to the top bolt of the mounting bracket is ridiculous (the top allen bolt holding the compressor to the bracket would be equally impossible to deal with in situ). Fortunately the old anchor nuts do disintegrate pretty swiftly! That one bolt still took me well over an hour though. There was no way I was getting a socket on it, despite using various drive sizes and extension lengths. There just wasn't enough room between the compressor and the top of the clam-shell cover. I had to (very) slowly remove it with a 10mm ring spanner.

Again as suggested here, the 8mm and 10mm pipe connectors were thoroughly seized in. I had to cut the pipes and used a couple of these connectors to rejoin them later. They're good up to 8 bar apparently - so far so good. I bought them direct, but I've discovered since that they are also on ebay if you search for "Push In Nylon Tube Hose Connector Joiner Air Line" Wink

Anyway, I removed the air dryer which I'd assumed to be the issue and dismantled it. As suspected, the silica was in a right state and the dryer was effectively blocked. I caught all of the silica, microwaved it to restore it, then sieved it to leave me with just the beads. Reassembled it all and fitted a new o-ring where it meets the compressor. Refitted the compressor assembly and low and behold, the issue has gone away. With that in mind, I wouldn't spend nearly £100 on a new dryer if you are regenerating the silica for the first time. It's a very simple job. Do it in batches in a thick pyrex dish for about 3 minutes at medium/high power.

Net cost to me, much less than £20 compared to nearly £1k that the stealer wanted for fitting a new (and unnecessary) compressor.

I couldn't have done it without these forums Thumbs Up
  
Post #118646112th Nov 2013 12:38 pm
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eljot
 


Member Since: 15 Nov 2013
Location: wasserburg am inn
Posts: 90

Germany 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

would like to do some maintenance on by compressor and would like to know if there is something to do on the suspension before taking of the pipes, etc. or just in normal "height-position", etc.?! Shocked

thx, martin
  
Post #118994619th Nov 2013 4:21 pm
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Chris1969
 


Member Since: 21 Jun 2011
Location: North Worcestershire (not far from Redditch)
Posts: 385

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Alveston RedDiscovery 3

Hiya Martin,

When I did mine I just disconnected the battery beforehand to make sure I didn't do anything to the electrics but other than that, nothing to do I am aware of .... and mine is fine since the re-build Thumbs Up

Chris.
  
Post #118995019th Nov 2013 4:36 pm
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eljot
 


Member Since: 15 Nov 2013
Location: wasserburg am inn
Posts: 90

Germany 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

wanted to do some maintenance on my compressor today! went everything fine so far, until i came to the f...g pipe connectors!! no chance at all!! one of the "ring" was falling off when i tried to press it! Shocked

put some wd40 on the rings and will try it the next days!!

are there any tips how i could get the connectors loose and can the stupid connectors be bought separately? Bow down

Click image to enlarge
  
Post #119197923rd Nov 2013 9:32 pm
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TuppyTrucker2
 


Member Since: 30 Dec 2013
Location: Basse Normandie
Posts: 16

France 2012 Discovery 4 3.0 TDV6 S Auto Fuji WhiteDiscovery 4

I've been having the EAS light come on quicker and quicker, so today I set about it.
I'd bought some captive nuts as mentioned here. More of this later.
So I take it all to bits, the top bolt is easy once you've found it. 10mm socket on a UJ and 14" of extension bars, took all of 20 seconds to get off but 5 minutes to find.
The push fit unions resisted slightly but a drop of PO and a tap with a screwdriver sorted them. Out came the compressor. Took it off the bracket to get the drier off, carefully eased off the bayonet type fitting, not strictly necessary, but it's the 1st time.
Opened up the drier, caught most of the silica. Some had solidified. Zapped it in the microwave, put it all back together. No fault light.
For about half an hour.
So I'll be getting a new batch of silica gel and cut some clean felt discs and a new O ring. Maybe a piston seal as well if available. See how that goes.
I still have the captive nuts. The old ones were perfect. Typical.
 LR: D4 3.0 auto, D3 2.7 auto, D1 2.5 auto, D1 2.5 man.
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Post #12300683rd Feb 2014 6:42 pm
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Beretta
 


Member Since: 11 Oct 2012
Location: Rochdale
Posts: 1180

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4
Luck?

Wish me luck I have tomorrow booked off work to replace mine. I planned to refurb it but on inspection some of the bolts on the unit are new, so would imply it's already been rebuilt / repaird so bitten the bullet and got a new one from TLO.
  
Post #12300923rd Feb 2014 7:16 pm
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