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How likely is it that an AMK compressor goes wrong?
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3
How likely is it that an AMK compressor goes wrong?

Got the yellow light, turns into red sometimes and dissepearts after short time again.
Special programs are not working either.

Can't hear it working when i start up the car.

Fuses are okay. Disconnect the battery (30min) didn't help either.

Then checked which type of compressor was mounted, the AMK one. 3 years old, replaced by previous owner.

Next dealer is far away so can't check codes just like that.

Do these go wrong? They are not repairable, right?
  
Post #190772329th Jan 2018 7:58 am
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TC179
 


Member Since: 19 Aug 2014
Location: uk
Posts: 145

England 

It might be worth checking for leaks elsewhere on the system first. Likely culprits being front or rear levelling blocks or the reservoir. Spray some soapy water on hose junctions.
  
Post #190772629th Jan 2018 8:23 am
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TC179
 


Member Since: 19 Aug 2014
Location: uk
Posts: 145

England 

Sorry just read that again. If you can’t hear it working, get a meter on it to see if it’s getting power
  
Post #190772729th Jan 2018 8:25 am
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

I'll do that. If there is a leak somewhere i guess it is between compressor and tank, the car is perfectly leveled since wednesday and 200miles driving.

I'll borrow a box "leak detector" from work. 😁


------


edit: that's my plan for tonight. I won't accept a broken AMK compressor after just 3 years. Smile
  
Post #190772829th Jan 2018 8:26 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6224

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

I have had a couple of AMk compressors fail that where new, but not supplied by LR, I got mine replced without any hassle.
There seems to be a problme on AMK units with the exhuast valve sticking, I have done quite a few that have stuck. I have done my own car twice now for the same fault.

Its an easy fix, just remove the small air pipe from the exhaust chamber and twist off the cap, pull the valve out ( if you can I have had to remove the pump on some cars ) and clean it and grease with silcone grease and replace.

Flack
 

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21st Jan 2018




 
 

Last edited by Flack on 29th Jan 2018 10:58 am. Edited 1 time in total 
Post #190776629th Jan 2018 9:53 am
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G_Cam
 


Member Since: 12 Aug 2010
Location: Fife
Posts: 2048

Scotland 2013 Discovery 3 3.0 TDV6 Commercial XS Auto Fuji WhiteDiscovery 3

If the light goes out and you do not end up on the bump stops the compressor probably IS working.
It may not start up when you start the car as there is sufficient air in the air bags or reservoir.

After a soapy (car shampoo + water) spray bottle test..
I would check for a leaking air tank - usually these rust on the TOP .. so it is not easy to see.
Then the valve block - you might need to remove and rebuild if they have white reside in them from the drier dessicant breaking down. The valve blocks can leak internally so you may not see or hear the air escaping.

Hope this helps
 1 TR6 Rusting away quietly
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1 continual stream of car parts and me living in the garage... 
 
Post #190776929th Jan 2018 9:59 am
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

Thank you so much for all the helpfull replies! This is propablya never ending story in this forum, still i get nice and helpful answers. Smile

I will keep you updated and take pictures too. Smile

I will remove the compressor today and take it with me to work tomorrow, all my good tools are there. Smile

edit: the car will drop if i remove the valve block, right?
  
Post #190785429th Jan 2018 2:01 pm
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

Removed the compressor now. The valve doesn't seem to be stuck, but i will clean it and lube it tomorrow at work.
The tank is very rusty, will take it off tomorrow and look for leaks/rust holes. Then if needed i'll weld it and put it into place again.

Haven't measured any wires yet, just forgot it again. Rolling Eyes

There was only pressure in the small fitting, not on the big one.
  
Post #190798329th Jan 2018 7:18 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

If the compressor is still off it is worth checking the desiccant in the drier unit - the little balls could shot

This was the condition of the desiccant in my last one -
 Must stop buying shiny toys....  
Post #190799029th Jan 2018 7:27 pm
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

I'll check them! Thanks Smile
  
Post #190799129th Jan 2018 7:28 pm
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

cleaned the valve and tested it, everything is fine.
tonight i'll disassemble the tank. If i can't see any damage there i will try to read fault codes somewhere... No more guessing Smile













  
Post #190821130th Jan 2018 10:20 am
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

And these Smile


  
Post #190821530th Jan 2018 10:27 am
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Out of interest, have you replaced the drier balls, eBay or Amazon are both cheap sources.
 Must stop buying shiny toys....  
Post #19095392nd Feb 2018 9:40 am
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torque1st
 


Member Since: 14 Dec 2017
Location: Norway
Posts: 97

Norway 2006 Discovery 3 TDV6 HSE Auto Barolo BlackDiscovery 3

Can't wait for these, i am going to dry them in the oven tonight.

There is no ebay in Norway Smile
  
Post #19095422nd Feb 2018 9:42 am
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

If it doesnt dry out well, any industrial packaging supplies company will sell you it - its the same stuff in the little sachets that come with every electrical item.

RS Components sell it in 100g bags that are around €2.50 each from memory
 Must stop buying shiny toys....  
Post #19095642nd Feb 2018 10:12 am
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