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Air suspension issue exhaust valve
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3
Air suspension issue exhaust valve

Hi all

My disco 3 goes into suspension fault often but turning ignition off and on and all works normal again

I’ve taken it to local garage and it reads the following fault code

Easy fix? Garage isn’t a specialist but he thinks it loses the pressure to lower too quick
  
Post #203923322nd Mar 2019 3:03 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Can’t see the photo but it says C1A36 exhaust valve
  
Post #203923422nd Mar 2019 3:04 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Likely a sticking exh valve, assuming yours is still a Hitachi compressor you could opt to rebuild the compressor whilst sorting the exh valve (easy job)

Piston parts, dryer, filters, and other bits are available for peanuts. If its an AMK compressor there are some bits available too, but more tricky to repair the piston assy (not so easy) Desiccant, filters, etc cheap and available.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #203924522nd Mar 2019 3:30 pm
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Brucey
 


Member Since: 24 Oct 2015
Location: Bedfordshire
Posts: 137

2012 Discovery 4 3.0 SDV6 XS Auto Indus SilverDiscovery 4

I've just rebuilt my Hitachi compressor after my car wouldn't lower because of a fault. Partly to do with an iffy height sensor and then it ultimately needed a compressor rebuild. See the thread here https://disco3.co.uk/forum/suspension-prob...75698.html

I think my problem was that the beads had started to turned to dust and clogged the the filters limiting it's ability to exhaust air. I've got to say I was very impressed by the X8R kit.
  
Post #203928322nd Mar 2019 5:13 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Thanks guys

I’ve got it all jacked up so I’ll have a look later at what unit I have and then have a look for a rebuild kit

Will give me something to do this weekend
  
Post #203947323rd Mar 2019 8:34 am
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Which version is this?
  
Post #203956623rd Mar 2019 1:33 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

  
Post #203956723rd Mar 2019 1:34 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Ok don’t want to go much further but I’ve found no filters at all and can’t really strip it down any more??

Am I missing something?




  
Post #203958723rd Mar 2019 3:03 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Ok so you have an AMK and you should not need to dismantle any further except for the dryer.

The dryer containing the desiccant and filters is the black cylindrical unit! When reattaching to the head be sure the large black seal is sound, and there's no dirt or grit on the parts. Do not either scrape or sand the alloy mating surface as this has a anti corrosion coating. If you are doubtful about the large seal you can coat it in a very thin smear of silicone sealant to ensure a good seal.

The Hitachi filter kit and desiccant will fit the AMK with slight resizing of the filters IIIRC.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #203960223rd Mar 2019 3:48 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Ok thanks

Where can I get the silica type beads and any filter for that part?
  
Post #203960323rd Mar 2019 3:50 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

When you disassemble the dryer, clean thoroughly all parts and valve. I think this is the kit for AMK.
https://www.ebay.co.uk/itm/AMK-Air-Suspens...3247166306
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #203961023rd Mar 2019 4:08 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Bought the kit but to be honest I don’t think this has anything to do with my fault the filters are virtually brand new

The silica beads are slightly off coloured though? Not sure if that makes a difference
  
Post #203966923rd Mar 2019 7:32 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

The fault code says exhaust valve, where is this exhaust valve??
  
Post #203968223rd Mar 2019 8:01 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4580

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Fitted to the dryer!! You are only changing the desiccant and filters as you have the thing apart.
Clean and lubricate the valve and satisfy yourself it is working before reassembly.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #203969223rd Mar 2019 8:13 pm
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Russ6334
 


Member Since: 16 Mar 2019
Location: Plymouth
Posts: 27

2005 Discovery 3 TDV6 Base 7 Seat Manual Unknown ColourDiscovery 3

Are you able to point out the exhaust valve? I can’t find it unless it’s the small rubber valve under the strainer looking thing
  
Post #203969323rd Mar 2019 8:15 pm
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