View Full Version : Suspension Airline and fittings
rdenyer
24th January 2022, 06:28 AM
Hello Fellow Discovery owners,
after many years of escaping undiagnosable air suspension issues I have find been struck with the following 
 C1A20-64 (AF) Pressure increases too slow when filling reservoir Algorithm based failure - signal plausibility failure
I have replaced the compressor, and have on order a new relay.
Now about to start on replacing o rings in valve blocks
but 
before I start, I fell it may be handy to have some air pipe and fittings on hand.
Can anyone recommend a good online supplier of them ?
photo for refrence176509
Thanks,
Richard
loanrangie
24th January 2022, 08:00 AM
You probably jumped the gun buying a new compressor and you most likely won't need any hose or fittings, are you replacing like for like ?
rdenyer
24th January 2022, 08:27 AM
You probably jumped the gun buying a new compressor and you most likely won't need any hose or fittings, are you replacing like for like ?
I already had the compressor.
It is the original that I had reconditioned with a full kit from 4x4 Airseals.
The one that was in there was an el’cheapo one from eBay, which I installed 12 months ago when I first got this message. 
everything has been ok, but when I did the rebuild on the original, there was a heap of dust, from the decayed drying crystals on the wrong side of the filter.
I think that I now need to clean and replace seals in all three control blocks, and want to make sure I have all parts for an eventuality.  
Also need to check all the struts for leaks.
if I don’t use the air fittings they go into the spares bucket.
Regards,
Richard
loanrangie
24th January 2022, 10:33 AM
There is a recent post about hose and fittings which a search should bring up.
101RRS
24th January 2022, 10:33 AM
Just clean the main block out - seals will probably be OK.  Also when you rebuilt your compressor did you instal an aluminium cap as the originals develop small cracks between the hose outlets and this will cause the fault code you have.  Also the relay is the same as the one that sits next to it in the under bonnet fuse box - so to test just swap them around.
Garry
Bulletman
24th January 2022, 10:59 AM
Airline is 6mm and I have used both plastic and metal joiners. Enzed, pirtek etc should have it in stock.
Bulletman
rdenyer
24th January 2022, 01:34 PM
Just clean the main block out - seals will probably be OK.  Also when you rebuilt your compressor did you instal an aluminium cap as the originals develop small cracks between the hose outlets and this will cause the fault code you have.  Also the relay is the same as the one that sits next to it in the under bonnet fuse box - so to test just swap them around.
Garry
Yes definitely did the whole job, cap, piston, exhaust valve, delivery valve , gave the motor a clean.
sounded wonderful running on the bench.
thanks for the relay tip.
Regards,
Richard
Gravy
27th January 2022, 08:26 AM
Hello Fellow Discovery owners,
after many years of escaping undiagnosable air suspension issues I have find been struck with the following 
 C1A20-64 (AF) Pressure increases too slow when filling reservoir Algorithm based failure - signal plausibility failure
I have replaced the compressor, and have on order a new relay.
Now about to start on replacing o rings in valve blocks
but 
before I start, I fell it may be handy to have some air pipe and fittings on hand.
Can anyone recommend a good online supplier of them ?
photo for refrence176509
Thanks,
Richard
If you Google "Tubefit" you will find component replacements.
rdenyer
30th January 2022, 10:19 AM
So cleaned up the garage enough to work on the D3 
On stands - removed wheels 
Found this  
Sprayed with soapy water, but no bubbles  and rear end was not sitting down at all, if anything the front was sitting very low.
Any idea what would have done this ?
have not been off-road and was not there 5K ago when I did the last service  as I checked all brake pads and would have seen this.
176698
Regards,
Richard
101RRS
30th January 2022, 01:50 PM
file:///C:/Users/richard/Documents/OneDrive/Pictures/Discovery%203/IMG_5497.jpg
Regards,
Richard
Your pics do not work - the method you used is for pics that are online not from your own c drive.
When making your post and you want to put in pics from your PC scroll down to manage attachments and then up load your pic in there .
There is a thread somewhere about how to post pics but I cannot find it.  You would think it would be under "Forum Rules and Guidelines" but I dont see it there.
rdenyer
30th January 2022, 06:53 PM
Apologies 
have updated 
regards,
Richard
Eric SDV6SE
30th January 2022, 10:29 PM
Wow, it looks as though the bottom clip the holds the airbag onto the strud had rotated, check that one if the sway bar links hasn't popped and is rubbing on the strut.  Otherwise check the top of the strut that doubles as the air bag housing has not spun on its seat.
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