Dear Forum,

I am trying to help a Forum Member here in Dubai with his 2004 XJ6.

He has replaced the piston seal in his Suspension Air Compressor, but the new seal has very quickly become scored and the compressor is causing C2302 & C2303 . Must be damage to the cylinder in the head? It is proving far too costly to source a replacement compressor here, so has anyone had experience of trying this, please:

https://www.ebay.co.uk/itm/Air-Suspe...0AAOSwy2tdXk2v

 

Hello EsRay,

1st, try to look here: https://parts.jaguarlandroverclassic.../brand/jaguar/

Then, tell your member check n' listen to the electronic control module work process, (it should stop the compressor from compress
after ~2min, to prevent it from heat)...

Last... check out also here: https://jec.org.uk/forums/viewtopic.php?t=12640 and along similar/previous issues in this X350 forum.

 

This is a pic of the cylinder on the 2004 Jaguar XJ6 belonging to a guy here in Dubai whom I am trying to help. I sent him the link to Bagpiping Andy's website, but (bless him) he decided to buy a new seal kit elsewhere more cheaply!

I sent the pic to Andy and he thinks it probable that incorrect material was used for the cheaper seal and that is what has caused those heavy abrasions at the top of the cylinder head?

So now ‘more cheaply’ means a replacement compressor (far too expensive here) or a replacement cylinder head?

Don B has advised me that Andy now sells affordable replacement Air Suspension Compressor Cylinder Head kits, and that is the route I have recommended to our fellow Forum Member. https://www.bagpipingandy.com/



This damage was not present before he changed to the cheaper piston seal!

 

Slide the cylinder off and look at the piston for scoring also. The cheap deal may have have contributed to damage on both parts.
I rebuilt the original pump in my XJR twice. Both times it was marginal improvement. I think either the bleeder or reed valve was leaking. A new pump fixed my problem.
Ended up good at dropping the compressor.

 

Shipping really that much?

Ebay has great used stuff with shipping included here.

Were asking $175, with free shipping, offered $100.

It was at my door two or three days later, looks almost like new.

Put in a new piston ring, but the one in it was in good shape.

 

Ray,

We've already discussed this via PM, but for readers of this thread, anytime you open up the compressor to replace the seal, it's a good idea to disassemble the air dryer to clean out all corrosion, especially from the leaf valve, and to remove the exhaust valve and clean it as well. It's also not a bad idea to remove the pressure relief valve and clean it too.

I replaced the molecular sieve desiccant beads in the air dryer on our own X350, but on the compressors I've rebuilt for others I've just been baking the beads at 500F for a few hours. It doesn't fully reactivate them (that requires baking at 500F for 24 hours, alternating between deep vacuum and a nitrogen atmosphere), but it's better than just relying on the air suspension's own backflow function, which probably does very little to reactivate the beads.

Cheers,

Don