Quote Originally Posted by WhiteyAR View Post
Hi Andy, I finally got around to fitting the ring kit this afternoon I bought off you last summer!. I did it in situ on my allroad. Unfortunately the ring seems to be performing fine, but I now have a very loud vibration noise when the pump is running. Any ideas what I may have disturbed? I ran out of light to investigate this evening. Regards Andrew

Hi,

couple of things to check:

does the car lift through the levels ok?, if the ring is fitted incorrectly or upside down it will be noisy but it would not lift fast,

if it lifts ok,
check the compressor is still sitting on its springs, if touching the car body it will transfer the vibration through the body, same for cables and hoses they will transfer noise

is the mounting endplate still attached?

make sure the bolts holding on the cylinder are actually clamping the cylinder on and not jammed or bottomed out

best to look at it while it is running, it may be obvious when you can see it in the daylight, any questions just ask

best regards

Andy