As title said, my 2004 accumulated 70,000 miles. Suspension fault warning lights shown up once or twice a year in the last three years. I was not able to find leaks with soap bubble test and or height test. All test events were done in warm weather. I replaced the air compressor ring a week ago.Weather in Nashville, TN is in the 20sF since last week and Jag's suspension dropped to the floor. I finally found a leak which was the front passenger side shock by using bubble test. I am guessing that the extreme cold weather had harden the rubber part on older shocks and caused leak only in extreme cold weather.

Anticipating of suspension problems, I already purchased a complete set of used air suspension, compressor replacement ring, T60 socket , etc.

Arnott Youtube instruction was very helpful. However, impact wrench with T60 impact socket and penetration oil are the must have to loosen bottom T60 bolt. It's impossible to loosen this bolt without impact wrench since red loctite was used. I was not going to use heat to loosen bolt since it will melt the bottom rubber mount. In addition, I recommend to remove the 10mm bolt and mount that anchored the brake line to the inner wheel fender; it provided more wiggle room without the risk of breaking the brake line. It took a while with impact wrench running before the bolt was loose.

It would take me less than an hour to remove and install one shock but I did not have any red loctite in hand and had to to run to auto part. The remaining nuts and bolts used blue loctite.

It 5F last light and the suspension system did not drop since replacement. I am crossing my fingers.

 

Well done!

 

I replaced all mine with new Arnott sports struts last year, I was sick of the unreliability in the cold winter months. With the big freeze in Ohio the suspension has not dropped an inch. Plus I now have lifetime warranty on the Air struts.

 

I don't like Loctite.

My Healey has nyloc nuts and castle nuts with split pins.

Now they are high technology!

 

Maybe many years from now, I will replace air system them with S-type shock since they are abundant and super cheap at junkyard.