Hi All,

For those well experienced in A/C on the 240:

About three years ago I converted my system to r134. replaced expansion valve, receiver dryer, drained oil in compressor and replaced with ester oil, I also replaced the high pressure hose from condensor to compressor which was leaking. Anyhow the system ran fine for about two years. Last year the pressure dropped a bit, I topped it off, and also added an electric pusher fan, which helped performance in traffic.
This year the pressure is a bit low again, now doing the carpet I find that oil was leaking at the expansion valve area (accumulating where the tube bends down like a trap) and it had formed a nice oil stain going down into the carpet.

I was wondering if anyone ever had a leak there.... yes when I replaced everything, all new o-rings too.

Thanks,
Greg
Montreal, Canada

Been there, done that on an 89 244, new seals and all. It can be tough to get the expansion valve to line up with the threads/pipes during installation and that makes it easy to nick an o-ring. Mine leaked a lot more than yours though, the charge was gone in a week.

I would recommend replacing the expansion valve seals with plenty of lube on them. From there, if you want to be safe, replace the receiver drier and vac the system out. If you want to take a small risk, leave the receiver drier, don't vac it out and just recharge the system.

jorrell