Calgary Ole

During winter maintenance projects I found oil has leaked from here.

After cleaning up the oil it seems to be from this fitting.
I would like to find the leak and repair.
Which part do you think is the leak?

Calgary Ole

Compressor picture is not the issue and was posted by mistake.

Does the electrical 2 spade connector leak or the threaded piece?

SeanR

Either the low pressure switch under the drier or the R-134 retrofit connectors. Easy to replace the seals for them.

Calgary Ole

Oil was on the rubber boot over the LP switch.
Retrofit was dry.
Repace the LP switch?
How does it come off as there is a hard line that I do not want to damage?
Thanks Sean!

SeanR

Comes off very easy if the a/c system is empty. o-ring is very small. I think it is a 32 or 34mm wrench to take it off......lemme check. ooops 27mm. Screws off normally.

If the system is full and you try to yank that off, expect a mess.

Give it a small cinch up and see if it is a tad bit loose.

Calgary Ole

Rubber boot is beside the dryer.
Tried a little cinch and is tight.
I'll try to take a better picture, but would the 2 spade connector leak?

SeanR

It can leak, as can the high pressure switch. Is the system empty of pressure? I'm guessing that the R-134 conversion was not done properly, which means all oil drained from the system and all seals replaced.

Calgary Ole

I have become a bit of an AC geek. I can say it was done properly with all new green o rings, dryer, expansion valve, etc. I even took all hard lines apart and cleaned them as per Dr. Bob, Merlin,Sean and many other poster's here.
My HVAC and AC has worked perfectly and still does. My concern is the sudden oil leak which I think may be the switch itself.

Calgary Ole

System is full. Its cold here so I will have to start the car to see if it has lost pressure.
Up here we tend to not run our cars from Oct to April.(right Malcom)

SeanR

The sensors can leak and I've found those to be the most frustrating ones to find, because you don't look there for them. They leak sometimes away from the seals and that sucks when you are doing a pressurization leak test.

Calgary Ole

I ran the car and the compressor clutch slowly turned which indicates the a loss of chemical/pressure.
I will hook up guauges and evacuate Sunday.
Can I order a new switch and what part #.
Thank you!

SeanR

Check with Rog on Monday but I think the part is 959 613 137 00

SeanR

Just out of curiosity, did you change the two o-rings at the fuel cooler?

Mrmerlin

FWIW its quite common for oil to be on the parts your showing,
as when the charge hose is removed gas/oil will escape and spray down onto the parts that are wet.
You may not have a problem here

Calgary Ole

Fuel cooler o rings changed.
When I bought the car no AC. I used Rennlist search as well as new parts to make it work properly for the past few years.

Sean..Thanks for the part # and your insight!
Merlin..I have not attatched AC guages to the "high side" for a cople years. For the most part, you can eat off the engine compartment on this car. The oil mess is from Oct untill today so must be a new leak. Car has been dormaint until today.

I guess my unknown is if the electrical component can leak or the threaded connection. Hard to tell from what I found today as the oil was from the rubber boot down.
The underside of the piece where the 2 spade connector attatches has a red 'button' in the middle.