Bilal928S4

I am in the middle of replacing all the O-rings in my AC system for my 91 GT. I had a leak somewhere in the system that would leak pretty fast when I had the system pressurized at 300psi from a nitrogen tank. Did not hear any leaks.
So far I have replaced the O rings at the expansion valve for the front (4 O-rings) and one at the fire wall after the fuel cooler. Mine did not have one before the fuel cooler.
Now I have to replace the ones at the compressors and the ones in the front by the condenser.
The next step would be to do the ones for the rear AC.
Any suggestions or tips would be appreciated.
I tried the search function, but nothing notable came up.
Thanks

soontobered84

Don't forget the two at the solenoid under the passenger seat.

ammonman

The rear lines have short hose sections where they run under the rear console up to the expansion valve. One of those might have let go. Removal requires taking out the rear console and removing the entire in-cabin rear line set including the bulkhead fitting that passes the lines through the body.

Mike

jeff spahn

Don't forget the Nylog Blue! Get it from any plumbing supply house or Amazon.

Bilal928S4

What do I do with the nylog blue?

928 at last

Lube yer ring with it....
So much humour...so little time.....

928 at last

Seriously...it helps seal everything and is compatible with the refrigerant.

Bilal928S4

OK, tried Grainger & ABCO refrigerant and they do not have NYLOG BLUE available. Any other places that might carry this as I want to do this project this weekend. I am in the NY/NJ/CT area.
I know it is available by mail through Amazon, but it will be here by next week.

Speedtoys

You did not mention the two huge Rings that seal the inlet/outlet to the AC compressor itself.

They will look like this:

Bilal928S4

Jeff,
Actually Roger is sending me the whole rear AC O Ring kit + the O rings that go under the Inlet Outlet plate on top of the compressor housing. I already have the front AC O ring kit and got a part of it installed. Did you have to take the compressor OFF to change these O rings?
I will be tackling all these this weekend, that is why I am looking for some NYLOG BLUE per your recommendation.

Speedtoys

Ya..easiet to pull it down.

IMHO, replace the front hangar bolt with a button head allen bolt...cuz you can NOT get a wrench/socket on that sucker with the belt and pulley in the way. Allen wrench, yes!

I did all of mine W/O that stuff, just..replaced em with Colin. Been fine. Compressor oil we used to lube them.

Bilal928S4

Any pictures on how to take the rear console out?

fraggle

I do not have any pics, but know it comes out as as only two parts, top then sides and front all at once.

There are two screws at the back that hold the vent on. Remove them.

The rearward most intake vent comes off from there, pull carefully.

Two more screws will be revealed in the padding. Remove them.

The piece with the AC vents in it will now come out, it is slotted into the front piece and pivots from there.

There are now 4 small screws that hold the entire console on. They are mounted two on each side. Remove them.

The remaining console surround should come out in one huge piece. Go slow and use care, the plastics that keep it one piece are brittle and easy to shatter.

Good luck!

Bilal928S4

Here is a brief write up of my experience. Sorry not as elaborate as Dwayne's.
Use at your own risk.

Bilal928S4

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