Yet another air conditioning thread!

[andymac0035]

Well.......that was a loooong time ago....and I never did take any pics of the engine bay.
But I do remember that "we" (mostly my Dad) did change out the heater core in that car. It was time consuming more than anything (taking the dash apart).

If I remember right (and that's a really big if) there was just a simple duct on the firewall like you'd see on any old car (or truck) that didn't have A/C.
Oh, and I havn't seen a pic of the duct on your wagon......

If it helps.....that kit I used came with the adapter fittings too.

[andymac0035]

I still had the box that kit came in......found their website for you.
http://id-usa.com/product.asp?CID=28&PID=24

Like I said......it's the cheap route. I didn't buy anything else. (but it did work)
Personally, I think what Gadget73 was telling you was the way to go if you want things 100% correct.

[Piece-it pete]

I've been reading old ac threads and am somewhat confused.

I had my ac in for service. Fyi it's already been converted to 134. He showed me the leaking part. I'm uncertain of what the parts are called so I'll describe it:

Two hoses come off the compressor. One goes: short pipe with a valve, to a small black can, to the condenser. I believe this is the 'liquid' line. There are no fittings on this line except the two ends, it's all one piece.

It's leaking at the bottom of the valve bit, where the valve is connected to the metal line.

So I have to replace this line. Here's my problem: it's not sold as one piece and I'm uncertain which bits I need.

I've got the pictures in the order I'm mentioning them: 1) REPAIR KIT,ORIFICE TUBE LINE EVAPORATOR CORE, W/O SPRING LOCK, W/O TUBE. Is this the bit between the compressor and the small black can?

2) the small black can. Is this the 'A/C Receiver Drier / Accumulator'? (I see another 'big' black can back by the evaporator but there's no way to judge size)

3) The 'liquid line' itself, this goes between the small black can to the condensor?

If this is correct I see another problem, if the orafice 'tube' is indeed the bit between the compressor and the little black can, this is where there is currently the leaking valve, and the orafice tube does not have the valve. Is this a problem?

And a couple general questions. I suppose I should change all the o-rings, what kind do I use? Do I need any other clips? And it looks like all the metal connectors are aluminum. Is there any special way to break them loose, or do I just treat them like any other connection? Am I missing anything?

Thanks.

Pete

[Piece-it pete]

Ach, the pics:

[Piece-it pete]

I finally found a drawing of a typical ac system. So the accumulator IS the 'big' can.

So what in the heck is the little can?

Pete

[Piece-it pete]

Man, am I thick. Thanks for putting up with me, just writing it out helps.

The attached is a diagram of a typical A/C setup.

What I need is the discharge hose. It seems to be hard to find.

I think I'm going to hit the yards before forking out for it.

So all I really need to know is, what o rings should I use?

Pete

[1987cp]

By "little can", do you mean the one that's sort of attached to the compressor? I'd be interested to know what that is also.

IIRC, you should always service your A/C system with Viton O-rings whenever possible, since they're R-134a compatible. Guessing butyl isn't for some reason? I'm sure Thain has a post or several about that somewhere.

[Piece-it pete]

Yeah, right after the high pressure service port mentioned on the drawing. So far everyone says 'it must be some kind a filter'. If I find out for sure I'll post it.

Viton eh? Thanks.

Anyone use used hoses?

Pete

[gadget73]

The small can right off the compressor discharge fitting is some sort of a muffler to even out discharge pulses or somesuch nonsense. It might be a filter designed to catch chunks from the compressor if it grenades.

I wouldn't go for a used hose. Yours leaks, chances are another old one will too. Thats also on the discharge side, the pressure gets easily over 200 psi right there. Also, 85 and older hoses are different. They don't have springlock fittings on the condensor end, you've got threaded connectors. Autozone actually lists the discharge hose for 85 bucks. ReadyAire 35209 or Everco 5567. If you've got the system open, the accumulator ought to be replaced as well. O rings are typically the green ones for R134 conversions.

[86VickyLX]

By "little can", do you mean the one that's sort of attached to the compressor? I'd be interested to know what that is also.

IIRC, you should always service your A/C system with Viton O-rings whenever possible, since they're R-134a compatible. Guessing butyl isn't for some reason? I'm sure Thain has a post or several about that somewhere.

That little can, is a muffler for the a/c system.

[monterey1962]

Just ran my a/c in the '88 for the first time in ... who knows how long. Blew cool to moderately cold. If I remember right, Scott recharged it back at SF07. Can I just get one of those cans from Wal-mart with the hose to give the system a quick charge? System is R134a.

[Lincolnmania]

you should be able to get the 85 hoses, from autozone or rock auto..... they were all over ebay real cheap for the set of three last yr but i dont see em no more

yea you can fill it up with a can monty

[Ringting]

canister with white label, 2162-244-001, COCLISA, Z4DS9



1989 MGM
Evap to Comp: PH 7604-08 --- 13/32" 10 mm ID-0789B
Comp to Cond: 12 --- 5/8" 16 mm ID -- 1069
Cond to Filter: MotoCraft YF-1771 FOVY-19835-B E049A

Open to information on other parts to purchase. Great start to this thread, thank you 1987cp.

[Ringting]

This is being posted here as it seems the thread is allowed to wonder. A new one can be started if other's wish.

I was not able to locate the A/C Clutch Diode, or C461. If I buy new parts (ones always encouraged) can I seek out an R12 provider as that is the original refrigerant?

[cadfan64]

This is being posted here as it seems the thread is allowed to wonder. A new one can be started if other's wish.

I was not able to locate the A/C Clutch Diode, or C461. If I buy new parts (ones always encouraged) can I seek out an R12 provider as that is the original refrigerant?

iirc, the clutch diode is across the connector at the compressor clutch. I have recently had my 86 apart but it doesn't have C461, so no help there. There is a ton of R-12 on ebay and craigslist, to be legal you need an EPA 609 certification, or state to the seller that you are buying the R-12 to resell to a certified technician. I took an on line course for $20 and got the licence. I am rebuilding the a/c on a 68 Cadillac Fleetwood (takes 4 pounds of R-12)! Prices on ebay are all over the place, if you are patient you can pick it up for around $25 per 12 ounce can, shipped.