I've searched and read all the ac related posted but I can't figure out which sealing washers to use for a 4 Seasons 57255 rebuilt HR6 compressor. There were no rebuilds available at the parts store with the o-ring style body only the flat sealing washer body. The HR6 came with a adapter kit that has three flat washers and two adapter tubes. There are various combinations of washers and adapter tubes depending on which of the three possible compressor bodies and which four possible hose assembly blocks. I'll figure out which compressor mounting flange when I release the pressure that shipping cover holds from the factory. The question I have is the hose assembly block looks like two of the possible block configurations, which one do we have on the v6 cars?


O-ring block with inserts or 5/8" X 5/8" raised? It had used o-rings, but the openings are also 5/8"x5/8". So which option did you guys use?



I'm sure someone here has used the same rebuilt compressor and run into the same problem, anybody offer any assistance?

[This message has been edited by speed1 (edited 07-31-2011).]

I just did this conversion and used the green and the red with the inner bushings for both. It will be apparent as to which side gets the red when you remove the cover plate. I also found it easier to place the red and green oring adapters on the hose end rather than having them sit in the compressor.

marc-alan, thanks for the reply. You are right about the compressor mounting flange, I will be able to figure that out after I remove the shipping cover, but the hose assembly block is what I can't figure out. So if you did both the long and short bushing pilot tube adapters then we have the the O-ring block with inserts and NOT the 5/8" X 5/8" raised hose assembly block. The 5/8" X 5/8" does not use any of the bushing pilot tubes, where the o-ring block uses at least one bushing. The hose assembly block kindof fits the description and pics of both on the instructions.

[This message has been edited by speed1 (edited 07-31-2011).]

There must be more PFF'ers who have installed a Factory Aire/ 4 Seasons 57255 compressor that used the flat sealing washers? With marc-alan's response I think we have the o-ring block, anyone else use the same or different hose assembly block?

How about the little pilot bushings that come with the kit, which way does the narrowed end face? Does the narrowed end face the compressor and the larger end towards the hose assembly block or visa versa?

[This message has been edited by speed1 (edited 08-08-2011).]

There was a TSB from GM about how they changed they way the hoses couple to the compressor. The early method used o-rings, with o-ring groves in the compressor. The later method used sealing washers, with washer depressions in the compressor. The TSB stated that when you get a re-manned compressor, you're likely to get either kind.
You can get sealing washers here.

TopNotch, thanks for the reply and the link, but the adapter kit was included with the compressor so I don't need any additional washers, but good to know if I need any additional parts. The only replacement compressor that was available at the time uses the sealing washers. I would have preferred the o-ring type as I already have the correct hbnr rings, now I have to deal with the o-ring to sealing washer adapter kit tha was included with the compressor. The instruction sheet that came with the adapter kit is not very clear on exactly how and what washer to use.

[This message has been edited by speed1 (edited 08-08-2011).]

I just went through this ordeal about 2 months ago. I used green and red with no pilot bushings. System sealed perfectly.

Thanks to all for your replies. I think I'll go without the pilot bushings. It seems that it should work both ways with and without the bushings since there has been sucessful installations both ways.

[This message has been edited by speed1 (edited 08-09-2011).]

Speed1,

I am inquiring as to how you made out? Is your system holding refrigerant without leaks? The reason I ask is because I paid a lot of money to have a new Delphi compressor installed, and despite coming with a gasket/seal kit I think he did it wrong. My system will not hold refrigerant for more than a month or so. So I have to go back in there myself and sort out the problem. I realize the Delphi may be different, but I'm wondering if just the red and green sealing washers (with NO other seals, o-rings or washers) did the trick for you.

Regards

[This message has been edited by William Hill (edited 05-19-2012).]

William,

The sealing washers are holding without leaks and I have cold ac. I used the sealing washers without the pilot bushings. I think the pilot bushings help center the washers while the hose block is bolted to the back of the compressor. I wish they stayed with the o-ring seal, I am not a fan of adapters on any parts. I hope you work out whatever is causing the leak. Hopefully your mechanic used the oil with the UV dye, a UV light will help show the leak.

quote Originally posted by flimbob: I just went through this ordeal about 2 months ago. I used green and red with no pilot bushings.

This was the way I also installed mine.

Green sealing washer # 24357. I got a box of 5 from Summit or Jegs. Less than three $ for the whole box. Not sure which it was now.
Red sealing washer # 24356. Ditto
-Joe

[This message has been edited by josef644 (edited 05-20-2012).]

I just put in the four seasons 57255 last week. The flat sealing washers go into recesses in the compressor. One recess is deeper than the other and takes the thicker sealing washer. The factory pilots are too short to guide the block properly so the tube extensions are pressed onto the hose block to extend the pilots. That's not to say you won't locate the block & washers correctly. The pilot extensions just make it certain. The sealing washers are a compression stop for the rubber seal. When they're torqued down there's a visible gap where you'll see the red & green metal rings. Seems to seal fine. You'll also need replacement high pressure cutoff & fan on switches & connectors.. My old switches wouldn't come out without breaking them. I spliced the grounds for the two switches to a 10-24 stud on the back of the starter.
Don't forget to add oil. Four seasons compressors are shipped dry. 1/2 the 8 oz to the comrpessor and the 1/2 the 8 oz to the new accumulator.
The clutch on the four seasons compressor is noticeably louder than my old HR6.

The compressor comes pressurized and the block-off plat is is marked 5/8 x 5/8S (inlet & outlet are 5/8 and the discharge port is stepped down which means it used the thicker sealing washer.