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loydjones
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Apr 15, 2015, 2:23 PM
Post #1 of 8
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1993 buick century AC
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Replacing ac compressor and converting to 134A. Cant break line connection loose where orifice tube is located. Any suggestions to break it loose without twisting it off?
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Tom Greenleaf
Ultimate Carjunky
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Apr 15, 2015, 4:38 PM
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Re: 1993 buick century AC
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Eeek! Hard to guess if it will break or not at this point/age. Alloy/aluminum line to same probably will be so stuck by now will be like welded. Try PB and wait even a day and hope, use two flare nut type wrenches and if it breaks you are probably going to have to replace next line/item up till you can get a clean undo right along. Stinks but they don't cooperate well in a few years never mind if back to 1993!
You tell me, what are you finding for all parts that you could need - any, hoses, evaporator, condenser too OE tube + fin or if already done along the way could be high efficiency and not flush out without jumping some real hoops up to needing stuff made up custom now.
Switch year - 1993 doesn't help at all. Might have already been done and not OE stuff now.
If you must have A/C working in this you really might need a high end A/C specialty shop for help if repair of a fitting or hose made up required if practical at all.
Do you have old compressor out now? If so any evidence of debris in oulet and oil that can come out of it?
How far were you planning to go for the retrofit anyway? If OE R-12 hoses still and could be are probably so "impregnated" with oils they won't leak with 134a like a newer non-barrier hose likely would. Plenty more than ordinary can go wrong with this job so suggest know now where you can get exactly what you might end up needing new or made up now. Yes it can I just don't know anyone near me (Northeast US) who for sure still makes up fittings and would have to go out hunting myself,
T
(edit in more) I did find a kit I never have used to splice in an O tube at evaporator. Hope this shows......
That will totally depend on condition of what's left to work with and IMO real risky not to work without leaking,
Tom
(This post was edited by Tom Greenleaf on Apr 15, 2015, 4:46 PM)
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Hammer Time
Ultimate Carjunky
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Apr 15, 2015, 6:03 PM
Post #3 of 8
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Re: 1993 buick century AC
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If those fittings are seized, nothing is going to save them. When they finally come apart, the threads will be stuck on the nut and gone from the male side. You're probably looking at replacing the lines.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
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Apr 15, 2015, 6:11 PM
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Re: 1993 buick century AC
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I hate when that happens. Applying never seize going back together is helpful. No need to crank the crap out of it when you tighten them either. Don't use PAG oil on the threads. That attracts moisture and will end up just how yours is now.
You may be able to split the nut and save at least one of the lines. I've never tried the heat wrench on one of those. Wonder how a miniductor would do on something like that.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Apr 15, 2015, 6:20 PM)
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Hammer Time
Ultimate Carjunky
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Apr 15, 2015, 6:16 PM
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Re: 1993 buick century AC
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I have a rethreader kit for those but you usually can't save them.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
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Apr 15, 2015, 6:22 PM
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Re: 1993 buick century AC
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Oops...looks like the nut is on the condenser...yikes.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Apr 15, 2015, 6:24 PM)
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Hammer Time
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Apr 15, 2015, 6:39 PM
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Re: 1993 buick century AC
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That's probably a good thing. It will be far more readily available than the aluminum lines.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
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Apr 16, 2015, 3:37 AM
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Re: 1993 buick century AC
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OP= loydjones
If you are still watching this thread I'll ask again if you REALLY need A/C to work in this car AND add is the car overall good enough to go totally nuts to have A/C?
Unless you really know this only needs a compressor and caught it before it trashed itself still working some perhaps I'd forget it. Car isn't (no harm meant) special by model or collectible so you are going to open a Pandora's box of failures and poor outcome at best IMO.
If you REALLY need A/C (some absolutely do) it's actually better now to get another car totally. Go ahead and look if needed bet you'll find a compressor by-pass bracket and pulley if this engine must have a pulley where compressor is now just for these.
Zillions of people live where A/C just isn't that critical and STILL will buy vehicles without it new,
T
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