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#1
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A/C question - where is the high press service port?
Is the high press service port located on top of the Receiver/Dryer? If so, my R134 retrofit service port will not fit on top of OEM service port. Furthermore, if I were to remove the OEM service port, the threading is a different size than my retrofit service port.
What gives? Do I have to get some sort of a special R134 high press service port or am I missing the location of the oem service port all together? Thanks for any help! '92
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E |
#2
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I don't know if the '92 is different, but on my '96 the high-side service port is on a tube just above the compressor. The cap has an "H" on it.
The low-side service port is not too far away, hovering between the battery and the oil fill port. Its cap has an "L" on top. I don't see any ports on the receiver/dryer, in front of the passenger-side wheel well.
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#3
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Thanks, it sounds like my '92 is a tad different. I bet my high press port is the one on top of the drier but dang if I can make it work!
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E |
#4
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I don't think so. I think both the low and high should be over by compressor. It's that way on both of my svxii
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#5
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Correct - both are over by the compressor. There is a fitting on the dryer, but that is not the one you should use. Good luck.
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. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#6
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There's a diagram in this thread:
A/C Compressor InstallationLooks like it was grabbed from SubaruParts.com. It's not annotated, but still might help a little. The service port caps are 73474 (high) and 73474A (low). So the refrigerant flow in the SVX is roughly clockwise? Where is the orifice tube hiding? On a '95 Cadillac whose A/C system I just worked on, the low-side port is on the side of the receiver/dryer. If the one on your SVX is aftermarket, you might indeed be seeing another port there.
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#7
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Quote:
Here's what my compressor area looks like: Receiver dryer So.....what can I use as my high pressure service port?
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E Last edited by alia176; 06-26-2007 at 05:36 AM. |
#8
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Use the fitting that is in the red box in the above post.
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. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#9
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Quote:
So, is my '92 just unique or is Subaru wanting us to use the port on top of the receiver/drier? I wonder if the Subaru OEM R134 retrofit kit includes an adapter that fits on top of the port that's currently on the receiver/drier?
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E |
#10
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Quote:
I think you may be on to something, I may indeed need to use the receiver/dryer fitting but over the shelf retrofit kits don't have R134 fittings for it! I'll take a swing by Subaru to see what gives! Thanks
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E |
#11
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What do you need the ports for? Reading or charging? I'm not sure about cars, but when I work on chillers, I charge the system on the low side.
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#12
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The port that is shown in the red square is where I have always charged mine. I draw a vaccume and then charge it there. No problems so far.
__________________
. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#13
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Quote:
You should charge into the low side. Yes, if you evacuate the system the vacuum would draw refrigerant into the high side initially. But you'll eventually reach a point where you need to run the A/C compressor to add more. The pressure of the refrigerant inside the can won't overcome the pressure coming out of the high side of the compressor, so no more refrigerant will be added to the system. You'd also risk having the can explode in your face. Useful links: Automotive Air Conditioning Systems at familycar.com
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David C. 1996 Laguna Blue Pearl SVX L AWD See my home page for SVX radio install/removal instructions and wiring harnesses |
#14
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Those are very good sites. Thanks.
__________________
. Earl .... ... .... ><SVX(*> Subaru Ambassador [COLOR=”silver”]1992 Tri Color L[/COLOR] ~45K (06/91) #2430 1992 Dark Teal LS-L ~184K (05/91) #0739 1992 Claret LS-L ~196K (05/91) #0831 1992 Pearl LS-L ~103K (06/91) #1680 1992 Pearl LS-L ~151K (06/91) #2229 1992 Dark Teal LS ~150K (07/91) #3098 (parts car) 1992 White LS-L ~139K (08/92) #6913 1993 25th AE ~98K (02/93) #164 1993 25th AE ~58K (02/93) #176 1993 25th AE ~107K (02/93) #215 1993 25th AE ~162K (02/93) #223 1994 Laguna Blue Pearl LSi ~124K (1/94) #2408 1994 Laguna Blue Pearl LSi ~144K (10/93) #1484 1994 Laguna Blue Pearl LSi ~68K (10/93) #1525 1994 Barcelona Red LSi ~46K (02/94) #2624 1994 Pearl LSi ~41K (12/93) #1961 1995 Bordeaux Pearl LSi ~70K (02/95) #855 1996 Polo Green LSi ~95K (03/96) #872 1997 Bordeaux Pearl LSi ~55K (08/96) #097 2003 Brilliant Red LS1 Convertible ~29K (04/03) #8951 1999 Magnetic Red LS1 Coupe ~33K (04/99) #6420 My Email | Old Locker | New Locker | Picture of 15 of the 19 |
#15
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As stated above, it's important to use both service ports for diagnosing, evacuating and recharging the A/C system (through low press port) properly. What I'm trying to do wouldn't be a biggy if I were to use R12 manifold gauges but this is becoming an issue for R134 gauges!
If anyone with a '92 has converted over to R134a, can u shoot me a pic of your high and low press ports, detailing the R134a nipples? If you have installed a R134a high press fitting over the receiver/dryer high press port (see my pic above), where did you get that nipple? Thanks.
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If it ain't broken it, doesn't have enough features!!! '92 SVX LSL '03 4Runner '96 FZJ80 Landcruiser '90 Mercedes 300E Last edited by alia176; 06-26-2007 at 05:37 AM. |
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