Where's the low pressure port to recharge R134A?
06-14-2008, 04:11 PM
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Where's the low pressure port to recharge R134A?
I've found a red cap / port on the driver's side near the top of the strut, but the port does not accept the standard fitting for recharge.
Is this the right fitting? If not, let me know where to find it. I need A/C! (Car was converted to R134A and worked OK last Fall.)
Is this the right fitting? If not, let me know where to find it. I need A/C! (Car was converted to R134A and worked OK last Fall.)
06-15-2008, 11:04 AM
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Interestingly enough, I bought two kits and attempted to put the retrofit piece on there with no luck. Anyone do this successfully -- am I overlooking something obvious? Trying to get P-Greg the info so he doesn't go through the issue...
06-15-2008, 02:08 PM
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You may need to buy a 90 degree elbow for the port on the compressor.
06-15-2008, 02:38 PM
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FYI TOO ALL..
it's been 15 or so years since i was in the trade (and the memory isn't what it was
but i doubt much has changed fitting wise. so your standard "original" r12 system fitting is threaded and looks basically like a valve stem.
the 143a conversion is usually just a fitting that screws on top of that and makes it a push on type fitting, like a shop air hose etc.
least that's how it was done back in the day.
if your system was converted by a shop they should have put a sticker somewhere under the hood and colored caps on the new fittings, red for the high pressure side and blue for the low.
ALSO as much as i hate paying someone to work on my cars it is best to have a pro do this... pulling a vacume then adding the proper amount of refrigerant with gauges IS the best way to get the most out of 134a... it doesn't cool as well as the old stuff...
it's been 15 or so years since i was in the trade (and the memory isn't what it was
but i doubt much has changed fitting wise. so your standard "original" r12 system fitting is threaded and looks basically like a valve stem.the 143a conversion is usually just a fitting that screws on top of that and makes it a push on type fitting, like a shop air hose etc.
least that's how it was done back in the day.
if your system was converted by a shop they should have put a sticker somewhere under the hood and colored caps on the new fittings, red for the high pressure side and blue for the low.
ALSO as much as i hate paying someone to work on my cars it is best to have a pro do this... pulling a vacume then adding the proper amount of refrigerant with gauges IS the best way to get the most out of 134a... it doesn't cool as well as the old stuff...
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06-15-2008, 04:54 PM
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06-15-2008, 06:00 PM
#9
For the 90degree adapter you need to remove the shrader valve from the r12 fitting, low side is on the back of the compressor, i have had both the 90degree fittings leak on me, so i just did a high side charge through one of the easier to access high side ports.
Mark
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06-15-2008, 07:26 PM
#12
[QUOTE=diego944;5513573]75ohm.. whatever fitting you use should have green o-rings in them...
QUOTE]
Dont HAVE to be green, i use the black A/C o-rings cause thats what i have.
Mark
QUOTE]
Dont HAVE to be green, i use the black A/C o-rings cause thats what i have.
Mark
06-15-2008, 07:43 PM
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true, but originally they made all the new 134a o-rings green because the different oil and freon would degrade the old kind after awhile, causing leeks and the pressures on converted systems were also higher with the new refrigerant.
i don't KNOW if they still use a different 0-ring anymore. i'm sure rubber technology has changed a lot over the years, but just be aware there was a reason for them in the beginning. they were talking "years" for the o-rings to break down.
i don't KNOW if they still use a different 0-ring anymore. i'm sure rubber technology has changed a lot over the years, but just be aware there was a reason for them in the beginning. they were talking "years" for the o-rings to break down.
06-15-2008, 08:00 PM
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