AC low fitting to refill system?
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AC low fitting to refill system?
Which fitting is the low side fitting so I can refill the system, i think its the red one but i just want to be sure.. its all new stuff so there's no r-12 in the system, I just have to convert the fittings to
r-134a fittings.
r-134a fittings.
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From: Insane
See that 'S' on the one in red? That means 'Suction'. Suction means low pressure. There ya go. You'll notice the other one, the blue one, leads to the fitting on the compressor that has a 'D' for Discharge.
Also, I want to say proper fittings for both R-12 and R-134, and adapters thereto, are not reversable. That is, the high side can't be connected to low side hoses, and vise versa. If you have a set of gauges, the blue hose goes on the red circled port, and the red hose goes on the blue circled port, and should NOT go on the other way, even with the adaptors.
Anyway, 'S', the red circled one, is the one you want.
Also, I want to say proper fittings for both R-12 and R-134, and adapters thereto, are not reversable. That is, the high side can't be connected to low side hoses, and vise versa. If you have a set of gauges, the blue hose goes on the red circled port, and the red hose goes on the blue circled port, and should NOT go on the other way, even with the adaptors.
Anyway, 'S', the red circled one, is the one you want.
Last edited by houtex; Jun 19, 2013 at 07:56 PM.
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Joined: January 21, 2013
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See that 'S' on the one in red? That means 'Suction'. Suction means low pressure. There ya go. You'll notice the other one, the blue one, leads to the fitting on the compressor that has a 'D' for Discharge.
Also, I want to say proper fittings for both R-12 and R-134, and adapters thereto, are not reversable. That is, the high side can't be connected to low side hoses, and vise versa. If you have a set of gauges, the blue hose goes on the red circled port, and the red hose goes on the blue circled port, and should NOT go on the other way, even with the adaptors.
Anyway, 'S', the red circled one, is the one you want.
Also, I want to say proper fittings for both R-12 and R-134, and adapters thereto, are not reversable. That is, the high side can't be connected to low side hoses, and vise versa. If you have a set of gauges, the blue hose goes on the red circled port, and the red hose goes on the blue circled port, and should NOT go on the other way, even with the adaptors.
Anyway, 'S', the red circled one, is the one you want.
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Joined: February 2, 2004
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From: Insane
If the water temp is higher it's because the added heat of the A/C condenser is not allowing the radiator to work as good. The condenser sits in front of the radiator, and the air goes in to that, carrying the heat from that into the radiator and then out the radiator.
It indicates a potential radiator problem, unless the car was running far cooler than it should be... but that's what the thermostat is supposed to prevent. Might want to have the cooling system checked out, just in case.
It indicates a potential radiator problem, unless the car was running far cooler than it should be... but that's what the thermostat is supposed to prevent. Might want to have the cooling system checked out, just in case.
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From: Insane
Heh, I'm not just another pretty face with wit and charm and irritating ripostes. 
Thanks much for the complement, Tom. I love to help when I can. After all, we're all in this thing together, tryin' to keep cars running, right? 
/Air conditioning a '66 Thunderbird will learn you a thing or two, lemme tell ya.
//Way way not enough air movement outta them center vents, but hey, they had *joysticks!*:
Thanks much for the complement, Tom. I love to help when I can. After all, we're all in this thing together, tryin' to keep cars running, right? /Air conditioning a '66 Thunderbird will learn you a thing or two, lemme tell ya.
//Way way not enough air movement outta them center vents, but hey, they had *joysticks!*:
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If the water temp is higher it's because the added heat of the A/C condenser is not allowing the radiator to work as good. The condenser sits in front of the radiator, and the air goes in to that, carrying the heat from that into the radiator and then out the radiator.
It indicates a potential radiator problem, unless the car was running far cooler than it should be... but that's what the thermostat is supposed to prevent. Might want to have the cooling system checked out, just in case.
It indicates a potential radiator problem, unless the car was running far cooler than it should be... but that's what the thermostat is supposed to prevent. Might want to have the cooling system checked out, just in case.
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