AC o ring replacement question
Thread Starter
Joined: Jul 2009
Posts: 1,568
Likes: 35
From: CA
AC o ring replacement question
94 R12 system. Can i just use the autozone green oring kit? To my knowledge they are both compatible ?
Also. I found the 1 big leak being the low side fitting on the rear of the compressor. To have access and replace/clean the area. Is it wise to remove the power steering pump ? It seems really cramp just by eyeing it
Also. I found the 1 big leak being the low side fitting on the rear of the compressor. To have access and replace/clean the area. Is it wise to remove the power steering pump ? It seems really cramp just by eyeing it
Yep, the green O-rings will do fine. They are rated for 134a and R12. Big thing is getting the right size, you have to nail the size exactly.
The O-rings need to be lubed when you install them. I bought some stuff called Nylog a while back, it's a gooey oil that lubricates the O-ring and helps hold it in place. One small bottle will probably last the rest of your life. Or, you can use some of whatever refrigerant oil you're using.
Depending on how far you're taking the AC apart you may just want to remove the compressor and get to the lines that way. 4 12mm bolts on the side of the compressor. Might be worth removing the PS pump, it's a bit of a chore to remove and you need an impact gun to easily get the pulley nut off of it. Most attempts to use a traditional wrench and hold/keep the pulley from spinning results in breaking the pulley.
Dale
The O-rings need to be lubed when you install them. I bought some stuff called Nylog a while back, it's a gooey oil that lubricates the O-ring and helps hold it in place. One small bottle will probably last the rest of your life. Or, you can use some of whatever refrigerant oil you're using.
Depending on how far you're taking the AC apart you may just want to remove the compressor and get to the lines that way. 4 12mm bolts on the side of the compressor. Might be worth removing the PS pump, it's a bit of a chore to remove and you need an impact gun to easily get the pulley nut off of it. Most attempts to use a traditional wrench and hold/keep the pulley from spinning results in breaking the pulley.
Dale
Thread Starter
Joined: Jul 2009
Posts: 1,568
Likes: 35
From: CA
Yep, the green O-rings will do fine. They are rated for 134a and R12. Big thing is getting the right size, you have to nail the size exactly.
The O-rings need to be lubed when you install them. I bought some stuff called Nylog a while back, it's a gooey oil that lubricates the O-ring and helps hold it in place. One small bottle will probably last the rest of your life. Or, you can use some of whatever refrigerant oil you're using.
Depending on how far you're taking the AC apart you may just want to remove the compressor and get to the lines that way. 4 12mm bolts on the side of the compressor. Might be worth removing the PS pump, it's a bit of a chore to remove and you need an impact gun to easily get the pulley nut off of it. Most attempts to use a traditional wrench and hold/keep the pulley from spinning results in breaking the pulley.
Dale
The O-rings need to be lubed when you install them. I bought some stuff called Nylog a while back, it's a gooey oil that lubricates the O-ring and helps hold it in place. One small bottle will probably last the rest of your life. Or, you can use some of whatever refrigerant oil you're using.
Depending on how far you're taking the AC apart you may just want to remove the compressor and get to the lines that way. 4 12mm bolts on the side of the compressor. Might be worth removing the PS pump, it's a bit of a chore to remove and you need an impact gun to easily get the pulley nut off of it. Most attempts to use a traditional wrench and hold/keep the pulley from spinning results in breaking the pulley.
Dale
Thread Starter
Joined: Jul 2009
Posts: 1,568
Likes: 35
From: CA
For future readers running into the same questions
This is what I did. My leak was from the low pressure ac hose behind the ac compressor, under the powersteering reservoir . For easy access to the nut ,just remove the alternator charge wire and the clip off the alternator. Put it aside and there's the straight access to the nut. It's a 13mm . Once the nuts out just simply push it to the side and get under the car. You should have enough room for you to change the oring and some what clean up the area. This is only for not removing the compressor and changing of the rear oring . Lube it up with nylog oil or was free mineral oil before installing
This is what I did. My leak was from the low pressure ac hose behind the ac compressor, under the powersteering reservoir . For easy access to the nut ,just remove the alternator charge wire and the clip off the alternator. Put it aside and there's the straight access to the nut. It's a 13mm . Once the nuts out just simply push it to the side and get under the car. You should have enough room for you to change the oring and some what clean up the area. This is only for not removing the compressor and changing of the rear oring . Lube it up with nylog oil or was free mineral oil before installing
Last edited by kensin; Aug 10, 2017 at 12:26 AM.
