AC Oil How much ?
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Joined: Dec 2001
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From: Allen Texas
AC Oil How much ?
I have a 2000 Coupe.
I am going to replace the AC compressor and other parts this Friday.
How much PAG oil should I put in the compressor before I install it ?
Is 4 oz enough ? Or can I just put some in the low side and some in the high side before charging it. Nothing in the install instructions say how much to use internal to the compressor.
I am going to replace the AC compressor and other parts this Friday.
How much PAG oil should I put in the compressor before I install it ?
Is 4 oz enough ? Or can I just put some in the low side and some in the high side before charging it. Nothing in the install instructions say how much to use internal to the compressor.
Le Mans Master
Joined: Jul 2002
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From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
The manual says to measure how much oil was in the old component after it's removed and then replace with that much oil. The entire system holds 9 ounces, so if your not sure how much is in the compressor then you should be alright pouring in 3 or 4 ounces.
Pro
Joined: Jun 2007
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From: Joppa AL
You need to know how much oil is in the old comp. Prop it up and let it drain from the suction and discharge ports for a while. Then remove the comp crankcase oil drain plug (hex bolt on bottom) and drain that for a while.
Measure what you drained. If it's less than 2oz, add 2oz. If it's more, add the amount you drained.
NOTE: Oil is added through the drain plug, not the low or high side. Torque on drain plug is 15 ft lbs.
This is from my 02 FSM. I would think a 2000 is the same.
Measure what you drained. If it's less than 2oz, add 2oz. If it's more, add the amount you drained.
NOTE: Oil is added through the drain plug, not the low or high side. Torque on drain plug is 15 ft lbs.
This is from my 02 FSM. I would think a 2000 is the same.
Safety Car
Joined: Aug 2000
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From: San Rafael CA
Also, be aware you will need to have a "professional" charge of the system. R134 is "contaminted" by air and moisture. Moisture causes the refrigerant to break down and become corrosive. Obviously that is not good for your system.
A professsional shop has the equipment to pump the system down to a vacumn, and hold it there for a number of minutes, which eliminates air and moisture. Once the system is clear then it adds in the measured correct amount of R134.
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Joined: Dec 2001
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From: Allen Texas
Thanks for the responses. I have the gauges,R134 charts, thermometer, vaccum pump, etc. So I'll be doing the recharge.
One thing I failed to ask is about the PAG oil viscosity.
Internal comp oil viscosity ?
System oil Viscosity ?
One thing I failed to ask is about the PAG oil viscosity.
Internal comp oil viscosity ?
System oil Viscosity ?
Burning Brakes
Joined: Apr 2007
Posts: 966
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From: Phoenix AZ
I'm following this thread too.
Is it necessary or a good idea to replace the condensor when replacing the compressor? I figured I'd ask here instead of creating a new thread since it is a related question.
Is it necessary or a good idea to replace the condensor when replacing the compressor? I figured I'd ask here instead of creating a new thread since it is a related question.
Pro
Joined: Oct 2006
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From: Bryan Texas
pag 150.. what all are you replacing? If you are replacing the accumulator, go ahead and flush the system and add 9 ounces of pag 150. On mine, I hooked up the lines to the new installed compressor and poured the pag oil in the low side line going to the compressor. I can't remember if I poured any of the 9 ounces in the new accumulator or not. I turned the compressor 30 or 40 times by hand... been working great for a over a year.
no need to replace the condensor unless it's clogged or otherwise giving you problems.. I would replace all the O rings in the connections while you had the system open though.
no need to replace the condensor unless it's clogged or otherwise giving you problems.. I would replace all the O rings in the connections while you had the system open though.
Last edited by myk7; Apr 17, 2008 at 07:05 PM.
Thread Starter
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Joined: Dec 2001
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From: Allen Texas
pag 150.. what all are you replacing? If you are replacing the accumulator, go ahead and flush the system and add 9 ounces of pag 150. On mine, I hooked up the lines to the new installed compressor and poured the pag oil in the low side line going to the compressor. I can't remember if I poured any of the 9 ounces in the new accumulator or not. I turned the compressor 30 or 40 times by hand... been working great for a over a year.
no need to replace the condensor unless it's clogged or otherwise giving you problems.. I would replace all the O rings in the connections while you had the system open though.
no need to replace the condensor unless it's clogged or otherwise giving you problems.. I would replace all the O rings in the connections while you had the system open though.
Internal compressor oil Viscosity ?
External compressor oil Viscosity ?
I have one vote for 150 external. I bought 100. The compressor is dry internally in its oil tank.
Tomorrow is D-Day. I dont have a service manual so expert advice is imperative. If I don't get the answer I need I guess I go talk to the dealer before I fire up the new system.
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Safety Car
Joined: Aug 2000
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From: San Rafael CA
I am replacing the accumulator, Orfice tube and the Compressor. Of course flush all other components and lines and replace all the orings, evacuate system properly. I dont think you need to replace the condenser unless the compressor had a melt down and you find lots of metal in the lines and or condensor when you flush it. The orfice tube is a good indicator when you remove it. I am still looking for the same answer though.
Internal compressor oil Viscosity ?
External compressor oil Viscosity ?
I have one vote for 150 external. I bought 100. The compressor is dry internally in its oil tank. Tomorrow is D-Day. I dont have a service manual so expert advice is imperative. If I don't get the answer I need I guess I go talk to the dealer before I fire up the new system.
Internal compressor oil Viscosity ?
External compressor oil Viscosity ?
I have one vote for 150 external. I bought 100. The compressor is dry internally in its oil tank.
Tomorrow is D-Day. I dont have a service manual so expert advice is imperative. If I don't get the answer I need I guess I go talk to the dealer before I fire up the new system.46 (Viscosity) PAG Oil ............... 88901445
R134a refrigerent ...................... 12356150
525 (Viscosity) Mineral Oil ........... 12301108
And they agree with these AC Delco web pages for the A/C system .... see ....
http://www.acdelcotechconnect.com/pi/ac/lubrication.htm
That page has links to other pages on where to put the oil in the system, etc.
There is no "external" oil listed for the compressor. I believe it has sealed/lubricated bearings so there is no "external" oiling to be done.
The mineral oil is for lubricating O-rings and fittings for system re-assembly.
Plasticfan already gave you the right info ... and it basically matches the AC Delco site's info .... put as much PAG oil into the compressor as you drained from the old one ... with 2 ozs the minimum to be put back in - the AC Delco site says 2.5 ozs .... and the "Oil Balancing" page ....
http://www.acdelcotechconnect.com/pd...lance_card.pdf
gives you the amounts for any other components being replaced.
Thread Starter
Advanced
Joined: Dec 2001
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From: Allen Texas
I think this covers it. But I want to clarify.
Sorry but I like to be specific and I am somewhat ****-yitical. No this is not a typo.
1) Oil viscosity required PAG 46.
2) Oil required total 9 Oz.
3) Oil required for compressor reservoir only 2 to 3 oz." measure it"
4) System oil "external to compressor" "other components" 6 to 8 oz. Assuming a complete flush.
Agree ?
Thanks for the links BlackZ06
Sorry but I like to be specific and I am somewhat ****-yitical. No this is not a typo.
1) Oil viscosity required PAG 46.
2) Oil required total 9 Oz.
3) Oil required for compressor reservoir only 2 to 3 oz." measure it"
4) System oil "external to compressor" "other components" 6 to 8 oz. Assuming a complete flush.
Agree ?
Thanks for the links BlackZ06
Racer
Joined: Feb 2006
Posts: 295
Likes: 4
From: Riverside California
The Service Manual lists the part numbers as follows ....
46 (Viscosity) PAG Oil ............... 88901445
R134a refrigerent ...................... 12356150
525 (Viscosity) Mineral Oil ........... 12301108
And they agree with these AC Delco web pages for the A/C system .... see ....
http://www.acdelcotechconnect.com/pi/ac/lubrication.htm
That page has links to other pages on where to put the oil in the system, etc.
There is no "external" oil listed for the compressor. I believe it has sealed/lubricated bearings so there is no "external" oiling to be done.
The mineral oil is for lubricating O-rings and fittings for system re-assembly.
Plasticfan already gave you the right info ... and it basically matches the AC Delco site's info .... put as much PAG oil into the compressor as you drained from the old one ... with 2 ozs the minimum to be put back in - the AC Delco site says 2.5 ozs .... and the "Oil Balancing" page ....
http://www.acdelcotechconnect.com/pd...lance_card.pdf
gives you the amounts for any other components being replaced.
46 (Viscosity) PAG Oil ............... 88901445
R134a refrigerent ...................... 12356150
525 (Viscosity) Mineral Oil ........... 12301108
And they agree with these AC Delco web pages for the A/C system .... see ....
http://www.acdelcotechconnect.com/pi/ac/lubrication.htm
That page has links to other pages on where to put the oil in the system, etc.
There is no "external" oil listed for the compressor. I believe it has sealed/lubricated bearings so there is no "external" oiling to be done.
The mineral oil is for lubricating O-rings and fittings for system re-assembly.
Plasticfan already gave you the right info ... and it basically matches the AC Delco site's info .... put as much PAG oil into the compressor as you drained from the old one ... with 2 ozs the minimum to be put back in - the AC Delco site says 2.5 ozs .... and the "Oil Balancing" page ....
http://www.acdelcotechconnect.com/pd...lance_card.pdf
gives you the amounts for any other components being replaced.
There is no internal/external lubrication,all the oil circulates throughout the system. What you are attemting to do is place the proper amounts where they belong while the system is open, the compressor being the most critical. We use the V 7 compressor (pag 46 vis).
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
I think this covers it. But I want to clarify.
Sorry but I like to be specific and I am somewhat ****-yitical. No this is not a typo.
1) Oil viscosity required PAG 46. <---- CORRECT
2) Oil required total 9 Oz. <---- CORRECT FOR FULL SYSTEM FLUSH
3) Oil required for compressor reservoir only 2 to 3 oz." measure it" < CORRECT
4) System oil "external to compressor" "other components" 6 to 8 oz. Assuming a complete flush. <---- CORRECT (The AC Delco "balancing" page tells you where to spread it around)
Agree ?
Thanks for the links BlackZ06
Sorry but I like to be specific and I am somewhat ****-yitical. No this is not a typo.
1) Oil viscosity required PAG 46. <---- CORRECT
2) Oil required total 9 Oz. <---- CORRECT FOR FULL SYSTEM FLUSH
3) Oil required for compressor reservoir only 2 to 3 oz." measure it" < CORRECT
4) System oil "external to compressor" "other components" 6 to 8 oz. Assuming a complete flush. <---- CORRECT (The AC Delco "balancing" page tells you where to spread it around)
Agree ?
Thanks for the links BlackZ06
Last edited by BlackZ06; Apr 18, 2008 at 09:05 AM.
