'87 AC System
08-01-2010, 10:56 AM
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Model: Cherokee
'87 AC System
Let me see if I can get an answer on this.
Girlfriend has an 87 Cherokee. The original engine seized because of a catastrophic oil leak. Unfortunately it happened 2 weeks after the "cash for clunkers" so getting an older engine was out of the question. After a couple weeks of searching we obtained a 95 I6 with very low miles. After some converting it was in and has been running perfectly since.
Now that were toward the end of summer she wants her AC working. I tried to figure out if it was R-12 or R-134a with no avail. The tag on the compressor is too far faded to read. Which brings us to problem one. What should I look for (as far as previous retrofitting) to see if it is fact R-12 or R134a?
While looking for the refrigerant type I went ahead and hooked up my manifold low pressure side and found 0 psi (go figure). I was then going to proceed to pull a vacuum on the system when I found the connector on the high side of the compressor was smaller then the low side. I haven't put my caliper on it but I'm guessing its 3/8ths. My gauge manifold has r-134a connectors on it which brings me to my next question. Is this a sign of retrofitting or am I just missing something?
I don't have too much experience with AC systems seeing that my 88 doesn't have an ac system other then the compressor.
Girlfriend has an 87 Cherokee. The original engine seized because of a catastrophic oil leak. Unfortunately it happened 2 weeks after the "cash for clunkers" so getting an older engine was out of the question. After a couple weeks of searching we obtained a 95 I6 with very low miles. After some converting it was in and has been running perfectly since.
Now that were toward the end of summer she wants her AC working. I tried to figure out if it was R-12 or R-134a with no avail. The tag on the compressor is too far faded to read. Which brings us to problem one. What should I look for (as far as previous retrofitting) to see if it is fact R-12 or R134a?
While looking for the refrigerant type I went ahead and hooked up my manifold low pressure side and found 0 psi (go figure). I was then going to proceed to pull a vacuum on the system when I found the connector on the high side of the compressor was smaller then the low side. I haven't put my caliper on it but I'm guessing its 3/8ths. My gauge manifold has r-134a connectors on it which brings me to my next question. Is this a sign of retrofitting or am I just missing something?
I don't have too much experience with AC systems seeing that my 88 doesn't have an ac system other then the compressor.
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