CJ A/C upgrade - JeepForum.com
 
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post #1 of 11 Old 02-22-2016, 04:49 PM Thread Starter
USMCCJ7Guy
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1986 CJ7 
 
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Cj CJ A/C upgrade

I have an 86 CJ with a 4.2L with the original a/c installed. I'm planning on upgrading the a/c to R-134 and have a few questions. Is there a parts list anywhere on the forums to replace everything from the firewall to the grill? I'm pretty sure the bearing in my a/c pulley is getting ready to go listening to the noise coming from it when the engine is running, hence my decision to just replace it all at once. While looking for the needed parts, I see a/c compressors listed for factory OR dealer installed a/c and with and w/o CA emissions. Is there a difference in the a/c compressor for dealer vs factory installed air? My compressor is set up for two v-belts. I appreciate the help on this. The forums have been a good source of info for the last few years as I've been working on my Jeep.

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post #2 of 11 Old 02-22-2016, 07:30 PM
Stumblebum
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Nostalgic A/C is a good source of Jeep A/C parts. I purchased a complete replacement kit for my CJ about five years ago. Components fit perfectly, virtually identical to OEM parts. They also sell the individual components, with good info on each one. I notice they only list YJ kits now though.

http://nostalgicac.com/complete-ac-k...lete-kits.html
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post #3 of 11 Old 02-23-2016, 05:26 AM
gmakra
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Converting from R-12 to 134A is simply a matter of replacing the refrigerant on automotive air conditioning units that have no rubber O rings or seals.
You are lucky you can simply swap the refrigerant since you most likely have a York compressor.
If your front bearing on your compressor is shot then you need to rebuild the compressor or get a rebuilt one since your system will not hold any freon.
Now having said all that you can do all the mechanical work, but since your asking these questions I assume you don't have a vacuum pump, tools or knowledge to recharge the system.
So once all the work is done see a pro to recharge the system.
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post #4 of 11 Old 02-23-2016, 05:49 AM
1949er
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If it's just a bearing in the compressor clutch they can be replaced or get a complete clutch , It could be a York 2 piston and that will need to be removed and drained/cleaned of oil or Sanden rotary style compressor that can be flushed , yes the hose seals will need to be replaced also the system flushed and the receiver/dryer replaced as you can't get the R12 oil out of it and R12 & 134A use different type of oil that won't mix together also you will need the 134A adapters for filling the system.
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post #5 of 11 Old 02-23-2016, 03:30 PM
scottyDive
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Is the noise coming from the ac unit or the idler pulley?

Scott
84 CJ7 258, 2150 TFI nuttered 2" shackle lift 33's
70 Jeepster Commando 225 HEI 3spd 2" lift
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post #6 of 11 Old 02-23-2016, 05:30 PM Thread Starter
USMCCJ7Guy
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Thanks for the info. The noise seems to be coming from the front of the a/c compressor, and I'm 90% sure its not the alternator. But before I buy parts, I'll pull the belts off and see if I hear anything when I move both pulleys. The mounting holes on one side of the compressor have broken from maintenance, before I purchased it so the belts aren't maintaining tension and will occasionally scream when I first start up the Jeep. Overall this sounds like a simple fix, just going to cost a bit of $.
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post #7 of 11 Old 02-23-2016, 09:06 PM
Badkisson
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1983 CJ7 
 
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if you have some extra vacuum hose or even rubber fuel line hose laying around cut about 4 feet of it and put one end of it to your ear and then put the other at the alternator or whereever until you hear the type of noise....that way you can almost pinpoint where the noise is coming from.
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post #8 of 11 Old 02-24-2016, 12:01 PM Thread Starter
USMCCJ7Guy
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Thanks Badkisson. I will try that and see if I can isolate the noise.
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post #9 of 11 Old 02-11-2017, 02:32 PM Thread Starter
USMCCJ7Guy
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1986 CJ7 
 
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I ended up upgrading the A/C with a kit from JeepAir. Works great. The old compressor was definitely shot.
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post #10 of 11 Old 02-11-2017, 07:39 PM
CSP
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It probably wasn't a York either, being an 86.
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post #11 of 11 Old 02-12-2017, 12:38 PM Thread Starter
USMCCJ7Guy
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Join Date: Aug 2013
Location: Sanford
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Pretty sure the one i bought was meant to replace a Sanden. My Jeep has the two V-belts pulley on the compressor.
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