A/C Compressor Replacement - Page 2

**Mean Max** · 07-12-2008, 08:43 PM

That's exactly the adapters I was talking about. They screw onto the R-134a fittings on the vehicle, so that R-12 equipment (like your vac pump) can be connected. Like I said, that was many years ago that I had a set of them, back when R-134a was first introduced.

MrTeeThyme · 07-13-2008, 10:23 AM

Sorry for the dumb questions and statements. I'm a little smarter today thanks to your help and patience. I ordered the drier today and decided to get the UV leak test kit.

I decided to check the system for a charge and there is no charge on it whatsoever. Is it still a necessary to take it to a Pro?

MrTeeThyme · 07-13-2008, 11:39 AM

Do I need to put oil in the compressor housing via the suction port before installing? AZ sold me a can than installs like the freon, but they couldn't find how much to put in. Also, I can't find the freon capacity in my Haynes.

**Mean Max** · 07-13-2008, 12:59 PM

Quote:

Originally Posted by MrTeeThyme

Do I need to put oil in the compressor housing via the suction port before installing? AZ sold me a can than installs like the freon, but they couldn't find how much to put in. Also, I can't find the freon capacity in my Haynes.

Well it does need oil, but too much will be as bad as not enough. I know that doesn't sound like much help, but I didn't know if you were aware of it.

I don't have A/C, so I don't know what kind of compressor yours has. Back in the old days I worked as a service tech for Volvo, and some of the vehicles used a York piston style compressor, and some used a rotary (Sankyo, I believe they were?) style compressor.

The York piston style that we used were mounted upright (I think some Jeeps use them laying on their sides?) and we actually had a dipstick that was inserted into the side of the compressor body to check the oil level.

The rotary style did not require checking the oil level in the compressor, but we did have to use one of the small diameter (1 5/8") cans of oil while recharging the system.

I would definitely research the oil level requirements, especially if you have the York style compressor.

Sorry I couldn't be of more specific help, but I hope that some of the general info that I can give you will help you find out the correct answers.

Please post up anything you find out, and your final results too.

NJeepyj91 · 07-13-2008, 02:46 PM

Here is a good link about ac and ac repairs.

http://www.aircoparts.com/1faq.htm. The Yorks and Tecumseh were used up till about 83 as I recall. Then the went to the rotory. You can find both types on line. Read up on the link and I'll look for the capacities for you in one of my service manuals.

**Mean Max** · 07-13-2008, 02:53 PM

For a visual reference,

Here is a York piston style compressor.

And here is a Sanden rotary style.

NJeepyj91 · 07-13-2008, 02:59 PM

I am at home today and won't have access to the manual I need until tomorrow. I do know maximum refrigerant charge for the system is no more 0.9kgs but that was for R-12 systems. Since yours has been converted, I need to look up capacities in a manual at work. I'll post tomorrow.

Your system is designed to use 1.75 lbs of 134a. High side pressure should not exceed 230 pounds. Best operation is between 210 to 220 pounds on the high side.

Max? Can I have that York style? I need OB air!

**Mean Max** · 07-13-2008, 03:13 PM

Quote:

Originally Posted by NJeepyj91

Max? Can I have that York style? I need OB air!

Ha-ha!!! I wish I could give it to ya pal! However, it ain't mine, it's just a pic I cobbed offa them thar innernets thingies!

NJeepyj91 · 07-13-2008, 03:27 PM

Hey, I tried. Everytime I visit a wrecking yard I forget to look for one of those.

One other thought for TeaTyme, If you are buying the new compressor, the ones I get are pre-oiled. I open the box, spin the shaft about 15 times and mount it. This done after vacuuming down the system and then removing the compressor. Vacuuming takes out refrigerant, but not the oil. To get the oil you have to system flush. There should be a notice in your box about the lube status of your compressor. 134a requires a synthetic sulpher free oil which is not compatible with R-12 systems.

MrTeeThyme · 07-13-2008, 04:49 PM

The compressor I got from AZ says it was shipped without oil. The oil instructions that came with it say it's dependent upon the type of compressor it is. Nowhere is there anything that says what type of compressor this one is other than a reman'd Ready Aire.

**Mean Max** · 07-13-2008, 04:54 PM

Which "type" does it look like? Using the pics I posted.

MrTeeThyme · 07-13-2008, 05:55 PM

It looks most like the Sanden rotary style without those ports on the top of it. Here is a link to the AZ site that lists mine.

http://www.autozone.com/R,APP173745/...ductDetail.htm

NJeepyj91 · 07-13-2008, 05:56 PM

Quote:

Originally Posted by MrTeeThyme

Sorry for the dumb questions and statements. I'm a little smarter today thanks to your help and patience. I ordered the drier today and decided to get the UV leak test kit.

I decided to check the system for a charge and there is no charge on it whatsoever. Is it still a necessary to take it to a Pro?

There are no dumb questions. Being a dummy is not asking the questions and spending more money.

or if you are so inclined

NJeepyj91 · 07-13-2008, 05:59 PM

It is the rotary type. The oil you need is for 134a non sulpher syn. The exact amount I cannot tell you until I get to work.

Maybe some internet research might do.

**Mean Max** · 07-13-2008, 06:05 PM

I found this, hope it helps.