How To: Rebuild your A/C compressor. Just in time for summer too.

Post by **wa-chiss** » Tue Jul 24, 2007 7:46 pm

O.K., I was experiencing some bad leaking problems in my A/C. We tried the stop leak system but it didn't work. I was changing my oil one day and while I was underneath the car I notices the sway-bar was soaking wet right under the compressor. So, I decided it was time for an overhaul or maybe even an R&R. I decided to take some pics and do a step by step on how to overhaul a compressor. I have the Nihon (yes spelling is correct) type: NVR 140S but others should be similar. Here we go

Now all thats left to do is replace all the rubber o-rings and seals. reassemble and enjoy a cold A/C.

Post by **churro** » Tue Jul 24, 2007 7:52 pm

yay for pics

Post by **slipstream_pnoy** » Tue Jul 24, 2007 7:58 pm

NICE JOB BRO,

Post by **wa-chiss** » Tue Jul 24, 2007 8:00 pm

thank you. That was my first time disassembling a compressor.

Post by **wa-chiss** » Tue Jul 24, 2007 8:27 pm

Does this qualify me for a custom title? Please please please

Post by **wa-chiss** » Wed Jul 25, 2007 7:02 am

Post by **Thaddeus** » Wed Jul 25, 2007 7:09 am

Thats one of the best put together "how to" write up I've seen in a while. Not really in time for summer but...

Post by **wa-chiss** » Wed Jul 25, 2007 7:26 am

true. But your in FL. It gets pretty hot sooner than here in WA. It just hit the 90's for a few days about 2 weeks ago. Now it's back into the low 80's. Thanks for the complements guys.

Post by **Bumnah** » Wed Jul 25, 2007 7:35 am

10/10 on how to quality.

great job.

Post by **wa-chiss** » Wed Jul 25, 2007 7:49 am

Post by **dickie** » Wed Jul 25, 2007 7:50 am

what do you want for your custom title?

and how is this just in time for summer? youre like a month late.

Post by **94_240sx** » Wed Jul 25, 2007 8:03 am

Awsome! I know how hard it is to wash your hands and take pics between the steps. Been there done that. I've never dealt with A/C system and thanks for sharing this. Now I know what to do.

Post by **wa-chiss** » Wed Jul 25, 2007 8:04 am

It's Washington State. It doesn't get that hot here. And when it does, it's way later than TX.

I would like my custom title to be

The Chosen One

Post by **wa-chiss** » Wed Jul 25, 2007 8:06 am

94_240sx wrote:Awsome! I know how hard it is to wash your hands and take pics between the steps. Been there done that. I've never dealt with A/C system and thanks for sharing this. Now I know what to do.

Thanks, I have a pair of mechanics gloved I used for the tear-down and took them off to take pics.

Post by **dickie** » Wed Jul 25, 2007 8:13 am

you should make note of that, or post it in the regional forums next time

Post by **wa-chiss** » Wed Jul 25, 2007 8:56 am

hey! You misspelled chosen. It says "The Cosen One" now. Is that fixable?

Post by **dickie** » Wed Jul 25, 2007 9:34 am

ah ****, a typo. sorry dude.

Post by **wa-chiss** » Wed Jul 25, 2007 6:59 pm

thats ok. I was like "SWEET!................wait..........NOOOOOOOOOO!"Thanks for fixing it. That would have sucked if you couldn't change it. People would be asking me what it ment.

Post by **lenso** » Mon Jul 30, 2007 3:31 am

Where can I get a set of the O-rings and seals?

Post by **jt15833** » Wed Aug 01, 2007 6:08 pm

^^^ i second this question

Post by **NotDave** » Thu Aug 02, 2007 6:02 am

so 'rebuilding' a compressor is just replacing the seals?

mine barely works and makes lots of noises (not from the belt)

how can you tell if its a mechanical failure?

Post by **180sxfaktory** » Thu Aug 02, 2007 6:52 am

Outstanding How-to!

Post by **240sxvaj** » Thu Aug 02, 2007 7:45 am

NICE!

Post by **ADF932** » Thu Aug 02, 2007 8:30 am

Nice Write up. Its easy to follow with all the pics . I wish i had an A/C working , I missing the condensor and the A/C lines. Went to four diffrent wrecking yards in my area and none of them had a 240 in stock. But once again great write up.
Modified by ADF932 at 11:56 AM 8/2/2007

Post by **Arashi** » Thu Aug 02, 2007 8:45 am

I've been without proper working A/C for quite a while and have been thinking about an overhaul to get it working again! My problem though is that it doesn't even engage, no light or anything... When I had something else done, I had a dealership take a look and just tell me what's wrong...

They said my A/C was just out of coolant or whatever and needed to be converted to be refilled, and that there wa a possibility that my compressor has a hole in it. How would I, following these steps, be able to tell if my compressor is even -working-?

Post by **wa-chiss** » Thu Aug 02, 2007 9:18 am

lenso wrote:Where can I get a set of the O-rings and seals?

The o-rings you can get at a parts store. They should have a box of different sizes you ca pick out of. As for the seal, I'm waiting on this company to e-mail me back I had looked through our catalogs at work and we can get a seal kit for every compressor but mine. Go figure.

NotDave wrote:so 'rebuilding' a compressor is just replacing the seals?

mine barely works and makes lots of noises (not from the belt)

how can you tell if its a mechanical failure?

It's probably just a bearing. You'd be better off just getting a reman'd compressor. Try to spin the compressor and feel for any rough spots. It's gonna feel like your turning your engine by hand. If there is a problem it might not spin all the way around but get stuck in a certain spot.

Arashi wrote:I've been without proper working A/C for quite a while and have been thinking about an overhaul to get it working again! My problem though is that it doesn't even engage, no light or anything... When I had something else done, I had a dealership take a look and just tell me what's wrong...

They said my A/C was just out of coolant or whatever and needed to be converted to be refilled, and that there wa a possibility that my compressor has a hole in it. How would I, following these steps, be able to tell if my compressor is even -working-?

If you look at my second picture, on the right hand side of the compressor, you'll see a sensor. Thats the pressure sensor. It senses if you have pressure inside the compressor and if it senses no or too little pressure it won't engage the clutch. It does that so you don't fry your compressor. Cause w/out freon, there's no way for the oil in the system to coat the moving parts. And I'm sure you know what happens to your engine w/out oil. It's the same w/ compressors. The best way to go about your problem is to just buy a retrofit kit (at your local parts store) for like $30. It comes with the R134A fittings that you just screw onto your existing R-12 fittins, 3 cans of R134a (which you'll probably only use like 2), the pressure gauge, and a step-by-step cd for your computer. When you "charge" your a/c, do it with the car running and the a/c on full blast (recurc too). The sensor should detect pressure and engage the clutch. Just fill to the propper pressure and enjoy cold a/c. If you hane a leak you will find traces of "oil" near the leak. The oil will look clear and it doesn't smell like motor oil. Kinda musty. Thats how I found my leak.

180sxfaktory wrote:Outstanding How-to!

240sxvaj wrote:NICE!

Thanks!

Post by **PantherRacer** » Thu Aug 02, 2007 9:47 am

Are the A/C lines the same on the 240SX and the 180SX? My A/C is missing the cold line. And a heater does not do me ANY good living in the Bahamas now does it?

If the compressor lines are the same could I get the part number for the cold line? And don't ask why I'm missing that one line, because I do not know.

Post by **ivorywhite240sx** » Thu Aug 02, 2007 10:09 am

just a little late for Cali, but nice stuff i like how you do it man...I went yesterday to nissan and guess how much for that dam ac unit $700.00 yep and thats not including taxes...I walk with a friendly face out the door staring at those 350z like dam $700.00 maybe I could use it to down a Z

Post by **wa-chiss** » Thu Aug 02, 2007 10:15 am

are all 180's rhd? If so no the would be different. Cause the a/c lines would enter the left side of the firewall. apposed to the right side for us lhd owners.

Post by **wa-chiss** » Thu Aug 02, 2007 10:18 am

ivorywhite240sx wrote:just a little late for Cali, but nice stuff i like how you do it man...I went yesterday to nissan and guess how much for that dam ac unit $700.00 yep and thats not including taxes...I walk with a friendly face out the door staring at those 350z like dam $700.00 maybe I could use it to down a Z

I did that same thing too. I even told the guy at the counter he was smokin crack. He said "but it's new not rebuilt" I said "it better suck me then f*** me for that price".

How To: Rebuild your A/C compressor. Just in time for summer too.

How To: Rebuild your A/C compressor. Just in time for summer too.

Re: How To: Rebuild your A/C compressor. Just in time for summer too. (wa-chiss)

Re: How To: Rebuild your A/C compressor. Just in time for summer too. (wa-chiss)

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Re: How To: Rebuild your A/C compressor. Ju ... (wa-chiss)

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Re: How To: Rebuild your A/C compressor. Just in time for summer too. (Thaddeus)

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Re: How To: Rebuild your A/C compressor. Just in time for summer too. (Bumnah)

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