York On Board Air Compressor Install

joe98tj

Moderator
So a few months back I picked up a York 210 Compressor. Here's how I made it work for my jeep:

Here is a write up thread from a guy installing with a kilby bracket, he also goes the extra mile installing a cooler line:
https://wranglertjforum.com/threads/york-oba-installation-w-oro-bracket-and-ac-and-durango-alt.9691/

So when I got it, it was wicked dirty and covered in grease. I spent a few days with a wire brush just cleaning the outside. I noticed the gaskets looked old so I removed the two heads and the gaskets were rock solid and stuck to the heads. After a lot of time scraping and some wire wheel action I finally got the heads clean. I also had to clean out the air chambers. I removed the bottom cover to see how the internals were. Not much oil but everything looked ok. I bought a gasket kit off ebay for 20 bucks. Once those came in I reassembled the unit and sprayed it black. I used 12 ounces of ATF. Some run ATF, some run 10w30. I had ATF on hand so I'll go with that.

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One thing I changed with the head was swapping the suction and discharge. There are holes in the two heads for two pins to align the heads and gaskets and position the heads so that the suction and discharge are on specific sides. However, if you look at the unit, the chambers are identical aside from which side a hole is drilled for an oil port which I'll get to in a minute. So, if you just don't install the pins you can rotate the heads 180 so your suction and discharged are now swapped. My suction is now on the right instead of the left where it was designed to be as an AC unit. A guy on youtube said he runs his like this and has experienced no issues so good enough for me.

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Depending on which side is the discharge, there is an oil port that goes from the pulley area to the air chamber. I followed the detailed write up below to plug the port. However, Isaw someone in the comments used an 8/32 tap which required no drilling, just tapping the hole so I went with that. Would recommend doing this with the head removed so you can blow the hole out with some air. I cut the head off a screw I had and put a slit in it for a flat head. Some red loc tite and bolted it all up.

https://www.jedi.com/york-air-oil-mod/

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The unit I got only had one rotolock fitting on it. I didn't know too much about these fittings so I didn't trust the internet since they all looked different and no website would spec out thread sizes. For the discharge side I drill and tapped the inside hole to fit a 3/8" npt fitting. I used a 6 port discharge block with a quick connect, 90-115 psi switch, and 150 psi pressure switch. Two other ports are blocked off, might run a hose to front grill, IDK yet.

I purchased this pulley/clutch.
https://www.partdeal.com/hvac/compressors-and-clutches/hvac-clutches-for-heavy-duty-vehicles/omega-york-210-clutch-12v-with-147mm-clutch-diameter-22-11114-am.html?utm_source=google&utm_medium=cpc&adpos=&scid=scplp77289562&sc_intid=77289562&gclid=CjwKCAiA-_L9BRBQEiwA-bm5fsJQ5gJh7BTTJ_ih3YCTg4wXE8fNYOH7wlB6G3vdlsaLfIGf8EJC7xoCd4sQAvD_BwE

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So the rest of this thread will be 'Does Joe have the patience to correctly align the unit so the pulley it perfect'

If someone didn't want to fab their own bracket or even go through this process, this company makes full kits and brackets.
https://www.cuoffroad.com/product-lines/onboardair-com-bracket-kits/jeep-bracket-kits/

I finally got the time to go out to the jeep today and see how it lines up. Looks like I'll have more room to run the lines forward instead of backwards. Looks like I can use a flat plate to mount to the A/C bracket, bolt to the underside on the left side of the york and run a side plate to the right side of the york.

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Well I was looking through the TJ forum and find out today there are folks out there using stock AC units and turning them into compressors...

https://wranglertjforum.com/threads/on-board-air-conversion-of-stock-jeep-wrangler-tj-a-c-system.3672/#post-749271

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Red Rocker said:
Are you going to need an extra idler pulley like in the write up you referenced ?

Belt dynamics are not my specialty. I would imagine that extra idler has something to do with the relocation of the factory tensioner.
 
Your going to need another idler pulley so the belt wraps around the pulleys far enough that it won't slip when under load
 
Chubby Thumbs said:
Yep, although, I believe the York will be MUCH more reliable and powerful!
In the write up I posted one guy gives his time for airing up tires. Not bad but it seems a bit more involved than doing the york
 
Nice wright up Joe!  Many years ago I bought a couple York compressors from Ryan Mitchell (now Sherwood Fab) - If I remember I gave Alan one of the York compressors

Back then I was going to mount one on my YJ where the AC compressor used to go and use the Kilby mounting plate and pulleys that used a v-belt for the compressor and a hybrid serpentine / V-Belt pully for the alternator.  That way I could use the stock serpentine belt and if the compressor locked up I could just cut the V-belt

 
Very cool write up. Where did you find the York and are they common.  I love the idea of an onboard compressor that can run tools
 
The york was sourced from a local hoarder.  If you know what vehicle they came in you could try searching boneyards
 
Cool.  I always thought it was a neat idea.

Also, my major take away is that Joe has a TV near his workbench.  That’s living the dream.


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Horn said:
Cool.  I always thought it was a neat idea.

Also, my major take away is that Joe has a TV near his workbench.  That’s living the dream.


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TV makes the hideaway room a little more entertaining.
 
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