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Old 01-04-2014, 06:39 AM   #31
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How much oil comes out if I'm just airing up tires and the occasional pool raft at the beach is there a need for the filter?

How did you mount yours I really don't want to spend the $300 on an ORO or kilby bracket.

I was reading about the different types of fittings on the Yorks. Which one is the best?

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Old 01-04-2014, 07:29 AM   #32
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Originally Posted by Medixtj01 View Post
How much oil comes out if I'm just airing up tires and the occasional pool raft at the beach is there a need for the filter? How did you mount yours I really don't want to spend the $300 on an ORO or kilby bracket. I was reading about the different types of fittings on the Yorks. Which one is the best?
Unfortunately kilby or ORO are really the only ones who make brackets (or used to make I guess in Kilby's case?). Apparently there used to be someone on eBay selling kilby clones, but I was never able to contact them. That being said, if you find someone else let us know; all I need is the bracket to complete my setup, and I wouldn't mind finding something cheaper.

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Old 01-04-2014, 07:47 AM   #33
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Have a York setup on my 98 sport and it also does the air lockers so needs a manifold

Manifold has pressure switch, control valve each air locker, pop off valve and hose in and hose out

Also has a tank underneath

Except for the brace the bracket is pretty much all right angles

The double pulley on the alt would not be too easy to make

Never had a filter and was apparently installed back in 98 along with the air lockers

When I first got this rig about 1.5 years ago I decided to pick up a spare York just in case. The compressors were plentiful on old volvos at you pull it they were the large CFM plus had the more desirable type fittings
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Old 01-04-2014, 09:54 AM   #34
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Originally Posted by Medixtj01 View Post
How much oil comes out if I'm just airing up tires and the occasional pool raft at the beach is there a need for the filter?

How did you mount yours I really don't want to spend the $300 on an ORO or kilby bracket.

I was reading about the different types of fittings on the Yorks. Which one is the best?
The best/easistport on top of a York is called a flange style where each flange style port is held onto the head with two bolts. However, with Kilby gone, it may not be easy to find new bolt-on replacement fittings for the head so you may have to get creative there.

Brad Kilby's wesite, whether or not you can still get parts from him, is still up at ::Kilby Enterprises:: and there is a ton of good reading there.

What I recommend is going through the below list of websites one-by-one where you'll soon figure out how to get a York installed & running. That's how I managed to figure out everything for mine.

How Tos : On Board Air : Jeeps Only Jeep site directory
Jon's Place/Jeep Page
On-Board Air - Compressor Identification
Onboard Air Engine Mounting kits
York Compressor for On-Board Air
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Old 01-04-2014, 02:07 PM   #35
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So I read the links and this is what I found out if I run a tank (since it isn't that expensive and relatively easy to mount) this is the diagram I made. Can someone please check my work and see if I missed anything.


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Also I still need mounting ideas since I trying to keep the budget down (I'm in high school) but found some plans to fab your own bracket on one of the links and am going to look into that farther to see what's involved in making one.

Is there an advantage of using the serpentine belt on the engine vs. an separate belt driven off a pulley mounted on another pulley on the serpentine belt. If that doesn't make sense here's a pic of a drawing that might help make sense of it.



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Sorry about my handwriting

Thanks for all the help
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Old 01-04-2014, 02:13 PM   #36
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You're missing a check valve after the York output.
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Old 01-04-2014, 02:25 PM   #37
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You're missing a check valve after the York output.
Thanks so I put in a check valve before the first split so the only thing on the closed side (where air can't get back into) is the compressor.

Do I need a way to release the pressure behind the check valve or if I empty the tank and other lines that part should empty too.

Can I put the pressure switch anywhere in the system after the check valve or dose it have to be on the tank
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Old 01-04-2014, 03:02 PM   #38
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No check valve is required for a belt driven compressor like the York. Check valves remove the back pressure from the compressor which is required for a smaller electric compressor so it can start up more easily against the pressure, but it's not needed for a heavy-duty belt driven compressor like the York.

The only time a check valve might be useful is to help keep pressure in an aux tank to prevent it from leaking out through the compressor. But it's not even often needed for even that. Without being run at all after its last use, my York OBA system would hold air pressure for literally weeks at a time without a check valve anywhere.

You'd also find that a permanent pressure gauge simply isn't needed other than some like them for their cool factor. If the compressor is running, it's not up to pressure yet. If the compressor isn't running, it's up to pressure.
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Old 01-04-2014, 03:06 PM   #39
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So no check valve but after I'm done should I still release the pressure in the tank/system before starting the York up. It probably will be empty most of the time when I'm driving around. I would only turn it on when I need it, let it build up pressure then use it then empty it.
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Old 01-04-2014, 03:16 PM   #40
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As I already said above, you don't need to worry about the York having any trouble starting up against air pressure. A big belt driven compressor like a York easily starts up against pressure, it's a complete 100% non-issue. Only when you have a small compressor like an electric can it have problems starting up against pressure where a check valve or automatic pressure dump valve would be needed.
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Old 01-04-2014, 03:17 PM   #41
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Ok so my plans above look fine then

And can I move the pressure switch anywhere in the system
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Old 01-04-2014, 03:32 PM   #42
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The pressure switch can be anywhere.
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Old 01-04-2014, 03:39 PM   #43
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Ok thank you
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Old 01-04-2014, 03:41 PM   #44
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A check valve is pretty cheap. If you're pulling from a junkyard you don't really know what kind of condition the York is in. You could get one like Jerry had that is in good condition and has good compression, or you could get one that's worn and could leak air out at a noticeable rate.
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Old 01-04-2014, 03:42 PM   #45
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For what is worth the OBA York kits used a check valve on compressor outflow here is a pic with midland part number
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Old 01-04-2014, 03:43 PM   #46
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Should have pressure switch and pressure relief valve and for simplicity of wiring nice if manifold with pressure switch is near ac clutch
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Old 01-04-2014, 03:44 PM   #47
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Another interesting thing the OBA kit did was use a medical fitting to York output see attached pic
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Old 01-04-2014, 03:49 PM   #48
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As to why v belt that is because the elec clutch on most salvage yard York compressors is already a v belt

The early tj 4.0 with ac above alt on left side of engine just need a double pulley on alt so current serp belt drives alt and alt pulley v portion drives York via v belt see pic

The newer tj with alt on top on left side used serp belt to drive add on york
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Old 01-04-2014, 03:51 PM   #49
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Digger where is the mounted in the system? EDIT Thanks for the park number

I planned on having a pressure switch and relief valve. I might put in a check valve since it isn't that hard.

Dose anyone do anything about the oil that comes out if the York?
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Old 01-04-2014, 03:51 PM   #50
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Can't read midland part number in pic it is

N-13526-D
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Old 01-04-2014, 04:00 PM   #51
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Dos anyone do anything about the oil that comes out if the York?
I considered it to be insignificant enough so I didn't worry about it. I never noticed any oil to speak of inside the tires when I would change them. You can always install a coalescing air filter if you want to. Brad Kilby had some cool setup where the York would automatically suck the oil back from the filter back into its sump. However, that really only happened enough to do that on Yorks that were mounted so they were laying on their side.

It was a non-issue for the York system I installed.
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Old 01-04-2014, 04:02 PM   #52
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I used a V belt and the dual pulley setup just like you. The problem I faced was finding a bracket. In the end my father and I created a custom bracket that relocated the alternator lower then its normal spot and replaced it with the york.
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Old 01-04-2014, 04:05 PM   #53
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Ya shoulda made two of those brackets so I could put a York into my '04 like you have lol. I'm less energetic with fabricating things like that now at 66 than when I installed the York into my '97 TJ back in 2000 or 2001.
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Old 01-04-2014, 04:17 PM   #54
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Ya shoulda made two of those brackets so I could put a York into my '04 like you have lol. I'm less energetic with fabricating things like that now at 66 than when I installed the York into my '97 TJ back in 2000 or 2001.
I was thinking about taking the bracket off and and recreating a couple exactly the same. Problem is, my dad had to go to the local U Pull to get a part off a old jaguar, the part was used to tighten the serpentine belt because the idler pulley was no longer being used. I have no idea where to find those parts or else id love to make a couple brackets.
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Old 01-04-2014, 04:21 PM   #55
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The check valve is right in the compressor output fitting the a flex hose to one end of the rectangular manifold and out other end to tank and rear bumper fitting on the bottom of the manifold are pressure switch and two elec valves one for each air locker and the pop off valve

The compressor input has a little air filter attached to it

The mounting bracket is T shaped in cross section but laid sideways with the horz base bolted to the two outboard mount locations on the factory ac compressor and the vertical portion with slot holes for mounting the york and slotted for tightening the York belt by raising the York
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Old 01-04-2014, 04:23 PM   #56
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As others said oil loss or oil into system has not been an issue but you should occasionally check level with welding rod dipstick thru base hole as listed on Jerry's comprehensive set of links
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Old 01-04-2014, 04:33 PM   #57
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If you'll be laying the York on it's side be mindful of the inlet/outlet orientation. Depending on what vehicle the York came out of the inlet/outlet will be on different sides. If you are laying the York on it's side you want the outlet on the top to minimize oil blow by.
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Old 01-04-2014, 04:35 PM   #58
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If you'll be laying the York on it's side be mindful of the inlet/outlet orientation. Depending on what vehicle the York came out of the inlet/outlet will be on different sides. If you are laying the York on it's side you want the outlet on the top to minimize oil blow by.
Have you ever actually installed a York into a TJ? I have never seen or heard of any Yorks in TJs mounted on their sides. I only brought up the sideways mount issue to speak of the oil issue's rarity.
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Old 01-04-2014, 04:38 PM   #59
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Jerry if I make on I'll send you the specs if you want to make one.

For mounting I was thinking of making a bracket to mount it on the passenger side of the engine then use a v belt to a pulley (not sure which one as it's 4 deg outside so I haven't looked yet).
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Old 01-04-2014, 04:50 PM   #60
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I used a short v-belt for my York but I was able to easily source the required dual-pulley for the alternator from Brad Kilby. That dual alternator pulley he used to sell made it a relatively painless job. Since Brad went out of business I dunno how you'd figure out where he got his dual alternator pulleys from.

It might be easier to convert the York to a serpentine belt pulley... though I'm not even sure where to get those now either. Too bad Brad had to go out of business, he sure made things a lot easier.
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