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on-board air system

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Firedawg77, Jan 31, 2002.

  1. Firedawg77

    Firedawg77 Newbie

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    My Jimmy that I've owned for 3 yrs now has the stock A/C pump which I've never used. Therefore, I'm going to convert it into an air compressor w/ a stroage tank mounted somewhere. My big question is how do I lubricate the pump? Or does it have an internal oil lubrication system of some kind? I'm thinking I will use a small air tank from a truck w/ air brakes or a small tank from a portable air compressor. Does anyone have any suggestions? Anyone want to tell me/us how they did it?

    77' Jimmy High Sierra
     
  2. chevyfumes

    chevyfumes Court jester

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    Watch for the muzzleflash!
    no such thing not possible[​IMG]

    <font color=blue> I'd rather have a bottle in front of me, than a frontal lobotomy!
     
  3. Firedawg77

    Firedawg77 Newbie

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    What do you mean "No such thing, not possible"? I've heard of this being done on several different rigs. It's a pump, so I don't get what you're saying?

    77' Jimmy High Sierra
     
  4. Resurrection_Joe

    Resurrection_Joe 1 ton status

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    I bet hes being goofy. Anyway, yeah Im gonna try and do the exact same thing. I've never used mine either, belts off and wires are loose. I believe (not sure) that only York air compressors have a oil resivoir. Im gonna try and use my stock one and just lube it up good before every hard use. Good luck.

    Here's some links -

    http://www.huv.com/jon/jeep/Air/assembly.html

    1978 K20 - 355ci, np205, th400, D44, 14F, 7" of Lift, 36 x 14.5 TSL Radial
     
  5. MR.GADGET

    MR.GADGET Registered Member

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    The pump you need is called a York pump it uses an oil bath much like a motor to lube it your (if not a york type ) uses the coolent to lube it and will go south quick!!!!!!!! My friend tryed a york and has 250 plus in it and it still does not work he used parts from 2 pumps and had to get some new parts!!!!!!!! Try CO2 or a Quick Air 2 I have both and love them the Quick Air 2 is used for tires 4 33x12.5 from 15psi to 35psi in 12-14 min with no tank and Power tanks are used for tools or when filling up in the rain 4 33x12.5 from 15psi to 35psi in 4-5 min My 2c Jon

    IF IT'S NOT AS BIG AS YOU ARE DRIVE OVER IT!!!!!!!!!!
     
  6. Blazin Obsession

    Blazin Obsession Registered Member

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    My first onboard air set up used the stock pancake pump and a truck air tank mounted behind the front bumper. It did work for several months but not having a proper supply of lube,, siezed it up. If you only used it for filling tires off road and put motor oil in the air inlet before each five minutes of use, you may be lucky and have it work for a long time.You will also require a regulator to shut off the pump when the desired pressure is reached. You can get one of these at any industrial supplier for 20 bucks ,,, a pressure guage would also be good. I am using a York pump now and it works much faster and has its own oil reserve,,, but these things are huge and take some imagination for brackets. a picture of mine is at
    http://www.blazinobsession.com/web files/air-compressor-2.jpg
    hope I was of some help.
    Ken

    <a target="_blank" href=http://www.blazinobsession.com/>http://www.blazinobsession.com/</a>
     
  7. holyjohnson

    holyjohnson Registered Member

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    http://coloradok5.com/york.shtml
    try that link,if it doesnt work goto the technical section and its in there,personally id save my money and go with a quick-air type easier then finding the right compressor or making the right bracket and would probably last longer.goodluck

    "well,are you gonna pull them pistols,or whistle dixie!?"
     
  8. Corey-88K5

    Corey-88K5 1/2 ton status

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    It seems that there is a lot of misunderstanding and lack of actual knowledge when it comes to this issue. Is York your only choice? No, is it better than the stock GM A/C Compressor? Depends on your taste. The GM Stock A/C would work great, you just have to set the truck up for it. People will tell you that you will have to oil the compressor all the time, thats not true either. Granted, in its stock application, the coolant has oil that keeps the compressor in oil all the time, but when using it as an air pump, it does not have this feature anylonger due to pulling air vs. from a sealed environment. Now, what do you do? THis is actually very simple. You put on an "oiler" in the inlet, and a "de-oiler" on the output, and make that a mini-system. The oil is then cycled through the pump like the original system, but very little oil goes past the de-oiler. On an occasion you will need to add a little oil to the system. The benifit of this is all the brackets are already setup!

    Here is the link to my site with some information.

    http://www.geocities.com/Baja/Trails/7252/onboardair.htm

    I'd also suggest going to dogpile.com and doing a search on "onboard air" There is a link (obiwan something or another) he has a large ammount of links that would supply information.

    HOpe this helps.

    Corey

    [​IMG]<font color=red>Girls Like Guys In Bow Ties
    <a target="_blank" href=http://www.geocities.com/corey_perez>http://www.geocities.com/corey_perez</a>
     
  9. 73k5blazer

    73k5blazer Unplug the matrix cable from the back of your head Premium Member

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    I'm in aggreement with corey-88k5. This is very possible and works good. You just need to add the oiling system to it, as he describes. I also have an article I saved from a mid '90's issue of one of the 4x4 mags that outlines all the details The regulator is a must and they also say that the older long cylinder style is much better and much more durable for an air application than the newer '80's style short cylinder type.
     
  10. therobzilla

    therobzilla 1/2 ton status

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    I used a stock Rotary type compressor from a Dodge Karavan and designed some custom brackets, I add about 2 oz of oil to the intake about every 2 trip, works great and runs tools with no problem. I have pictures of the setup on at this link.

    Check it out.

    <a target="_blank" href=http://coloradok5.com/gallery/Robzilla-Photos>http://coloradok5.com/gallery/Robzilla-Photos</a>

    Rob
     
  11. chevyfumes

    chevyfumes Court jester

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    Yeah just messin with ya, This has always been a hot topic and I thought I'd just try and keep the post up top til somebody gave in with the info and clicky to the write ups, plus I'm just a smart ass... [​IMG][​IMG]

    <font color=blue> I'd rather have a bottle in front of me, than a frontal lobotomy!
     
  12. Corey 78K5

    Corey 78K5 1 ton status

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    Dude you stole my tanks! You have the same tanks and they're located in the same place except I used straps like on a gas tank to mount mine. Also as far as the pully/belt set up I did the same only I used a stock Chevy AC pump the long style. For the double pully on the alternator I used one off of a 75 Scout they used Delco alternators so it bolted right up. I fabed my own brackets and mounted it next to the alternator on the pasenger side so when you look at my engine bay it looks like I have two AC units. For the oil and inlet air I taped a hole in the bottom of the air cleaner dish and ran a piece of 5/8 fuel line to from the air pump to the air cleaner dish for air and in the middle I spliced in a little connector that has a twist on cap like on a bottle that I can unscrew and add some oil I just add a little Marvel mystery oil when I use it.
    Corey 78K5
     

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