mudbuggy
1/2 ton status
Smart man, I gotta learn how to quote, and upload pics
CK5
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A/C Delete - York Install
- Thread starter scottystills
- Start date
scottystills
1/2 ton status
Smart man, I gotta learn how to quote, and upload pics
lol! Email sent...
mudbuggy
1/2 ton status
reply
replied - at least we can get a good post count going lol!
replied - at least we can get a good post count going lol!
Fingerless
1/2 ton status
Ok So Wheres the post on what components are needed to hook up the compressor for OBA?
Tried the search But it dosnt like me. Or im not using the correct terms. it didnt like "OBA".
Tried the search But it dosnt like me. Or im not using the correct terms. it didnt like "OBA".
mudbuggy
1/2 ton status
What compressor do you have under your hood now?
scottystills
1/2 ton status
Ok, well didn't get anything done yesterday - dark by the time I got home. Tonight I got most of the lines out and tested the clutch on the compressor. Works! Thankfully...
This is the inlet/outlet assembly taken off the back of the compressor. The inlet is going to get finished with a 3/8" hose barb, to which I'll attach a little breather filter. The outlet is going to get a female 1/2 NPT fitting that I can tie a air line to, send it down to the tank that I'll connect to through a check valve.
These are the wonderful air tanks I grabbed today at a semi truck salvage yard! Very happy with these suckers. They're about 24" long and about 9" diameter, 5 gal tanks. Might be a bit big to fit on the underside but I'll investigate that more tomorrow. The plus side, they're aluminum, and only weigh about 3lbs each! Not shabby. Two tanks for $30, and guaranteed no leaks, rated for 200psi (but I'll limit to 140-150). Excellent score. Although I thought it was a good idea to go to the wrecker on the way home from the office, and ended up wandering through piles of scrapped semi parts in a suit. Not one of my finer moments, and got a lot of heckling form the staff and other customers. Next time, going to home to change first.
This is the inlet/outlet assembly taken off the back of the compressor. The inlet is going to get finished with a 3/8" hose barb, to which I'll attach a little breather filter. The outlet is going to get a female 1/2 NPT fitting that I can tie a air line to, send it down to the tank that I'll connect to through a check valve.
These are the wonderful air tanks I grabbed today at a semi truck salvage yard! Very happy with these suckers. They're about 24" long and about 9" diameter, 5 gal tanks. Might be a bit big to fit on the underside but I'll investigate that more tomorrow. The plus side, they're aluminum, and only weigh about 3lbs each! Not shabby. Two tanks for $30, and guaranteed no leaks, rated for 200psi (but I'll limit to 140-150). Excellent score. Although I thought it was a good idea to go to the wrecker on the way home from the office, and ended up wandering through piles of scrapped semi parts in a suit. Not one of my finer moments, and got a lot of heckling form the staff and other customers. Next time, going to home to change first.
owenst7
1/2 ton status
If it suits your needs better, I tapped the back of my A6 for 1/2" NPT. There is enough meat there if that works better for you. 
scottystills
1/2 ton status
If it suits your needs better, I tapped the back of my A6 for 1/2" NPT. There is enough meat there if that works better for you.
I thought about this actually, but figured the less I have to touch on the seal the better. The hose/fitting shop I go to should be able to slap fittings on here pretty easily. I'm scared of leaks!
owenst7
1/2 ton status
The a6 just has an o ring under the head, should be pretty easy to replace. Mine was old and I was lazy, so I just used rtv lol. Its been holding up fine though for quite some time now. I figured it was just the oba so I wasn't too concerned if I had to redo it.
blazenbaja_67
1/2 ton status
This is what I was just thinking about doing to mine,Subscribed
scottystills
1/2 ton status
Ya I think my o ring's still there (haven't looked, am trying to do this all without actually pulling the compressor) but either way I think I'm going to reinforce it with some rtv.
The fittings place I usually go to for my oil lines and other generic NPT stuff didn't have a compression sleeve to fit over the outlet line, seems it's a size specific to A/C applications. I've got a mobile air conditioning guy coming over to take a look at it right now to get a fitting put on, he doesn't think it'll be a problem. I'll keep you posted.
scottystills
1/2 ton status
Well the HVAC guy has come and gone. He's going to fix up the hard lines so I can have a breather coming off the input and a 1/2 NPT coming off the input so I'm all fixed up. Late in the afternoon and a long weekend up here though, so I'm going to hear back from him on Monday or Tuesday. Small price to pay to have it done right though!
Updates to come after the weekend, unless I get around to starting to mount the tanks/lines this weekend.
Updates to come after the weekend, unless I get around to starting to mount the tanks/lines this weekend.
scottystills
1/2 ton status
Sorry for the delay! Warm weather came around and started melting the snow. Unfortunately for me my back alley drains into the dug out area where I was supposed to have a garage pad last fall - didn't beat the snow. Had to wait for the ground to dry up before I could get any work done. On a side note, also found out that I had a dead starter, so that threw a little wrench into the plans today!
Anyway, so didn't go with the HVAC guy, but soldered some 1/2" NPT hose barbs over trimmed hardlines.
Remounted the input/output onto the compressor with an F-F collar and a 1/2" NPT 90 elbow and ran a 1/2" air hose out the side.
On the tank I've mounted a check valve and another 90 elbow on the one side (just to fit how I'm going to run the hose)
And on the other side which I'll be able to see from the driver's seat once it's mounted, a basic pressure gauge.
Now unfortunately, running it with just the check valve I've noticed that the valve only opens when the RPMs go up a pretty good amount; I'm not sure how much help that would be on a trail that I'm really not revving the engine the whole time anyway, or if I'm working on something I'm obviously not going to be running down the highway and it'll be a pain in the ass to have someone gassing it the whole time.
I set this up (running the hose out my hood and through the open driver's window with the tank on the passenger seat - safety first!) and took a spin around the block, then down the hwy a bit and back to my place. No pressure! Granted I do have a 150psi relief valve on there and there is pressure when I manually release. Not enough to register though...
I'm wondering if my compressor is just pooched. It is sucking some air in and pushing some out, but not under a great deal of pressure.
Thoughts?
Edit: Wondering if the clutch might just be slipping?
Anyway, so didn't go with the HVAC guy, but soldered some 1/2" NPT hose barbs over trimmed hardlines.
Remounted the input/output onto the compressor with an F-F collar and a 1/2" NPT 90 elbow and ran a 1/2" air hose out the side.
On the tank I've mounted a check valve and another 90 elbow on the one side (just to fit how I'm going to run the hose)
And on the other side which I'll be able to see from the driver's seat once it's mounted, a basic pressure gauge.
Now unfortunately, running it with just the check valve I've noticed that the valve only opens when the RPMs go up a pretty good amount; I'm not sure how much help that would be on a trail that I'm really not revving the engine the whole time anyway, or if I'm working on something I'm obviously not going to be running down the highway and it'll be a pain in the ass to have someone gassing it the whole time.
I set this up (running the hose out my hood and through the open driver's window with the tank on the passenger seat - safety first!) and took a spin around the block, then down the hwy a bit and back to my place. No pressure! Granted I do have a 150psi relief valve on there and there is pressure when I manually release. Not enough to register though...
I'm wondering if my compressor is just pooched. It is sucking some air in and pushing some out, but not under a great deal of pressure.
Thoughts?
Edit: Wondering if the clutch might just be slipping?
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mudbuggy
1/2 ton status
Sure you have your supply going to the tank and not to the intake?
Make contact with the clutch with 12 volts the clutch should 'click'. Then at idle you should be able to put your finger over the lines, you'll then be able to figure out intake and supply to tank from there.
Have you added any oil?
All of the above should be done at idle.
Mine will fill a 5 gallon tank at idle less then 3 minutes @ 150 psi.
Make contact with the clutch with 12 volts the clutch should 'click'. Then at idle you should be able to put your finger over the lines, you'll then be able to figure out intake and supply to tank from there.
Have you added any oil?
All of the above should be done at idle.
Mine will fill a 5 gallon tank at idle less then 3 minutes @ 150 psi.
scottystills
1/2 ton status
Yep it's set up the right way. I've got suction at the one and and it's blowing air, just not very much. The clutch is engaging, I'm not sure how it works though would it be able to slip? Ie not be turning the compressor as fast as the belt it turning the pulley? It's either that or the compressor's phooey.
I'm going to take a look at it this afternoon once I get home from the office and check every link, pull the compressor and give it a good once over.
And yes, added some oil to the intake at idle, didn't have any problems.
mudbuggy
1/2 ton status
Figured now is a good time have a smoke before I go back to tigging up new body xmbrs.
You ideally need a one way vale between the tank and compressor. To keep the air in the tank so the other piece can allow the compressor to start with no load
An unloader valve it dumps the line pressure between the compressor and the one way valve to allow the compressor to cycle and not stall out.
Don't be afraid to dump oil into the intake especially if its been unsealed for a while around moisture.
Back to tigging
You ideally need a one way vale between the tank and compressor. To keep the air in the tank so the other piece can allow the compressor to start with no load
An unloader valve it dumps the line pressure between the compressor and the one way valve to allow the compressor to cycle and not stall out.
Don't be afraid to dump oil into the intake especially if its been unsealed for a while around moisture.
Back to tigging
scottystills
1/2 ton status
Yep I've got a tank mounted check valve. On the third picture you'll see it directly mounted to the tank between it and the elbow.
Unloader valve you say... There's a 1/8" NPT threaded hole on the check valve, you can just see it from a side view where I've sealed it with a plug. I'm guessing that's where my unloader valve should be?
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mudbuggy
1/2 ton status
Mine goes compressor unloaded one way then tank. I got only individuial parts to run mine
Remember the compressor is dumb, it only knows off and on. If its in good shape it will overcome the one way vale and push air into the tank (depending on other items but for this example I'll dumb it down for simplicity). Without the unloader And the one way valve the pump can not over come the pressure in the tank and inline to 'cycle or spin' to create pressure without those other pieces
Nope can't see photos I'm on my pda and I haven't taken the time. I will when I get home.
Remember the compressor is dumb, it only knows off and on. If its in good shape it will overcome the one way vale and push air into the tank (depending on other items but for this example I'll dumb it down for simplicity). Without the unloader And the one way valve the pump can not over come the pressure in the tank and inline to 'cycle or spin' to create pressure without those other pieces
Nope can't see photos I'm on my pda and I haven't taken the time. I will when I get home.
mudbuggy
1/2 ton status
ok Im home now and got to check out you chit.
when you say that the clutch doesn't spin as fast as the pulley, what is it doing? is it clicking or just slipping. The clutch is an electromangnetic clutch, like on a riding mower deck, when you put power to it, it engages. I can't remember if it is adjustable or not, but before messing with it I would get the unloader valve installed and give that a shot first. From what it sounds like to me, is that there is to much pressure above the piston to cycle and it is locking up and slipping the clutch.
When I tested mine I had a surplus electic motor that I installed a pulley onto and mounted it onto a table. Mounted the compressor on another table and spaced the tables to get the belt to the correct tension. Then I put jumper cables onto the motor and the battery. It took less then 3 minutes for my air tank to unload at 150 psi with a 5 gallon tank. Granted it wasn't mounted on the truck, so yours will probably fill even faster then mine.
this might help
http://www.about-air-compressors.com/unloadervalve.html
Yep it's set up the right way. I've got suction at the one and and it's blowing air, just not very much. The clutch is engaging, I'm not sure how it works though would it be able to slip? Ie not be turning the compressor as fast as the belt it turning the pulley? It's either that or the compressor's phooey.
I'm going to take a look at it this afternoon once I get home from the office and check every link, pull the compressor and give it a good once over.
And yes, added some oil to the intake at idle, didn't have any problems.
when you say that the clutch doesn't spin as fast as the pulley, what is it doing? is it clicking or just slipping. The clutch is an electromangnetic clutch, like on a riding mower deck, when you put power to it, it engages. I can't remember if it is adjustable or not, but before messing with it I would get the unloader valve installed and give that a shot first. From what it sounds like to me, is that there is to much pressure above the piston to cycle and it is locking up and slipping the clutch.
When I tested mine I had a surplus electic motor that I installed a pulley onto and mounted it onto a table. Mounted the compressor on another table and spaced the tables to get the belt to the correct tension. Then I put jumper cables onto the motor and the battery. It took less then 3 minutes for my air tank to unload at 150 psi with a 5 gallon tank. Granted it wasn't mounted on the truck, so yours will probably fill even faster then mine.
this might help
http://www.about-air-compressors.com/unloadervalve.html
Yep it's set up the right way. I've got suction at the one and and it's blowing air, just not very much. The clutch is engaging, I'm not sure how it works though would it be able to slip? Ie not be turning the compressor as fast as the belt it turning the pulley? It's either that or the compressor's phooey.
I'm going to take a look at it this afternoon once I get home from the office and check every link, pull the compressor and give it a good once over.
And yes, added some oil to the intake at idle, didn't have any problems.
scottystills
1/2 ton status
Well I tried to grab an unloader on the way home from work tonight but princess auto was of course, sold out. Anybody happen to know where in Calgary I could find these types of components other than PA? We've got so much oilfield supply here that when you do a search all you get is industrial applications...
Anyway did some reading on it in the meantime, and is it entirely necessary? I understand that it would make it start up more efficiently, but on a belt driven compressor I would think that it's got more than enough torque to get it moving. Going to head out shortly and check over all my connections, see if I've missed something. If not, I'll head to the wrecker later in the week and see if I can find something there.
Anyway did some reading on it in the meantime, and is it entirely necessary? I understand that it would make it start up more efficiently, but on a belt driven compressor I would think that it's got more than enough torque to get it moving. Going to head out shortly and check over all my connections, see if I've missed something. If not, I'll head to the wrecker later in the week and see if I can find something there.
