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Tractor Talk Discussion Forum

Finnally broke down and put air compressior on

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old

04-17-2005 12:14:09




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Got tired of not have a compresser on my truck so I broke down and built a system that works well. I used an old ford type ac compressor and an old gas water heater tank 40 gal. Takes a few minutes to get up enough preassure to run my inpact gun but it does get up there. Sure is nice to have air under the hood of my hauling truck.




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Greg Co

04-18-2005 10:35:47




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
We have put air on trucks doing similar things. Those old AC compressors work good for that and it sure is handy to have.

I would have to agree though that using a hot water tank for storage is risky. When they are new they may work but as they age they get thin and you don’t know when or where they are going to split.
I personally know of a man that was killed when a tank split. He was filling a small portable tank that had rusted thin. He was bent over it and when it split it hit him square in the face and chest then picked him up off the ground and sent him into rafters of his garage killing him instantly. The tank only had 40 to 50 lbs of pressure in it at the time it let go. I could just imagine the force that 150 would have.

I like your idea but would seriously consider a better tank. Just don’t want to read about you in the papers.

Greg F.

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idontno

04-18-2005 06:15:27




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
R.I.P..... ..... ..... ..... ..... ...idontno



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idontno

04-19-2005 03:39:47




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 Re: Finnally broke down and put air compressior on in reply to idontno, 04-18-2005 06:15:27  
Sorry I wasn't trying to be a smartxss. If ur tank isn't new..It could be rusted.I had a good friend(who is dead now)because of a bad tank.It took the top of his head off.(eyes up). 21 years old.Tell his family ....it was a safe tank..... ...He never knew what life was.Thank god it took him quick.I have pictures if I can find them that the insurance company took.If I find them I will post them.They had to rebuild the whole side of the shop where the tank was sitting..... ....R.I.P.... idontno

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old

04-18-2005 08:10:43




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 Re: Finnally broke down and put air compressior on in reply to idontno, 04-18-2005 06:15:27  
Water heater tanks are preassure test for 300psi, its also the same system that I have used for more then 10 years. It does have 3 saftys on it by the way.



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Don L C

04-17-2005 20:29:46




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
What you are doing worries me.....I worked in a area one time making pressure vessels..... The welders that welded on them and the guys that tested the tanks ,would tell you ,no way !!!
Water heater tanks are usually glass lined....when they age water gets through to the metal skin,and thats about all it is.....what you don't know is the rust condition inside.....that tank is a accident waiting to happen,GET RID OF IT

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Don L C

04-17-2005 20:40:38




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 Re: Finnally broke down and put air compressior on in reply to Don L C, 04-17-2005 20:29:46  
My friend, you have built a bomb ....get it out of service as soon and as safe as you can.....



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old

04-17-2005 20:51:47




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 Re: Finnally broke down and put air compressior on in reply to Don L C, 04-17-2005 20:40:38  
sort of funny I have used it for more then 10 years as of now. Also I have a few safty things in the system, 1 foot of copper pipe which should go before the steel tank and also I use rubber hose from the compressor to the tank.



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knauffj

04-17-2005 17:29:42




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
How do you plumb the ac compressor? I have an ac compressor from a Ford 9700 tractor that I was thinking of putting in my truck(mounts really easy). How does the wiring work so that the electronic clutch disengages when the tank is full? This all may be a dumb question to some, but would rather know what works before trying something that doesn't.



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old

04-17-2005 20:56:05




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 Re: Finnally broke down and put air compressior on in reply to knauffj, 04-17-2005 17:29:42  
I use a pop off valve so when it gets to 150 psi it pops, I only use it a little for airing up tires and running air tools other wise its just there if and when I need air. As far as the plumping you have to find out which is in let and which is the preassure side, hook the preassure side to the tank and leave the other side open to the air. An air filter is a good idea but I don't use one but probably should

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Gene Davis (GA)

04-17-2005 19:00:28




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 Re: Finnally broke down and put air compressior on in reply to knauffj, 04-17-2005 17:29:42  
All you would have to do to make the compressor stop when tank filled to capacity would be put a regular air compresser switch in the line to interrupt the current flow to the compressor clutch. How ever it may require a solenoid to keep from burning the pressure switch contacts.



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Ohio-Bob

04-17-2005 15:49:53




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
Please!!!!! do away with that water heater tank now, as it will not hold the air pressure required of an air compressor, I did the same thing until i found this information out. I used an air starter tank off of a Semi truck, and it will hold up to 600 PSI. Please correct this operation before someone gets hurt or killed.



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old

04-17-2005 16:07:10




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 Re: Finnally broke down and put air compressior on in reply to Ohio-Bob, 04-17-2005 15:49:53  
Those tanks are preassure tested to 300 psi and it has a pop off that is set at 150. This system is the same one I had on my last truck all I did was move it from the old one to the new one.



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Gene Davis (GA)

04-17-2005 13:28:10




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
Used to run a company daily grease/service truck and I connected the truck air brake system together to the service body compressor system. Controlled it with a solonoid in the line wired to a switch in the cab, so that while traveling to the jobsite the excess capacity of the truck air brake compressor went to my service body compressor and I always had air ready, and if more was needed than the truck system could supply, just cranked up the service compressor. and if the truck brake compressor failed, i could still have brakes from the service body compressor and had a valve to seperate the systems if one or the other filed. Worked real nice and speeded up the jobs. The truck was always running at the jobsite and the compressor was going to turn anyway, so I just made use of it. Gene Davis

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wayne2

04-17-2005 12:32:24




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 Re: Finnally broke down and put air compressior on in reply to old, 04-17-2005 12:14:09  
Great!! I once hurt my back w/tire pump(LOL)



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37 chief

04-17-2005 20:51:05




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 Re: Finnally broke down and put air compressior on in reply to wayne2, 04-17-2005 12:32:24  
Growing up on the farm in the 50's, and 60's we didn't have acompressed air at all. I think it took about 200 strokes with a tire pump, to pump up a car tire, and a hole lot more to pump the rear tire on Dad's F 12. I tried one time to use the vent valve on the butaine tank to blow up the tire on my 34 chevy, big mistake. The tire being a little rotten, and too much pressure it popped right where I was nealing. If you think getting hit in the tender parts with a ball hurts, consider getting hit with a piece of flying rubber. I thought I lost them. Stan in Calif

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Chris Vangel

04-18-2005 09:33:43




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 Re: Finnally broke down and put air compressior on in reply to 37 chief, 04-17-2005 20:51:05  
Nobody has said it so I will. The reason you should get rid of the tank is this; yes it was ORIGINALLY tested to 300 psi. It won"t test that high now. Also, your safety devices are set at 150 psi and you have a rubber hose. None of this matters if the tank suddenly has a rating of only 100 psi - The tank will go first. A fifty gallon bomb on the truck. I have read in a magazine for stationary engineers about hot water heaters whose tanks have burst. The tank split and went through a wall of the house. The wall didn"t even slow the tank down it only stopped when the tank ran out of water(propellant). That was with water. Air pressure will be even worse. Now if the tank is tested as a pressure vessel and certified, knock yourself out. Good luck.

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