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Topic Review (Newest First)
03-16-2012 08:51 AM
oldred
Quote:
Originally Posted by RichardRonnie
Hey! I bought a used air compressor and I want to know the ideas on ways to get the loose rust out of this compressor.


Even if you get the rust out the damage is still there. Think of it this way if the tank had been destroyed in a fire then removing the ashes would not fix the damage, rust is simply ashes from slow oxidation and is no different than ashes from fast oxidation from a fire -the damage is still there! Don't use a rusted out tank, it can easily get you hurt or killed!
03-16-2012 06:52 AM
unix
Quote:
Originally Posted by RichardRonnie
Hey! I bought a used air compressor and I want to know the ideas on ways to get the loose rust out of this compressor.

B............OO.................M !!!

Problem solved that should get the rust out for ya. Oh yes please be sure to make a video.



Next question
03-16-2012 06:20 AM
johnnyg
Quote:
Originally Posted by RichardRonnie
Hey! I bought a used air compressor and I want to know the ideas on ways to get the loose rust out of this compressor.
Buy a new tank with no rust.
03-16-2012 05:41 AM
RichardRonnie Hey! I bought a used air compressor and I want to know the ideas on ways to get the loose rust out of this compressor.
07-04-2007 04:52 PM
oldred
Quote:
Originally Posted by Chevrolet4x4s
I thought that it had been drained by the drain plug. Mine is a lil tricky sometimes after draining it and thought that it might be the same case.
Shane
My point is if you see dirty water or even rusty water stains on the tank or the floor under the tank it should be checked and determined for sure where it is coming from and it is not a good idea to assume it is just leaking from the drain, which is common BTW. A leak in the tank should be considered a popped safety valve and a warning signal that the tank has reached the end of it's service life and MUST be scrapped. Attempting to repair a tank by welding or other means is like plugging that safety valve and ignoring a warning about a serious danger, in addition welding on the tank usually makes it even more likely to fail catastrophically.
07-04-2007 03:19 PM
Chevrolet4x4s
Quote:
Originally Posted by oldred
Don't bet your life on that! ..........

www.surpluscenter.com
I thought that it had been drained by the drain plug. Mine is a lil tricky sometimes after draining it and thought that it might be the same case.
Shane
07-04-2007 10:18 AM
richard stewart 3rd Hi,
Check out the old threads on air compressors on this site, there very
informative & there are pictures you may want to see.
Take care,
Rich

PS I hope everyone is enjoying the holiday. Keep it safe.
07-04-2007 09:50 AM
oldred I checked those tanks at Surplus center and they are not as cheap as I thought they were at $149.00 for a thirty gallon but this does include a handle and it is mounted on wheels, basically a compressor without the motor/pump. One way to check for a small leak is to spray soapy water on the tank while it is under pressure. From the situation you have described if that thing is more than five or six years old I would not even bother testing it as there is no way of knowing what the inside looks like and it sounds as if it has sat idle for a long time with water in the tank so the rust is most likely extensive. The danger of an exploding tank is just too great to chance IMO and the small cost to remedy the situation in this case is just good insurance.

The tank that F&J mentioned with the brazed spots is REALLY scary because that not only weakens the tank more it is just like plugging a safety valve and I find it hard to believe that people will do that but they do Usually a rusty tank will only spring a leak but sometimes the first warning is an explosion! Do yourself a big favor and don't take a chance on a tank with obvious problems and a questionable history.
07-04-2007 09:50 AM
brian0605 If it has mounting pad style feet I would highly recommend attaching it to the floor. If it has an explosion it won't fly around. I had a friend with a small 10 gal portable compressor that he knocked over with his 4wheeler in the shed and he said that thing went crazy. Fortunately for him it went away from him. Brian
07-04-2007 08:19 AM
Slipangle The Sears compressor (going by eyeball guesstimation) is a 30 gallon tank, my newer lower powered C-H is I think 16 gallon... The Sears compressor is rated 6.4 SCFM at 90 psi.

The drain plug wouldn't budge, I had to drain it from the air outlet.

I don't even know if the tank is leaking... The air pressure drop was not enough to read on the gauge, and there is neither an obvious leak at the point of origin of the stain on the floor or a path where a drip depositted rust stain on the outside of the tank on its way to where it dripped to the floor... The paint is pretty clean with a little uniform undisturbed dirt and no signs of bubbling or rust spots.

About all I can think to do is clean the floor, clean the tank, lay down some paper and see if any new stains appear to get a better idea if there's anything really going on.
07-04-2007 08:08 AM
31choptop as was said earlier I'd run like he77 when that was turned on. its like the air tanks in the 70's that were exploding when filled. all it took was some bad welds and they blew, killing and maiming.put a few companies out of business because of it! its not worth it. use the pump on a new or better tank.please
07-04-2007 06:56 AM
adtkart Listen to Oldred. Your life or others are not worth endangering for an air tank.

I don't know about the output of that compressor, but I wouldn't expect much from a 2HP.

Aaron
07-04-2007 05:34 AM
F&J I bought a new 4hp Sears in 1976 advertised back then as a "special priced model". After several years of hard use, it started blowing head gaskets due to it having a cheapie pump.

A friends father passed away and I ended up with his old Sears 4 hp with a better designed pump, but the guy rarely used it. The bottom of that tank was covered with brazed spots from the old guy fixing rot holes. I just swapped his pump to my good tank.

I then cut that brazed tank in half to see how bad they get. It was deeply pitted all along the bottom. I think a new tank could be purchased at a good price if you shop around. They "should" all be certified, but check on that before you buy.

A 2 hp will have some trouble keeping up with a DA, die grinder, air grinder, but should paint OK.
07-04-2007 12:45 AM
oldred
Quote:
Originally Posted by Chevrolet4x4s
probably didnt get the drain plug tight
Shane
Don't bet your life on that!

First thing you need to do BEFORE you run that compressor anymore is make sure that is not a leak in the tank, if it is then the tank is history and under no circumstances should it be used. From what you have described I would be highly suspicious of that tank and I would strongly recommend hydo testing it before use but if there is a rust leak already in it then it is too far gone and requires replacing, NEVER attempt to repair a rusty tank by welding or any other means. How big is the tank? Surplus center had some smaller tanks a while back and I think they are still available at a really decent price.

www.surpluscenter.com
07-03-2007 11:17 PM
Chevrolet4x4s probably didnt get the drain plug tight
Shane
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