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  #11  
Old 04-13-2021, 03:58 PM
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mccutter mccutter is offline
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Quote:
Originally Posted by Erwin Haban View Post
What about the 25 year old tank of 75/25, still full but am I correct that it would still be good?
The gas should be fine although I don't know enough to say if there would be any "separation" over time. Our resident chemical engineer might have some input on that...

Hopefully the regulator wasn't left in the "adjusted" position because that could mean the spring has fatigued and/or seal has become compressed/hard/leaky. Start by loosening the regulator adjustment so it is loose and then s l o w l y crack open the valve on the cylinder while watching the low-side gauge for movement. If the gauge "jumps" up to max while you open the valve, quickly close it again because the regulator is defective and needs repair or replacement. Some are rebuildable with a $20 kit.

Other than a gentle blow out of dust from the inside, and replacement of the wire (if necessary--roll off about 100' and see if the surface rust goes away), I would remove the gun tip and blow out any dust/rust from the MIG lead liner from the roller side. Maybe a little clean up of the roller and idler with Scotchbrite or similar...
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  #12  
Old 04-13-2021, 07:27 PM
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We always ran the wire through a bit of scotch brite before the rollers at the wheel plant . Why no idea wire was in 400 to 600 pound drums and did not last long .
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  #13  
Old 04-13-2021, 11:12 PM
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In a pinch we run it through a foam earplug or two to help wipe the rust off.


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