Old compressor hep

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Garethw

Garethw

Mopar. Because rocket science is too easy.
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My old compressor was having issues. When it gets to about 80psi, the pump won’t turn over. I figured the reed valves were bad. So I took the pump head apart and found this. Pretty corroded in there. Rotating assembly was nice and smooth still. Can anyone identify this brand? I can’t find any reed valves that look like these. Pretty sure this thing is like 50yrs old. It may just be time for a new pump. It’s a solid 60gal tank with a 5hp electric motor so I’d hate to toss the whole thing.

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Can you post all numbers and letters cast into the pump? I see some at the base, but cannot make them out.
 
No problem. Looks like 2133 on the base and 1394 on the cylinder head.

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That is a generic single stage 2 cyl pump, everyone used it.

you can get parts from any air compressor repair shop

these guys are by me, Akron Air Prodcuts

I'm sure you can find one somewhere around you.
 
Unscrew those 2 reed valve plates, light wire brush them. Then throw them in a tub of white vinegar over night.

Rinse them down with distilled water then polish them up with WD-40 and a Scotch Brite pad, then reassemble.

Good to Go . . .
 
George Jets said:
Unscrew those 2 reed valve plates, light wire brush them. Then throw them in a tub of white vinegar over night.

Rinse them down with distilled water then polish them up with WD-40 and a Scotch Brite pad, then reassemble.

Good to Go . . .
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That will probably work. I would try it first.


But Brian is also right. You can even get Harbor Freight's version of that pump.
 
Thanks guys! I’ll try to get the valves out. I already rounded out one screw because it was too corroded. I’ll give it another go when I get back home.
 
Garethw said:
Thanks guys! I’ll try to get the valves out. I already rounded out one screw because it was too corroded. I’ll give it another go when I get back home.
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Keep messin with um. They'll come out. When you get them out, clean the threads REAL good. Then go to the hardware store and get some the same size in stainless. When you put it all back together, put a little RTV on the threads and they'll never corrode again and come out easy if you ever have to take it back apart.
 
Garethw said:
I was looking at their bigger one actually. I’d have to modify the tank a bit to bolt if up. Let’s see if I can get these old reeds out first.
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Yeah I would. The bigger one is the one I have. I am actually replacing all the PVC pipe I used like a dumbass with iron pipe right now. Then my big compressor will be back on line. Oh happy day. lol
 
I may have a good head for one (if it's the same). Mine broke a connecting rod, but the one cylinder that was still working would bring the tank up to 125 psi, it would just take a while.
 
Jim Lusk said:
I may have a good head for one (if it's the same). Mine broke a connecting rod, but the one cylinder that was still working would bring the tank up to 125 psi, it would just take a while.
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I think I’d just need the two plates with the reed sandwiches between. I’ll see if I can get this one apart.
 
While they need to be cleaned up it may not solve the issue. Most tanks use a check valve where the air gets pumped into the tank. That allows air to go in but not put pressure on the pistons. With that corrosion there is probably some in that check valve that is not allowing it to close.
 
toplscuda said:
While they need to be cleaned up it may not solve the issue. Most tanks use a check valve where the air gets pumped into the tank. That allows air to go in but not put pressure on the pistons. With that corrosion there is probably some in that check valve that is not allowing it to close.
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^^^^^ Yes this right here is probably why it pumps up and stalls.
 
Well, I managed to get my big outside compressor back running again. It actually sounds like its old self. Hopefully it'll last awhile.

 
toplscuda said:
While they need to be cleaned up it may not solve the issue. Most tanks use a check valve where the air gets pumped into the tank. That allows air to go in but not put pressure on the pistons. With that corrosion there is probably some in that check valve that is not allowing it to close.
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That’s a good idea. I’ll look for that tomorrow.
 
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