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Tool Talk Discussion Forum

Stuck troubled compressor

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BillCA

07-03-2005 14:10:09




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I picked up a Kellogg American last week that has spent the last few years sitting in a vineyard. I think it is a model 321. It"s 2 stage, 2HP with a 50+ gallon tank, made in 1962. Externally it looks in good condition.

The problem is that the pistons are stuck. I pulled the head, and have soaked the pistons in PB Blaster for two days now, but wonder if anyone has some better ideas for getting this thing unstuck.

Any ideas on resurrecting this old pump much appreciated (or should I make it into garden art?).

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MAC,IL

07-04-2005 09:22:00




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 Re: Stuck troubled compressor in reply to BillCA, 07-03-2005 14:10:09  
Use a little marvel mystery oil or some shalers rislone.



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old

07-03-2005 16:57:23




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 Re: Stuck troubled compressor in reply to BillCA, 07-03-2005 14:10:09  
PBs ok but I prefer tranny fluid. Another thing you might try is some turpentine on top of the PB. Turpentine not paint thinner



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BillCA

07-03-2005 23:02:28




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 Re: Stuck and troubled compressor in reply to old, 07-03-2005 16:57:23  
Thanks--I poured some turpentine in, fiddled in the shop for a bit, then came back and gave the flywheel a turn. It won't go a full cycle yet, but it moves. I'll keep soaking it. Thanks again.



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larry in tn

07-04-2005 07:02:00




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 Re: Stuck and troubled compressor in reply to BillCA, 07-03-2005 23:02:28  
I had the same problem with a similar(321Kellogg) compressor. Keep soaking the piston and turning it over by hand until you can turn it full circle then turn it some more. If the heads are off you shouldn't have any problem with feeling the rotation get better as you clean up the bores. Useally some ruffness will occure where the rings contacted the bore. the combination of solvent and and ring friction as you turn the pump will clean up those contact areas. Be sure to drain the old oil and add new oil. Run it a sort time and then drain oil and refill again. This is done to help flush out the pump. If your's is a vertical tank like mine you should drain the tank. Once you drain the tank, remove the entire drain assembly and check it. Mine(on vertical tank)would not completely empty out all the water. I found that because the drain was located about 8" up on the tank side. It wasn't draining completely. There was supposed to be a pick-up tube attached to the drain cock that extended down into the tank bottom area. It had rotted off. I replaced it with a piece of rubber hose. I wrapped some solder around the hose end that goes into the tank. This insures the end stays submerged. After this change I was able to drain approx. another gallon of some really awful crude from the tank. After two years the compressor is still running strong. It turns slow and the recovery time is not as good as some but for general use it works just fine. I've got it set-up to come on at 120lbs and cut-off at 145lbs. Neat old unit. Mine was set-up to turn CW which is unuseal compared to the others I have(I collect the things). Let us know how you make out.

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BillCA

07-05-2005 16:12:38




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 Re: (no longer) Stuck and troubled compressor in reply to larry in tn, 07-04-2005 07:02:00  
All good advice. I kept soaking it and working it, and it turns full cycle smoothly now.

The tank is pretty dry--it just had a little rainwater that had drained through the pump. I'll attack the head next. It's pretty crusty.

Thanks to all for the advice.



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