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Tool Talk Discussion Forum

Quincy Question for Roger?

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Trucks

11-05-2003 19:29:19




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Hey Roger,
This is Trucks again, I was wondering if you knew anytthing about the lvd 111423 unloader valve on a 325Quincy aircompressor?I got to looking at my owner's cd that came with mine, and I noticed that valve has an adjustable knob on top of the valve so I turned it opposite(counterclockwise) of what position it was in when I got it.Now I noticed when I put it back in the clockwise position, where it is supposed to be I'm told, that I have an air leak out of the top of the knurled knob, it has a small hole in it.It keeps leaking.My question is there anything I can do? Did I mess up anything?I turned that knob while it was pumping up. I emailed Quincy, but I haven't gotten anything back yet.I know you know alot about these Quincys,Please help me if you can.

Thank you very much, Trucks!!

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Roger

11-05-2003 20:01:02




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 Re: Quincy Question for Roger? in reply to Trucks, 11-05-2003 19:29:19  
I am not familiar with that particular valve, but usually turning any unloader knob counterclockwise results in lowering the unloading pressure. You might have to turn it in a bit further than you turned it out, possibly to make up for any backlash in the threads, that is, it might not be exactly back into the position it was in originally, and the pump is still unloading prematurely. Any pneumatically operated unloading valve that has adjustments for both range and pressure can be a nightmare to reset correctly once they have been altered, but just give it a turn and see what happens. Otherwise, I might hazard a guess that the internals have become stuck in place, or an internal o-ring has failed. They are not usually hard to take apart and inspect.

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Larry

11-06-2003 04:35:44




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 Re: Re: Quincy Question for Roger? in reply to Roger, 11-05-2003 20:01:02  
I agree with Rodger about the possibility of trash in the unloader system. I have been working on an old compressor of unknown manufactor. Could not get the unloader to work at all. I finally took it apart and found all kind of rust and trash in it which was causing the valve(spool??) to hang-up letting tank pressure back into the compressor. A good cleaning made all the difference. This valve has what appears to be an adjustment knob on it but in reality is only a threaded cap that covers a chamber that contains a very light tension spring and also the access to the spool. No adjustment at all although there is a threaded hole in spool that could have contained a screw of some sort that could limit the travel of the spool. I doubt this however because the adjustment would mean removing the knob/cap for each adjustment. The unloader/oneway valve is made by DPW and appears to be of good quality. I still need to run the tubing back to the pressure switch trigger to finish the plumbing for the unloader. I need to get some help from Rodger on this project. I will post a seperate note to him concerning my question.
Larry

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Trucks

11-06-2003 06:17:46




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 Re: Re: Re: Quincy Question for Roger? in reply to Larry, 11-06-2003 04:35:44  
Thanks Roger!!

Trucks



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