Quincy Compressor

[Sigo]

So I'm trying to locate a pressure switch to replace the Furnas Style H11 that is defective. Google isn't my friend today. Anyone know what the specs on this thing is or where I can get a replacement?

 

[Sigo]

Can you post a picture of the inside of the air filter? As stated above, it's very likely an oil-bath air filter. This type of filter was used well into the 1960s - I had Toro lawn mowers as a kid that were equipped with one - ticked me off to no end, because I would forget about the oil in there and tip the mower up to clean out the deck or change the blade and get oil all over.

So here are some pictures of the filter. It is soaked in oil but I cannot tell how it would get there. As you can see, it would have to come out of the side of the pump and then up the pipe. There doesn't appear to be any passage for the oil that is purpose built. Also, all the diagrams I've seen of this pump show a dry filter where on mine the air filter pipe connects to the pump. I'll be getting a rebuild kit in the near future.

My local distributor was kind enough to send me an instruction manual. Someone wrote in pen that this is for a "pre 1969 to 3/26/71" on the cover. Here is an excerpt from the manual regarding the air filter:

"AIR INTAKE:
A clean, cool and dry air supply is essential to the satisfactory operation of your Quincy air compressor. The standard air filter that the compressor is equipped with when leaving the factory is of sufficient size and design to meet normal conditions, if properly serviced, in accordance with the maintenance section of this manual. If, however, the compressor is to be installed in a location where considerable dust, dirt, and other contaminants are prevalent, it is strongly recommended that an oil bath filter be substituted for the standard filter."

Maybe this is the oil bath filter mentioned?

 

[redmondjp]

That's definitely an oil bath air filter. They still work as well today as they did back then. You clean it in solvent, let it dry off, and then add a small amount of motor oil to the reservoir - probably up to the level of that rib on the housing (so approximately 1" deep).

 

[Sigo]

That's definitely an oil bath air filter. They still work as well today as they did back then. You clean it in solvent, let it dry off, and then add a small amount of motor oil to the reservoir - probably up to the level of that rib on the housing (so approximately 1" deep).

That's good to know and thanks! I still plan on rebuilding the pump because I do hear a slight knock. It will be worth it in the end. In the meantime, I've been working on the pressure switch and hope to have it sorted out soon. Everything looked OK and I think it was just the contacts that were corroded a little. I took it apart and blasted everything. Touching up the primer/paint and then will put it back together, greasing all the appropriate places/parts. More to follow.

 

[Sigo]

What overhaul/tune-up kit do you recommend getting?

I've been looking at various sites but not sure which one to get.
There are several here: http://oemaircompressor.com/QuincyAirCompressor-ReciprocatingPartsandRebuildKits.aspx.
I don't mind spending a little money on this but don't want to spend unnecessarily.

 

[chrispyny]

You have to call Quincy with your serial number on the plate off the compressor. Sometimes one for pump, one for whole unit.

They will give you the pumps ROC or Record of Change. This means, every update or upgrade they do to a piece of machinery at the factory as time passes, it gets a ROC. So some rebuild kits won't work on different machines with different ROC's. The revisions could be major or minor. Think of them as recalls, or changes in design for improvement, from year to year.

With that info, buy your rebuild kit. Also, google or youtube lapping quincy valves. Its easy, a super flat surface like a glass table, some fine sandpaper, some oil, and 5 minutes per valve.

 

[Sigo]

You have to call Quincy with your serial number on the plate off the compressor. Sometimes one for pump, one for whole unit.

They will give you the pumps ROC or Record of Change. This means, every update or upgrade they do to a piece of machinery at the factory as time passes, it gets a ROC. So some rebuild kits won't work on different machines with different ROC's. The revisions could be major or minor. Think of them as recalls, or changes in design for improvement, from year to year.

With that info, buy your rebuild kit. Also, google or youtube lapping quincy valves. Its easy, a super flat surface like a glass table, some fine sandpaper, some oil, and 5 minutes per valve.

Thanks, chrispyny. I know I have a 310-21. My question is which rebuild kit to buy. I'm leaning toward the TUK but would appreciate everyone's thoughts.

QUINCY STYLE TUNE UP KITS - $42 - Have been assembled, which contain an Air Filter, Oil Filter, Valve Discs, Valve Springs, Unloader Diaphragms, Valve Gaskets, and some other gaskets (usually Cover Plate)

QUINCY STYLE OVERHAUL KITS - $324 - Have been assembled, which contain Valve Discs, Valve Springs, Gasket Set, Piston Rings, Piston Pins & Bushings, Insert Bearings, & Main Bearings. Some also contain Air Filter Elements Oil Filters, Unloader Diaphragms & Springs, and O-Rings.

MAJOR OVERHAUL KITS MOK's with Wearing Valve Parts - $348 - To simplify ordering parts for single machine repair, Quincy style Overhaul Kits MOK's have been assembled which include Gasket Kit, shims, Piston Pins (lock rings if used), Piston Pin Bushings, insert bearings (if used in original rods), valve discs, springs, o-rings, oil seal and unloader diaphragms if required, to recondition one compressor, Kits for non-Vacuum pumps include a Solberg style air filter. Kits marked with a symbol includes an oil filter element.

TUNE UP KITS TUK's with Wearing Valve Parts & Standard Size Piston Rings - $108 - To simplify ordering parts for single machine repair, TUK's have been assembled which include Gasket Kit, shims, Piston Ring Kit, insert bearings (if used in original rods) valve discs, springs, o-rings, oil seals and unloader diaphragms if required, to reocondition one compressor.

 

[chrispyny]

You have to take the pump apart to see what your pump needs, then buy the appropriate kit for it. It's your call. Depends on whats wrong with it, how confident and mechanically inclined you are in your rebuild process, how long you plan on keeping it and how much you want to spend rebuilding it.

 

[G20-Budo]

Sigo,

How goes the rebuild on your old Quincy air compressor? This is an interesting thread, and I'm looking forward to hearing how it turned out?

 

[Sigo]

So far I've got the new pressure switch and now it kicks on and off as it is supposed to. Next I'll begin tearing down the pump to figure out what, exactly, I need to purchase in order to bring it back to new. I've got quite a few other projects in the works and this has taken somewhat of a backseat for now. I'm sure to be back with more questions and progress updates as I get back to it.

 

[G20-Budo]

Sigo,

I get what you mean about having too many other projects in the way. Looking forward to your future progress.

 

[pcmeiners]

The link below is for the start of a QR325 rebuild, but is still relevant for yours, there are multiple parts to the series.....