Quincy 80 gal QT5 pump wont turn and blows circuit breaker

by Jay
(Fort Collins, CO)

Quincy QT 5 series air compressor

Quincy QT 5 series air compressor

I try to on my Quincy 80 gal QT5 air compressor this morning and it hummed and blew the breaker. Tried again and same thing obviously.


I called Quincy and they had me take off the belt and see if it was the motor or pump.

Motor works fine.

When trying to turn the wheel from the pump it would stick about every half turn. Took off the top and could see the pistons. As I turn the wheel and the pistons pass each other on the middle of the stroke is where the "stick" comes from.

I can't see any obvious problems inside or out .

All I really know is that the wheel wont turn freely. How big of a problem is it to actually take the shaft out? Should I just take it somewhere, or do I really want to get into breaking it all down?

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Apr 25, 2014
QT5
by: Doug in s.d.ca

Depends on your skill level and how much time you have on your hands.

Did quincy have any idea ?

From look of it, binding sounds like either a really bad bearing or a bent crank or rod.

Let us know what happens, would you? Could help someone else down the line.

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Need air oil separator for quincy qsi 750

Quincy compressor QSI 750

Quincy compressor QSI 750

I am looking for the right air oil separator for a quincy qsi 750

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Apr 10, 2014
Oil Separator QSI 750
by: Anonymous

Hi,

Can you email Quincy Compressor at info@quincycompressor.com and provide us with the serial number of the compressor? We can then provide you with the parts book for your compressor. Thanks so much.

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unloader issue on quincy 230

by aaron
(janesville,wi)

I have a quincy 230 and am having problems with start up I do not believe there are unloaders on it. how do I tell what unloaders I will need and where to find them

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quincy 216 how to use a gas engine

by Mark
(Missouri)

Any ideas on how to make a quincy 216 work with a gas engine? I have the engine and compressor all ready to go but I really need to get some kind of unloader set up on it. Can I use the unloaders in the head to cut out when the pressure gets to 100 or do I need a external unloader? Thanks for any help

Mark
________________
Hi Mark... happy to post this for you. It's a bit more mechanical than air related, so it's not my expertise.

I do know that your unloader will have to adjust the throttle so that when the compressor reaches cut out the motor idles downs, and then revs up when the cut in tank pressure is reached.

I think I may put together a forum on gasoline and diesel powered compressors for the folks that use them.

Cheers,

Bill

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Aug 26, 2013
update
by: Mark

I think that I can use a unloader valve to send air pressure to the air idle and the unloader in the head of the Quincy 216-100. I think that will allow it to unload and idle down at the same time and vise versa. Anyone agree with me? Any help is great. Mark

Aug 26, 2013
216 on gas
by: Doug in s.d.ca

Assuming you have the correct ratio on the pulley for a max 900 rpm on the compressor:

Seems to me you can use the existing pressure switch to operate a solenoid or even an air cylinder to control the engine throttle.

If the engine is electric start, you could use that battery to run the circuit, or perhaps add an external battery if the engine is pull start.

Have fun, and let us know what you come up with...

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