Author Topic: Quincy compressor “stuck”  (Read 1312 times)

Offline wrbix

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 1697
Quincy compressor “stuck”
« on: May 11, 2019, 10:16:46 AM »
Secondary to moving/renting the old home place/etc, my Quincy air compressor Model 310 is stuck (hate to use the term seized yet) after sitting unused for about a year and a half. Motor just spins against the belt, the flywheel won’t turn by hand. There is no nut or any other purchase on the flywheel with which to apply a torque. No easily apparent way to access the crankshaft.
Anyone here with any experience/suggestions other than hauling it in for rebuild....just the compressor head itself is one heavy summagun.
Bill in VA, sometimes FL

"Eschew aphorism"

LeMans IV - "Giulia"
Lario - "Giulietta"
V50III cafe'd - "Leggera"
‘77 Convert - “Sofia”
BMW airheads: R100RS, R100CS, R100GS, R100RT, R60/2 sidecar rig
Classic Mini
‘60 Austin Healey Sprite
Caterham Super Seven Sprint
‘13 Audi TTRS
Grumman AA5B (sold)

Offline Sasquatch Jim

  • Gaggle Hero
  • *****
  • Posts: 9600
  • Sidecar - Best drive by shooting vehicle ever
Re: Quincy compressor “stuck”
« Reply #1 on: May 11, 2019, 10:37:45 AM »
Sounds like it's broke.
Sasquatch Jim        Humanoid, sort of.

Online RinkRat II

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 2188
  • Lake Powell AZ
Re: Quincy compressor “stuck”
« Reply #2 on: May 11, 2019, 10:38:46 AM »
    Highly unlikely anything is broken so I would pull  the head off and pour a mix of trans fluid and acetone on top of the pistons and work the flywheel back and forth by hand. Most likely some rust and corrosion has the rings stuck. Parts and gaskets are still available for these old workhorses.   

   Paul B :boozing:
A Miller in the hand is worth two in the fridge.

Offline wrbix

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 1697
Re: Quincy compressor “stuck”
« Reply #3 on: May 11, 2019, 08:08:26 PM »
    Highly unlikely anything is broken so I would pull  the head off and pour a mix of trans fluid and acetone on top of the pistons and work the flywheel back and forth by hand. Most likely some rust and corrosion has the rings stuck. Parts and gaskets are still available for these old workhorses.   

   Paul B :boozing:
Paul, sounds like a plan, thanks.
Bill in VA, sometimes FL

"Eschew aphorism"

LeMans IV - "Giulia"
Lario - "Giulietta"
V50III cafe'd - "Leggera"
‘77 Convert - “Sofia”
BMW airheads: R100RS, R100CS, R100GS, R100RT, R60/2 sidecar rig
Classic Mini
‘60 Austin Healey Sprite
Caterham Super Seven Sprint
‘13 Audi TTRS
Grumman AA5B (sold)

Wildguzzi.com

Re: Quincy compressor “stuck”
« Reply #3 on: May 11, 2019, 08:08:26 PM »

Online cliffrod

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 2171
  • AC Button II
    • Carolina Sculpture Studio
  • Location: Spartanburg, SC USA
Re: Quincy compressor “stuck”
« Reply #4 on: May 11, 2019, 10:40:00 PM »
When it's easy access to apply aft where it pools without running off, you don't necessarily need the acetone.  You may be able to do it without removing the head, especially if the gasket would need replacement.  Be patient & give the atf time to work.  Try rocking the flywheel a little each day until it starts moving.

I just soaked both decades-long frozen lift cylinder and pump on an large Uhrden shop crane/engine hoist for about a week each with straight atf that would pool on top of the frozen parts.  Now both are loose & waiting for new rebuild parts & seal kits to arrive.

Good luck.
1973 V7 Sport  "Now THAT'S a motorcycle!"-  Master Sculptor Giuliano Cecchinelli
1967 V700 Corsa Record
1981 Lemans CX100
https://www.youtube.com/watch?v=ExX3YmQel_Q
http://carolinasculpturestudio.com/
Carolina Sculpture Studio YuoTube Channel-
https://www.youtube.com/channel/UCzSYaYdis55gE-vqifz

Offline wirespokes

  • Gaggle Hero
  • *****
  • Posts: 2028
Re: Quincy compressor “stuck”
« Reply #5 on: May 12, 2019, 05:59:39 AM »
^^^^ What Cliff said.

I think the acetone thins the ATF and helps it sneak in where it's needed. BTW, power steering fluid works better than ATF.

There should be access into the compression chamber without pulling the head.

Offline Rick in WNY

  • Gosling
  • ***
  • Posts: 387
  • Location: NY Finger Lakes
Re: Quincy compressor “stuck”
« Reply #6 on: May 13, 2019, 07:47:29 AM »
Agreed. No need to pull the head just to get it turning. Find the air inlet line and remove it. Get a hose barb that will screw into the port and some clear hose to fit it. Thread hose barb into the intake port. Slide clear hose onto the hose barb and clamp in place. The support the hose, say 12 inches or so, vertically. Use wire, a 2x4, whatever is handy. The point is to hold the hose up and let gravity do the work.

Fill hose with ATF. If it runs right in, fine. If not, fill the hose to the top and let it sit. It will work it's way in, you don't need to be there to watch it, and by using clear hose, it's easy to see if it's gone into the pump.

Done this a few times over the years on the farm... works great!
Guzzi Owner since May 20, 2017
  2004 California Titanium

Offline wrbix

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 1697
Re: Quincy compressor “stuck”
« Reply #7 on: May 13, 2019, 11:38:50 AM »
.....and I’m assuming I’ll be changing the oil once freed up to dump the ATF.

Thanks for everyone’s input.
Bill in VA, sometimes FL

"Eschew aphorism"

LeMans IV - "Giulia"
Lario - "Giulietta"
V50III cafe'd - "Leggera"
‘77 Convert - “Sofia”
BMW airheads: R100RS, R100CS, R100GS, R100RT, R60/2 sidecar rig
Classic Mini
‘60 Austin Healey Sprite
Caterham Super Seven Sprint
‘13 Audi TTRS
Grumman AA5B (sold)

Online RinkRat II

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 2188
  • Lake Powell AZ
Re: Quincy compressor “stuck”
« Reply #8 on: May 13, 2019, 11:55:40 AM »

   If you pulled the head you'll only need a ounce or to of the mix to do it's job.  Iwould not recommend putting fluid in the intake as it will only lead to more problems down the road as you will not get it all out by running the compressor. It will migrate throuout the head and potentially cause sticking valves later on.  Quincy valves are designed and built as check valves and operate dry. I would go ahead and change the oil as a matter of good maintenance I believe your unit does not have a oil filter and would recommend 30wt non detergent oil.  Some later units had an oil filter and could be run on detergent oil. Hope this helps. On the nameplate it will have mod# Ser# and record of change #. If you need parts you'll need that number.

       Paul B :boozing:
A Miller in the hand is worth two in the fridge.

Offline wrbix

  • Gaggle Hero
  • *****
  • *
  • *
  • Posts: 1697
Re: Quincy compressor “stuck”
« Reply #9 on: June 29, 2019, 08:15:03 AM »
Followup/feedback: after a few weeks of ATF/Acetone sitting on top of pistons, I finally resorted to brute force - by moving the cooling circuit slightly I was able to get a “medium” sized pipe wrench on the shaft and with a 2ft extension was able to break her loose. Woohoo!
A few rotations and all is smooth. Awaiting new gaskets for reassembly and test of function.
Thanks to y’all for suggestions/encouragement
Bill in VA, sometimes FL

"Eschew aphorism"

LeMans IV - "Giulia"
Lario - "Giulietta"
V50III cafe'd - "Leggera"
‘77 Convert - “Sofia”
BMW airheads: R100RS, R100CS, R100GS, R100RT, R60/2 sidecar rig
Classic Mini
‘60 Austin Healey Sprite
Caterham Super Seven Sprint
‘13 Audi TTRS
Grumman AA5B (sold)

Online RinkRat II

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • Posts: 2188
  • Lake Powell AZ
Re: Quincy compressor “stuck”
« Reply #10 on: June 29, 2019, 08:29:55 AM »

        :thumb: Most Excellent!

            Paul B :boozing:
A Miller in the hand is worth two in the fridge.

 

20 Ounce Stainless Steel Double Insulated Tumbler
Buy a quality tumbler and support the forum at the same time!
Better than a YETI! BPA and Lead free.
Advertise Here