Question about Stanley FactoryReconditioned Bostitch UCAP2060P 105 Amp 2 Horsepower 6 Gallon OilFree Pancake Compressor

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Air compressor won't go past 20 psi and keeps running

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 4 Answers

SOURCE: bostitch air compressor cap 60p-of

Mine had the same problem.
One of the reed valves in the head had broken off due to metal fatigue. Take off black plastic housing with 5 screws along the bottom and one bolt under the handle (the front only). Unscrew the four allen headed screws on top of the compressor. Unscrew the discharge line from the head. You'll need part # AB-A640050 which is the valve plate assy. and possibly AB-9007012 which is the intake valve located in the top of the piston (if damaged). About $18 including shipping from Bostitch.

Posted on Dec 16, 2008

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SOURCE: craftsman 3 gal air compressor - no air presssure

Check the head gasket. Mine just did the same thing. Mine was blown between the two chambers on top. It's very thin right there. I went to the auto parts store and bought some gasket and made my own for about $6. It's up a working great...finally. BTW the gasket kit is on back order right now at Sear's parts website. It appears we aren't the only ones with the problem!

Posted on Jul 19, 2010

  • 1 Answer

SOURCE: air compressor 3 gallon

I had mine do the same thing... The head gasket blew out between the intake & discharge side.
I went to O'rileys and bought the blue gasket paper and cut out a new one ($3.00) works fine now.
Just take off the plastic cover, undo the discharge line at the compressor head, remove 4 allen
head bolts, lift off cylinder head and you'll see the gasket gone at the center bridge.
Draw a picture of the way the valve plate under the head is assembled so it goes back together right.
Use care cleaning the old gasket off, NO power tools....Hand wire brush to preserve the little ridges
that bite into the gasket, Soak with solvent helps..You can also order the gasket kit from Sears
about $12.00...Hope this helps ya......John

Posted on Oct 31, 2008

  • 1388 Answers

SOURCE: No air pressure past 60PSI on a 125PSI Campbell Hausfield WL61110

Your comperssor is oilless type and suffers from short cylinder / piston life. When the compressor no longer reaches cycle pressure the cylinder / piston should be replaced. These parts are available at www.chpower.com I believe that the part number is wl210300aj. Not expensive, enjoy.

Posted on Dec 13, 2008

  • 11 Answers

SOURCE: I have a 6.5 hp air compressor. It will build up

the check valve most likely has gotten stuck open

Posted on Mar 25, 2009

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1 Answer

I have a 3 gal craftsman air compressor. Compressor runs but will not build more than 20 psi in tank reserve. Whats wrong?


if shuts down at 20 psi regulator is set wrong
it runs but only builds 20 psi, compressor is probably worn out

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1 Answer

Why will my bostitch pancake compressor 240 psi tank 180 regulator that the guages will not show building pressure


Hi, There are different posibilities. I would need more information. Was it always like that? Does the guage on the main tank and the guage on the regulator both not show more than 20psi? When the auto shut-off is triggered do you feel there is more than 20 psi in the tank?

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My sears air compressor model 919.156781 will not pump up past 40 psi , then motor then compressor stalls and motor gets hot , have to unplug . I have had the motor checked


When it gets to 40 psi turn it off and see if you hear air leaking down from somewhere....if so listen and feel around the edges of the compressor head. If you hear or feel air leaking there you may need to replace a head gasket.

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Searching for fenwai pressure control fw 10


If your compressor is a piston compressor, try cleaning the check valve which comes from the pressure switch to the tank (it has a little spring and a rubber/plastic valve inside)
Otherwise check to see if it is sucking air in properly, (whilst it is running, remove the air filter, and very quickly put your hand over the air intake to see if it is sucking whilst it is at 20 psi, if not, then it may be that the valves in the head maybe either broken or not seating properly

If it is not a piston compressor, then it maybe the MPV needing some attention

Hope that helps

Aug 22, 2012 | Air Tools & Compressors

1 Answer

Craftsman model no. 921.153101 won't go past 20


check the pressure switch also is it before or after a regulator

Mar 22, 2012 | Craftsman Air Tools & Compressors

1 Answer

I have a 21 gallon 4hp peak motor Central Pneumatic oil lubricated Model 47065 air compressor and it will not go to over 20 psi and it will just keep running


Possible that there is leak on the system or the piston/rings/cylinder has worn out.Also check for oil within the unit. Check the compression of the cycle and if this is too low it means that there is wear and tear and will require a overhauling and reset.

Mar 14, 2012 | Air Tools & Compressors

1 Answer

My compressor will not go over 20 psi i have a craftsman 921 4 gal 125 psi compressor and it will not build past 20 psi i do not know how to get to the pistons and stuff what do i do?


The problem with compressors not building pressure is usually a bad pressure switch or bad regulator. Does the motor shut off at 20psi or does it continue running and not build pressure? If the motor continues to run with no increase in pressure, the you should go over the machine looking for air leaks from your regulator back all the way to the motor. Any air leak while the compressor is running can cause the pressure to "peak" way before the intended shutoff that it is regulated to.

Mar 01, 2011 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

2 Answers

Compressor 25 psi thats it


I assume it keeps pumping, but doesn't build any more pressure. That is probably bad valves or rings. If your unit has a crankcase breather, and it is puffing alot of air, look for rings. Otherwise valves.

Dec 15, 2009 | Campbell Hausfeld 26 - Gallon Air...

1 Answer

Twin tank air compressor does not pressurize past 65 to 80 psi.


machine inlet valve not sealing in cylinder head valves need to be removed for assesment

Dec 03, 2008 | Northern Industrial 2 Hp Twin Tank...

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