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I have a Sears model 919.155732 compressor that only pumps up to 40#s think I need regulator can you help

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Check the head gasket. mine was leaking internally therefore not allowing the pressure to rise.

Posted on Jun 29, 2009


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2 Answers

Compressor runs but only pumps 40 psi

Check your regulator to make sure its set to maximum. When was the last time you drained the tank, it may be full of water.

Mar 24, 2015 | Psi Air Tools & Compressors

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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.

Jun 13, 2014 | Craftsman 20 Gallon Portable Horizontal...

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Regulator will not exceed 90 psi.

It is possible to replace the regulator with a higher capacity regulator. Almost all air tools warn against using more than 90 PSI, and I think that your regulator is limited to 90 PSI for safety reasons... (but why on a compressor capable of 150 PSI I don't know). If you need more pressure, buy a replacement regulator (doesn't have to be Sears) and use a 1/4 inch nipple or a short length of air hose to connect it to your compressor.

Jun 04, 2013 | Air Tools & Compressors

1 Answer

My Campbell Haufield compressor does not shut off once it fills up why?

If the motor pumps the tank up to the maximum pressure then keeps on running you have a broken pressure regulator. Replace it, as over filling the tank can be extremely dangerous. The pressure regulator listed by C-H for your compressor is part number CW210100SJ and should cost you $40 to $45.

Feb 02, 2012 | Campbell Hausfeld Air Tools & Compressors

1 Answer

Cannot get above 40 psi with my sears air compressor model 921.153101

Hi talex, my name is John. Welcome to FixYa. Check all lines for air leaks, check the line coming from the pump to the tank, you may have to remove it to check it, alot of times this line will have a split in it and hard to pin-point the problem. Thanks for choosing FixYa...John

Dec 06, 2010 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

Low air pressure

This sounds like it is either the pump is leaking from the piston or more commonly, the rubber seal that seals the outlet tube to the cylinder head blew out like mine. Let me guess, it got a lot louder than it was originally? The seals are readily available from sears parts direct, its like 3 bucks but shipping is around $8. Hope this helped

May 23, 2010 | Craftsman Air Tools & Compressors

1 Answer

Broken cog on compressor motor 919.166440

Below is a link where they have a variety of parts for smaller craftsman compressors.
I didn't see an exact match for your model however I think if you contact them they will probably be able to help you out. I'm sure that motor/pump model was used on several different models.
Hope it helps.

Nov 16, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

2 Answers

We have a 30 gallon vertical model permanently lubricated single stage air compressor, made by Sears, and it won't build up the air pressure and it won't shut off. Could this be the pressure regulator...

This to me doesn't sound like a pressure regulator, but rather an air leak somewhere. This is telltale because the unit will not build pressure. On the bottom of the tank, make sure the drain pet **** isn't open. I've drained my air compressor before and left it open, resulting in this same problem. Just finger tighten it up and it should solve the problem. Also make sure the pressure relief valve isn't stuck open. There is sometimes a little "keychain ring" attached to it. Try working that back and forth by pulling on it. A small amount of WD-40 is probably a good idea for it too. If either of these are open, the compressor will run all day and never shut off because the pressure switch isn't seeing a buildup of pressure. If these appear to be normal and closed, take some soapy water and brush it around all of the fittings on the air compressor. Check the fitting from the motor/piston assembly to the tank, etc. This will make checking the other leaks easier, too! :)

The very worst thing this could be is a crack in the tank itself, but that would be a fairly rare occurance.

I hope this helps! :)

Sep 22, 2009 | Air Tools & Compressors

1 Answer

Compressor is building up pressure very slow.

It could very well be the valve plate however before you order parts take a look at the cylinders. Unplug the unit, remove the cover from crank side and turn the compressor by hand till the/a piston is at top of stroke. Examine upper cylinder for scratches /wear or failed vinyl piston ring. On oil-free compressors, dirt and grit is sucked-in from the bottom of the cylinder and causes leaks between cylinder wall and piston. If scratched, air pressure is leaking down thru cylinder wall. Failed reed valves cause a pulsation at the intake port (air seems to be pumped out the intake). If you see a model number anywhere on the pump that begins with " WL", your pump is made by Campbell Hausfeld. Parts can be ordered from other-wise order parts from sears parts. Cylinder kits are around $40. Good Luck on the repair and email if you have questions.

Apr 02, 2009 | Air Tools & Compressors

1 Answer

Pressure regulator gauge wont work on my 3 gal. air compressor how do i fix it or where do i get a new one (craftsman) i also lost my book , how often do i change the oil ?

If the regulator is inline you need de-energize the compressor to remove the regulator.

Sears parts and service:

Compressor Information:

Wiki Buying Guide for Craftsman Regulators:

Sears / Craftsman Forum & Repair Information:

3rd Party Regulator Retailer:

If you feel that your problem is too serious for you to repairyourself, please contact a licensed/certified technician.
If you wish,you can call Sears HomeCentral at 1-800-4-MY-HOME tomake an appointment for a technician to visit. (There is a charge forthis service.)

Mar 11, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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