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John Kjome Posted on Dec 02, 2012

Have PC CF2400 compressor. Runs but doesn't build up air pressure for a very long time. What is wrong?.

Assume rings are shot or ?

5 Related Answers

John Trevino

  • 1420 Answers
  • Posted on Nov 27, 2008

SOURCE: WILL NOT BUILD PRESSURE

Many craftsman compressor are built by champbell hausfeld using a dry type of cylinder and piston (no oil, no crankcase). If dry type, check for worn cylinder and piston ring. Pieces of the vinyl ring can jamb between the reed valves in the head causing air to escape from the intake. If your compressor has a crankcase and oil, check for broken reed valves in head. Spray soap solution on hoses, checkvalve, drainvalve, and fittings to check for leaks. Most likely problem is reed valves broken or open. Parts are available from sears or match parts to chpower.com. enjoy

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Anonymous

  • 65 Answers
  • Posted on Dec 03, 2008

SOURCE: coleman compressor no build up of pressure

your correct either the valves are worn or maybe just need cleaning as for the gaskets,idont know what part of the world your in but check out coleman on the internet or failing that ,i have maid these from gasket material suuplied from my local bearing supplier

John Trevino

  • 1420 Answers
  • Posted on Jan 10, 2009

SOURCE: coleman compressor no build up of pressure

Parts for coleman are available at www.mastertoolrepair.com your compressor is listed as L0502710. If however you like to tinker, you can make a pretty good reed valve out of aluminum can material or other (any ideas?). It is fairly easy to cut, does not last as long as factory stainless steel, but for short term, why not? Good Luck

John Trevino

  • 1420 Answers
  • Posted on Jan 19, 2009

SOURCE: air compressor not filling tank

Most compressors with the problem that you are having suffer from leaking valves. As in a gasoline engine, leaking valves will lower efficiency. Valves in a compressor are in the form of reeds that seal against valve plate. Leaking reed valves or gaskets will increase the discharge air temperture. Inspect these parts with a magnifying lense. Look for evidense of wear or leaks. Also look for signs of air leaking from one cylinder to the other thru gaskets. Replace valve plate as necessary. Simple test, as your compressor is filling, check the intake for strong suction; as it neers the 92 psi mark suction will probably deminish if you have leaking valves. If suction remains strong at 92psi then you have a leak at the discharge side. Check with soapy water on all parts. Good luck

mrhappyface

Joe Garcia

  • 210 Answers
  • Posted on Mar 23, 2009

SOURCE: air compressor fills, but slows down as the pressure builds

sounds like you need a new check valve which should be somewhere between the compressor outlet piping,tubing,etc and the tank which prevents the air in tank to back feed to the compressor which would cause hard starting and could damage the motor easy way to check is when you shut off the compressor with some air in the tank if the check valve is bad it would continue to bleed air out out the unloader valve .the unloader valve on your unit is most likely part of the pressure switch when the unit shuts of it should only bleed down the pressure in the pump so it would make it easy to start when needed hope i didn't confuse you

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Related Questions:

0helpful
1answer

Air compressor runs no pressure build-up

Check for leakages - some time it is as simple as O-ring replacement in the fittings.
Sometime it could be an compression ring breakage - need to repair in shop.
0helpful
1answer

My ingersoll rand compressor won't get up to set pressure

Hi bryon


Here are a few things to check, you may have already checked some of these.


Electricity...Compressors will run best with full 115Vot 15AMP/Or 220V electrical supply from a circuit, over the shortest electrical cord as possible.


Air Leaks..Place your ear close to the compressor and listen for air leaking, if you hear air that is not normal and means you have to locate and repair whatever it is that is leaking.
Check the air unloader valve... The air unloader valve will blown out air when you turned off the compressor, that is normal.
But it should not have air leaking out of it all of the time. If so then it is faulty and in need of repair/replacement.


Valves...If either the intake or exaust valves fail, breaks, or fails to seat, then your compressor will run 24 hours a day and never build up to the correct pressure for shut-off.


Gaskets...Check to see if your gaskets have failed.
You could have a gasket failure between the pistons and you will never know it because it shows no external air leak.
If this situation happens then the air will only cycle between cylinders and never build up the correct air pressure.
One way to check the gasket is remove the air filter, then put your hand over the intake.
Please take time to rate me
Bud
If correct then it will suck you hand against the intake.
If the valve or valves have failed then you will feel the air sucking in and blowing out.


Piston Rings and Cylinder...The piston rings could be stuck,broken, or worn and not allowing the correct pressure to build up in your tank.
A worn cylinder will also contribute to the problem of pressure build-up.



Pressure Switch...Check for air leaks at the pressure switch, it has a rubber diaphram that can fail and leak air out of the system.
Please take time to rate me
Bud
0helpful
1answer

Have PC CF2400 compressor. Runs but doesn't build up air pressure for a very long time. What is wrong?.

A few reasons would be a problem.
Check O-rings in the fittings
Check all air connections, one-by-one with soapy water for bulbs - fix as needed.
Check a pressure switch - it is often a major problem
Or even better to replace with Digital Controller.
Check this site: www.CompressorController.com
0helpful
1answer

Alton 1/3 hp 2 gallon air compressor, building no pressure and sounds funny

Is your compressor a piston compressor? It may be that the valves in the head are shot?
Remove the Air Filter and quickly place your hand over the air intake hole, if you feel it **** AND blow, then theres your problem (It should only ****) these can be replaced.
0helpful
1answer

I have a husky scout 1.5 gallon air compressor. It only builds pressure to about 38 psi. It doesn't build up any more pressure.

You have either warped or broken reed valves on the valve plate or a broken piston ring and/or a damaged cylinder. Any of these will allow a small amount of air compression but as the tank gets pressure in it, it gets harder to push more air into it. If the reed valves or piston to cylinder seal is compromised more and more air will leak past the bad reed or the piston as the pressure goes up in the tank. You'll have to disassemble the air pump to find out what's damaged and needs replacing.
0helpful
1answer

My coleman air compressor won't turn on and I am trying to ghet the top off to see what the problem is. A) How do I get the top off? and B) Why doesn't it turn on?

Hi
Sound like your pressure switch is faulty or maybe a faulty motor but:

Here are a few things to check, you may have already checked some of these.

Electricity...Compressors will run best with full 115Vot 15AMP/Or 220V electrical supply from a circuit, over the shortest electrical cord as possible.

Air Leaks..Place your ear close to the compressor and listen for air leaking, if you hear air that is not normal and means you have to locate and repair whatever it is that is leaking.
Check the air unloader valve... The air unloader valve will blown out air when you turned off the compressor, that is normal.
But it should not have air leaking out of it all of the time. If so then it is faulty and in need of repair/replacement.

Valves...If either the intake or exaust valves fail, breaks, or fails to seat, then your compressor will run 24 hours a day and never build up to the correct pressure for shut-off.

Gaskets...Check to see if your gaskets have failed.
You could have a gasket failure between the pistons and you will never know it because it shows no external air leak.
If this situation happens then the air will only cycle between cylinders and never build up the correct air pressure.
One way to check the gasket is remove the air filter, then put your hand over the intake.
If correct then it will **** you hand against the intake.
If the valve or valves have failed then you will feel the air sucking in and blowing out.

Piston Rings and Cylinder...The piston rings could be stuck,broken, or worn and not allowing the correct pressure to build up in your tank.
A worn cylinder will also contribute to the problem of pressure build-up.

Pressure Switch...Check for air leaks at the pressure switch, it has a rubber diaphram that can fail and leak air out of the system.
Please take time to rate me

1helpful
2answers

My four-year old PC pancake compressor starts fine but only builds up 60 psi no matter how I adjust the pressure regulator. The compressor motor runs continuously. I checked for air leaks and can't find...

First take off the head on the air pump and check the reed valves on the valve plate. If they got hot and warped or cracked they'll work to a point then no more pressure can be built up. Next check the pistion ring and cylinder wall. If either is damaged you'll only get so much pressure build-up then it will leak past the piston.
2helpful
2answers

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.
1helpful
1answer

I have a 25 gal compressor and it will not build pressure. The motor runs but will not build pressure. The compressor is about 25 years old

You got a good life time with this. The compressor has seals or "rings" which wear out over time. Replace them and your compressor will love you. It won't hurt to check all the lubrication points. This procedure is easy for even a novice but may require a special tool. Go to your local small engine repair shop and ask. They will be glad to help you.
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