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My coleman air compressor pumps but doesn't pressure up

I checked everything what could it be? The two both at 0. So it's not the regulator right?

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  • 97 Answers

Check the seals around the drain **** and the burst disc on the side of the compressor motor. If either are shot then the reservoir won't be able to hold air under pressure.

Posted on Jun 18, 2009


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Posted on Jan 02, 2017


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1 Answer

My air compressor doesn't seem to want to shut off. how do i know i have it set correct

turn pressure regulator all the way to the left, therefore requiring the least amount of air pressure(psi) in the tank so it will shut off at its minimum. If it still continues to run, its probably a bad regulator pressure switch and your going to need a new one. Good Luck

Jun 07, 2012 | Coleman Air Tools & Compressors

1 Answer

I have a 24 gallon. motor starts and pumps but it takes forever to fill and the pressure comming out cannot be regulated

Nothing makes me grunt like "Tim the Tool Man"more than having a air tool in my hand." More Power!" The first (andonly) compressor I ever bought was used and failed to build up pressure. I hadlittle idea how it worked. Anyone with a little mechanical knowledge can workthrough it with the parts manual. The. Coleman Powermate Manuals are here. With the parts manual your search will befruitful. Do a internet search for suspect part numbers. You will find suppliers. OneI've used is "Arkansas Outdoor Power Equipment" They have many parts list for you to dig through. The odds are there is a "Tool Supply and/or Repair" in your area where you can take your defective part.

Diagnostics: After you let it pump for a couple minutes turn it off and listenfor leakage.Listen quick and close. If it is leaking bad it may only be obvious for a couple seconds.

Lines and connections can leak. The Regulator (adjustable knob) can leakinside. The "Pressure Switch" can leak (usually at the valve bleeder). If it's under pressure it canleak. All leaks must be fixed. All these parts can be rebuilt or replaced. The "PressureSwitch" controls at what (low) pressurethe compressor kicks on and what (high) pressure it stops compressing.A compressor that pumps and fails to build up the pressureis leaking air as it pumps. Watch the gauges as it pumps. Does it reach acertain pressure and then no higher? If you do not hear leakage when it is offbut it fails to build up 80~90 psi in a reasonable amount of time it is quietlikely it is leaking at the piston as it pumps. A (piston assy, O Ring, and cylinder)repair kits is available online. Or you can check with local "Toolsservice/sales" stores for parts.

Remember a dusty environment requires the filter element becleaned more frequently. Run it without a filter and you'll be replacing thepiston assy sooner.
Repairing it yourself is much more manly (and less expensive) than replacing it

Jan 11, 2011 | Coleman Powermate 11 Gallon Air Compressor

1 Answer

I need a diagram to show how to hook up pressure regulator

This is my advice if you dont already have a regulator. Go to menards or lowes andlook for a regulator kit. They usually come with everything you will need to put a good one on your compressor. Instructions will come with it along with the threaded pipe to hook it up with. I myself just got a pressure regulator kit from Theisenes.
I started by removing my air hose from the tank, next youll need to attach the regulator to the tank where you removed the hose, your kit should have prethreaded
metal air pipe to go from the tank to the regulator (use thread tape or joint sealer to prevent leaks ) Now use your sealer to seal airhose to the other end of the regulator the airoutlet side. Turn it on abd check for leaks and see if you can set your pressure regulator to a set pressure If it holds without leaking you did a great job GOOD LUCK!!!!! SignedTaz

Nov 01, 2010 | Coleman Powermate 60 Gallon Air Compressor

1 Answer


Coleman PowerMate CT4090410 Operator Parts Manual

This unit uses an loader valve to control pressure, it will unload compressor and idle engine back until the pressure falls below 95 psig and the speeds engine up and loads compressor until cutout pressure is reached. I've linked to manual and the unloader is
Coleman PowerMate CT4090410 Operator Parts Manual Page 18
The item number is 9 and part number is 070-0056.. This part is around $100-$110. Ive repaired this type part on air compressors used on mechanics service trucks ., Depending on your skill level and access to tools and parts, it might be better to purchase a new one.g take time ti read to read and understand manual. Good luck

Nov 10, 2017 | Coleman Air Tools & Compressors

1 Answer

Compressor won't turn off automatically

adjust regulator. take off cover from regulator, release bolt or screw in the spring. if you do this while running watch out for electrical shock. if this dont work, check electrical part of regulator. can be stuck. watch pressure gauge not go over max. good luck.

Feb 11, 2010 | Coleman Proforce 6 Gallon Air Compressor

1 Answer

What settings do I use for the VP201 compressor

Leave the compressor setting to the highest level.The other guage is to regulate the pressure output.For example if you need 40 PSI turn this regulator until this output is reached

Oct 08, 2009 | Coleman Air Tools & Compressors

1 Answer

The pressure reads 40 psi on both guages on this

with it running check regulator knob .it pulls up turn right pressure should go up.if not regulator bad

Jun 20, 2009 | Coleman Powermate 11 Gallon Air Compressor

1 Answer

My pump has pressure in the crankcase.

this is normal operation to have pressure in the crankcase and it helps with lubrication so proper oil level should be checked regularly and if overfilled would result in oil being blown out of the crankcase vent.

Mar 22, 2009 | Air Tools & Compressors

2 Answers

Coleman powermate inflationmate pump

The ring is gone on compressor. You can buy replacement pistons and rings from colemen. Comes with instructions.Good luck

Sep 29, 2008 | Air Tools & Compressors

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