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C2002 type 3 compressor build air pressure correctly but won't let the air out to the hose assembly?

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Steve Pack

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Is the regulator adjusted for required pressure if so then sound like regulator, order rebuild kit.

Posted on Nov 25, 2021

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1answer

Why my air compressor want shut off after building up pressure

If it is building up to the full rated pressure and there are no air leaks in the hoses then it is most likely the pressure switch. It is item 111 in this parts diagram.

Porter Cable C2002 diagram
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No regulated pressure - check valve hose gets extremely hot- hear leak under the black housing on PC c2002

I have seen the hoses develop a leak right where they exit the metal tube from the pump. The bad part is that you have to pull the pump apart to repair it. Here is a diagram so you can see what you have.

Porter Cable C2002 diagram
1helpful
1answer

The compressor only builds up pressure to 45 psi and constantly runs. The problem started after it was left on for 2 days straight.

Hi thadlewis....

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

0helpful
1answer

Model C2002 type 3 Air leaks from the back of the knob when I turn the regulator to allow pressure to flow to the hose. Air will flow to the hose but I quickly loose pressure due to the air leaking from...

File a complaint with porta cable and also know these compressors have a three year limited warranty. If you have a receipt like I did when mine started leaking only after about a year and light duty and hardly used too.. Anyway , I returned mine for full credit where I bought it. I might try one more but thinking bosch this time. Bosch makes one about the same size and might be made better quality.. I;m going to check their ratings.
2helpful
2answers

My porter cable C2002 Type 3 air compressor will build air in the tank, but I am not getting a pressure reading on the regulator gauge.

I have same problem with my PC2002 type 3 AC and come to find out after removing the know for the regulator, inside there is a spring(remove it),underneath is a seal with a nipple in the center that is used to let the air though. It is made of plastic(so mine broke).Tough job is finding that seal.
0helpful
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1helpful
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My porter cable air compressor won't shut off when it reaches max psi, this is the 2nd compressor I've had this problem with of the same type after about a year of use.

The airr pressure cut off switch is not working or out of alignment. What you can do is to adjust the spring with the air pressure reading at your required pressure. Once this is done allow the air to flow so that the compressor will work again to cur off, you will have to trim once again to set it to the correct condition. If the spring assembly is not working well on pressure you can remove and reset. If the contact are dirty , the switch on may not start the compressor, in such case clean the contacts. But if you think that it is not acting responsive, the please replace the unit and do the settting as explained above.
I hope you try this out. Good day
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It will not build pressure in the tank.

There is a pressure relief valve somewhere around the motor. Make sure it is closed. If the relief valve isnt leaking air while the compressor is running you probably have a loose hose on the line going from the compressor to the guages or the overpressure valve. Something under the motor/compressor cover.
1helpful
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Air leaks via the head so tank does not maintain pressure

The air leak you have described is probably from the unloader valve which may not be seating after it dumps cylinder pressure. If you can find a good manual for it, disassemble the unloader valve and check for contaminates or build up around the seat. The differential spring may have lost it's value also, in which case you will need to replace the unloader assembly.
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