Reed valves - is it OK to use lock tite?

Do I need to use lock tite on the screws that hold the reed valves in place on the valve plate on a Porter Cable air compressor.


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Bill says...

G'day. The lock tite will help the screws stay tight in the face of a lot of vibration from the running of the air compressor.

If it were me re-building my compressor and was re-threading the screws through the valve into the head, I would sure use it.

I would be a bit careful of is the heat resistance of the lock tite. If it wasn't suitable for higher heat applications, you would want to get a sealant that was.

I don't know what Porter Cable says, but I'd use it.

Cheers,

Bill

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portor cable air compresser

by Paul
(Greenville ,Texas)

I got 1 givien to me without the wire
I got a wire can anyone tell me how to wire it up.






Bill answers...

Hi Paul:

That's difficult to do by discussing your compressor on line.

My suggestion is that you go to your local compressor store and take a look at how their DIY type compressors of the same size are wired.

Get the sales clerk to take the cover off the pressure switch so you can see the wiring pattern to copy.

Be very careful you don't do yourself a damage, hear?

Cheers,

Bill

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porter cable air leakage

I have a porter cable 6 gallon pancake air compressor, after reaching maximum pressure and shut it off, there is air leaking from the piston area.

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Bill says...

Can you please be more specific as to where the air is coming from?

Is it coming out the intake port? I don't know where else air would leak from the "piston area"?

Bill

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Nov 28, 2011
Air leakage
by: Chuck

Bill,

I also have a 6 gallon pancake Porter Cable air compressor. It leaks air at the point where the steel tube comes from the head of the piston. Tried replacing small rubber gasket, but with no luck. The air leak is a steady leak. It will takes the tank from 120 PSI to 20 PSI in 10 minutes. When it tries to restart, it sounds like it takes a couple of revs and then quits. After a few false starts, the motor will kick in and pump the tank back up to 120 PSI. It puimps it up to where the hi pressure switch turns it off. Funny thing though, sometimes it doesn't leak. About 10% of the time. Most curious.

Thanks for your help.

Chuck

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From the number of complaints, this might be a design flaw issue. Go to the plumbing store, and get fittings and copper tube of the same diameter and replace the OEM equipment. Use the same fitting that goes into the tank though, as this might be the check valve too.


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only build up to 40 ibs.

cpf23400s porter cable replaced cylinder kit and o rings still only builds up to 40 lbs

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Bill says....

The symptoms suggest a leaking gasket or valve leakage.

Cheers,

Bill

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Apr 24, 2011
Not enough pressure..
by: Anonymous

Also check the reed valves in the cylinder heads, you may have a leaky valve or a cracked reed, or simply oil build up dirty valve sealing surfaces.

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compressor will not shut off at peak pressure?

by Bradley
(Colville, WA)

The gauge

The gauge

my porter cable job boss has a broken gauge before the shutoff valve. the gauge seems to have spun all the way around at no pressure. will this cause it to not shut off at peak pressure?

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Bill says....

Two suggestions. One, go to the GAUGES page and watch the (OK, I'm biased) really informative video I recently uploaded to help folks like you to get a better understanding of what gauges do.

And two, your compressor has at least two gauges. Both should be in good working order for the reasons outlined on the Gauges page and video.

Cheers,

Bill

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porter cable - time to fill

Hi -
i have a brand new porter-cable, 5 gal tank, 150psi.

I read on your site that you estimated your 100 gal tank to fill (I'm assuming this means the "cut-out" time) in about 18 minutes.

Since mine is small, i thought it would go faster. But since it is brand new, maybe not.

It's been on for almost 20 minutes and still running. When i turn the regulator up from zero it only goes to 20psi. The "tank pressure" gauge is still at zero.

this is my first compressor, so maybe i don't know what i'm doing.

thanks in advance,
k

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Bill says...

Your tank should fill to cut out in a few minutes, at most.

Check to make sure the tank drain is shut. Check to make sure the PRV isn't open.

You either have a leak big enough that the compressor pump can't overcome it past the 20 PSI level, your valves aren't working properly, or you may have a gasket leak.

If it's a brand new compressor, and it isn't losing air anywhere, take it back to the store. I think it's flawed.

Cheers,

Bill

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Won't hold pressure - bleeds to zero PSI when shut off

by Tony
(Cocoa Fl)

It builds pressure just fine but bleeds down to zero psi when you turn it off. You can hear it bleeding from under the cover not from the relief valve.

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Bill says...

Hi Tony:

When your compressor shuts off, it automatically opens the unloader valve, to bleed air off the top of the piston to help make it easier to restart the compressor.

The unloader valve is open all the time the compressor is off.

What keeps the compressed air in the tank when the compressor is shut off is the check valve.

Have a look at details of what and where this is on the Check Valve page linked from the site map.

Cheers,

Bill

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Air compressor regulator issue.

I have a Porter Cable compressor CPF23400S. It has a manifold that accepts a pressure guage, the regulator, and 2 output ports. I started having a serious air leak at the regulator valve. I sent off for a replacement. What I received was a regulator that looks identical to the original, but it came with a small manifold with a port for the pressure guage and a port for the output. The supplier noted this was an acceptable replacement. So, I removed the new regulator from its manifold and mounted it in the multi-port manifold of the original unit. I continue to have air leak and output pressure is not regulated, it continues to rise with the tank pressure.

Is there some procedure that needs to be followed to install a new regulator other than just screw the thing in? Can you direct me to such a procedure? Is this a job for a trained professional?

I appreciate your help.

barry






Bill answers...

Hello Barry. Good to hear from you.

Pretty much everything you need to know about regulators can be found right here.

I note that standard pressure regulators are relieving type. What that means is covered in the regulator section.

If you put the regulator on backwards, then it's possible that it would be relieving all the time.

Check out the regulator page and bone up. And no, it doesn't take a professional to install a regulator. They are not complex devices.

Cheers,

Bill

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portercable compressor runs to 80 lbs, then cycles off and on trying to get to 150

by mark
(ft worth tx)

porter cable compressor runs to 80 lbs, then cycles off qnd on a few seconds trying to build to 150 psa

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Bill says....

Hi Mark.

It's your pressure switch that controls the flow of electricity to your motor. When the air pressure in the system falls to cut in pressure level, the pressure switch trips, and allows electricity to get to the motor circuit to start the air compressor.

The pressure switch senses the pressure in the system, and when that pressure reaches the cut out pressure level, the pressure switch trips again, and shuts off power to the motor, stopping the air compressor.

That your air compressor is tripping off at 80 PSI suggests to me that your pressure switch has failed, or is failing.

If you have the skills to bypass the switch and send power to the motor, try that. If the pressure builds past the point where it was shutting off before, then it's likely the compressor pressure switch that is your compressor problem. Careful you don't run the pressure too high.

Cheers,

Bill

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