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Compressor leaking oil

Compressor is leaking oil out inlet when compressor is shut off.

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  • Air Tools & ... Master
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What is the make and model?

Posted on May 06, 2013

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6 Suggested Answers

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 1388 Answers

SOURCE: air compressor leaking

The problem that you are having is caused by the in tank check valve not holding the tank pressure. Simple test is to carefully loosen air-hose that feeds air to tank and check for air leaking. Replace check valve if leaking. Generic parts may be used. Enjoy

Posted on Dec 07, 2008

  • 104 Answers

SOURCE: compressor oil

PLease contact IR http://www.irtools.com/serviceandsupport/techpubs.aspx

and direct this question to them. You do not want to make a mistake here as it will cost you a compressor. I would only accept what IR says is acceptable

good luck

Posted on Mar 17, 2009

  • 1388 Answers

SOURCE: AIR LEAK ON CRAFTSMAN AIR COMPRESSOR, 3HP,25 GAL, HORIZ TANK

The needle valve that you see is the unloader which releases air pressure from the discharge line after set pressure is obtained. If air continues to leak after the compressor shuts off, the check valve installed in the tank is leaking air out of the tank. Follow the air discharge line from the compressor to the tank. There you will find a brass valve which is the check valve. Simple test is to remove the smaller airline (1/4") from the brass valve and check for air leaking. If leaking remove brass valve and check for debris under the white seat. If you cannot clean the valve, replace with generic check valve from www.grainger.com. It will cost less than factory part. Just order the valve considering the fitting sizes that you need. For exact replacement,( www.sears.com parts). If you sears model # begins with WL then your compressor is made by campbell hausfeld and parts may be ordered from www.chpower.com. Good Luck with you repair and email if you have more questions.

Posted on Mar 21, 2009

  • 1 Answer

SOURCE: Ingersoll rand compressor oil leak (Model DD2T2, 4.5 Gal.)

The brass fitting that goes into my DD2T2 seems to have a hole in it and it looks impossible to remove without ruining a major gasket due to the close tolerance in replacing the fitting. Am I missing something?

Posted on Sep 15, 2009

  • 50 Answers

SOURCE: Craftsman 3 gal., 1.5 hp air compressor: won't

The compressor will not auto shut off until it reaches the preset pressure which is usually around 100-130 psi - your problem is leakage of air from the oil filler cap suggesting that you have a failed internal valve.

Posted on Sep 24, 2009

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My Porter Cable pancake air compressor is getting too hot and melting my air hose


ASSUMING THIS IS AN ELECTRIC MOTOR DRIVEN SINGLE STAGE COMPRESSOR, IF THE COMPRESSOR USES OIL IN THE CRANKCASE, THE PRESSURE SWITCH SHOULD CUT OFF AT 125 PSI AS THE ACT OF COMPRESSION HEATS THE AIR QUITE HOT. THERE IS ALWAYS SOME OIL THAT PASSED THE PISTON RINGS IN THE COMPRESSED AIR. IF THE COMPRESSED AIR GETS HOT ENOUGH, THE OIL VAPOR CAN IGNITE AND THE FLAME CAN CARRY TO THE TANK FOR AN IMPRESSIVE EXPLOSION. THIS ORDINARILY DOES NOT HAPPEN BELOW 175PSI OR MORE.

OILLESS COMPRESSORS CAN BE SET TO 150 PSI. WITH EITHER TYPE OF COMPRESSOR, THE HOSE SHOULD BE ATTACHED TO THE REGULATOR OR THE REGULATOR STACK, NEVER TO THE COMPRESSOR, AS THE COMPRESSED AIR LOSES MUCH OF ITS HEAT WHILE IN THE RECEIVER. IF THE WHOLE TANK IS GETTING HOT ENOUGH TO MELT A PROPERLY ATTACHED HOSE, YOU HAVE A DANGEROUS SITUATION, CHECK THE OPERATION OF THE PRESSURE SWITCH, UNLOADER VALVE AND RELIEF VALVE. THE RELIEF VALVE SHOULD OPEN AT NO MORE THAN 150 PSI, THE UNLOADER VALVE OPENS WHEN THE PRESSURE SWITCH SHUTS THE MOTOR OFF, AND SHOULD ONLY HISS FOR A FEW SECONDS AS IT DUMPS THE PRESSURE ONLY IN THE COMPRESSOR AND THE LINE FROM THE COMPRESSOR TO THE TANK INLET CHECK VALVE. IF THE UNLOADER VALVE HISSES MORE THAN A FEW SECONDS, THE TANK INLET CHECK VALVE IS LEAKING AND NEEDS TO BE SERVICED, CLEANED OR REPLACED. IF THERE IS CARBON BUILD UP IN THE VALVE, THERE IS EXCESS OIL PASSING THE COMPRESSOR PISTON RINGS, REPLACING THEM MIGHT FIX THAT IF THE CYLINDER OR RING LANDS ON THE PISTON ARE NOT TOO TAPERED OR WORN.

Jan 25, 2016 | Porter Cable Air Tools & Compressors

2 Answers

How can i fix my ec12 hitachi electric air compressor


This problem is caused by either the starter capacitor or the in-tank check valve. Ez to check. With no air in tank, start compressor; if motor hums or has difficulty suspect capacitor. If motor starts, partially fill tank and unplug the power. Check for air leaking at the pressure switch or air coming out of the air inlet (remove the air filter). If air leaking, replace check valve. If no air leaking, again let out all the from the tank and connect power. Allow the compressor to fill and shut-off. After the compressor fills, again listen for air leaking from the pressure switch unloader valve. If air continues to leak from unloader, replace the check valve. Good luck

Jun 11, 2015 | Hitachi EC12 Portable Electric 2hp Air...

2 Answers

Pump is not shutting off, and pressure not building up


Hi Kendal

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
Bud

Nov 01, 2012 | Campbell Hausfeld 26 - Gallon Air...

1 Answer

I have an Ingersoll Rand EP30 air compressor which has emptied its coolant out of the air inlet onto the floor. What are the probably causes and their remedy?


The unit was not turned off correctly or it shut itself down due to high temp or other problem what happens is that when the compressor is loaded (producing air) the inlet valve is open which if shutdown the pressure withing the compressor will escape through this open inlet valve which will contain oil also

Apr 29, 2012 | Ingersoll Rand Air Tools & Compressors

1 Answer

Ok....My compressor knowledge and terms of parts is very weak...So I will try my best to describe my problem....When I bought the Campbell 8 gallon compressor, and when I started to use it, in the...


The compressor will fill slowly if there is a leak at a fitting or pressure leaking back from the checkvalve. It will also fill slowly if there is a worn / broken reed valve/s and or leaking gasket in the head. Try easy test first. With compressor running and air filter off, spray soapy water on all joints looking for leak (also spray on head of pump to check leaking bolts /gaskets). If leaking, repair as needed. If no leaks are found with soapy water, stop compressor and listen for leak at the pressure switch unloader valve. If no air appears to be leaking from the compressor then most likely problem is with reed valves or gasket in the head. Remove head very carefully trying not to tear gaskets. Examine reed valves for broken parts and or burned /broken gaskets. If gaskets or reed valves are bad, the discharge air tube will be very hot. Repair as needed. Good luck

Jan 18, 2011 | Campbell Hausfeld 8GAL Air Compressor

1 Answer

I have an 80 gal Craftsman air compressor who just shut down, the pressure is dropping, it made a smoke smell and it blew my circuit breaker. I tried starting my circuit breaker but it kept flipping off....


Usually related to the in-tank check valve. Follow the discharge hose from the pump to the tank. At the tank the hose attaches to a brass valve (or metal valve). This brass fitting is the check valve. It's purpose is to hold air in the tank and not allow the air to load the compressor when motor is trying to start. Easy to test. Use another compressor to pump air into your tank thru the quick disconnect or remove the safety valve and install hose there. Pump in about 75 psi and looks for leaks with soapy water. Remove air inlet hose from check valve and check for air leaks. If leaking, replace with generic valve available at www.grainger.com or order from sears parts. If no leaks then suspect unloader is not working at the pressure switch. If both the unloader and check valve is ok then test capacitor for reading within 95% of rated valve. Good holidays

Dec 14, 2010 | Craftsman Air Tools & Compressors

1 Answer

What is the solution when a ingersoll rand compressor model EP 25 is turn off and then this one made leave out the oil through of the inlet valve ?


Depends on the inlet valve of your air compressor, if it is a total closure type ( flat plate that closes completely) it is either a failure of the inlet valve seals or the control solenoid or other valve that controls the inlet valve.

If it uses a butterfly type inlet valve it is one of 2 things,,,, first if is spun slow after shut down and just oil was lost, the oil stop valve failed to close, if it spun fast and a combination of oil and air was discharged it was a stuck open air end discharge valve.

Feb 15, 2010 | Ingersoll Air Tools & Compressors

1 Answer

Craftsman 3 gal., 1.5 hp air compressor: won't auto shut off, builds only 40 lbs pressure, air leaks from the 2 holes in oil filler cap?


The compressor will not auto shut off until it reaches the preset pressure which is usually around 100-130 psi - your problem is leakage of air from the oil filler cap suggesting that you have a failed internal valve.

Sep 24, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

4 Answers

When shutting down the compressor, oil comes out intake filter


hi there,
well,if your air compressor was shut off this due to pressure switch w/c auto switch off your compressor,the pressure switch acquired already the cut off pressure.if the pressure goes down the cut in set up reached it will start your compressor
to run.
regarding oil spillage when shutting down check the oil level on the sight glass of crankcase
a red line indicate oil should not exceed on that level line,if the oil exceed try to drain oil.,on the side bottom of engine there is a drain plug.until on limit level .,besure that machine is shut off/breaker is off.have a nice day don't forget to rate me,thank's

Apr 28, 2009 | Ingersoll Rand Type 30 Electric Driven Two...

1 Answer

Compressor builds pressure, but does not shut off


Hitachi builds a very nice compressor, however suffers from the same problem that all brands will eventually encounter. Failure of the pressure switch. The pressure switch is a very hard working component of the unit. Depending on use, the pressure switch may cycle from as little as two or three cycles a day to as many as dozens per hour. The pressure switch has springs, contacts and unloader features that eventually wear out. The two most common failures are the contacts and the rubber diaphragm that acts against the springs to shut the unit down. Sometimes the screws securing the base of the switch the inlet port come loose and cause the problem that you are having. (The rubber diaphragm is between the base inlet port and the switch) Simple test is to spray soapy water around base of switch to check for leaks. Replace the switch as necessary with a SquareD brand available at www.grainger.com instead of factory unit to save money and increase life. You may have to make simple modifications however the money saved will be worth it. Choose a pressure switch with cut-off range between 120-139 psi. The higher the cutout switch setting you choose the shorter lifespan for your compressor. Your compressor works harder and gets hotter when achieving higher pressures. Try to use either no extension or shortest cord possible to max life of unit and compressor oil instead of motor oil to prevent carbon deposits. Good luck and email if you have questions about your Hitachi.

Feb 10, 2009 | Hitachi EC12 Portable Electric 2hp Air...

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