Question about Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated

1 Answer

When stapeling it makes a strange ping noise

When im stapeling 1/4 in subfloor the compressor makes a strange ping noise but then it stops making noise when motor fires up again to build pressure.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 21 Answers

I talked to hatachi about i had a customer that had the same problem.there tech support said that they have had a few of these do this. it is caused by some **** in side the tube connecting the two tanks when it was welded.they said over time it should stop as wares with time.will not harm anything but is extreamly irritating.The offer no solution. which is bull !!!!!!!!!!!

Posted on Dec 21, 2008

1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My compressor making a weird humming noise and not working what could be the problem

Check to make sure you have the right volts comeing to your compressor 120 volt any thing less then 10% can make this happen.Also if your compressor is really old it could be trying to stick aand needs taking apart and cleaned

Mar 26, 2013 | Craftsman 1 Hp, 4 Gal. Air Compressor

1 Answer

My dental compressor stopped working. What can I do?

Does it make any noise at all? If not, check the motor for a protective device. A thermal reset would be a red button on the end of the motor. It may be as simple as that.

If it hums loudly, and turns over by hand- no power applied- with difficulty the motor bearings or compressor bearings may be needing attention.

If it hums loudly and barely turns, but turns by hand freely, the motor has a start/run capacitor- it likely failed. Replacing the capacitor is a simple task- just make sure to replace it with one of similar ratings.

Feb 14, 2012 | Air Tools & Compressors

1 Answer

My compressor stopped working and makes no noise, hum, etc. dead. Is there a breaker reset switch? is it worth repairing?

If you can open the cover, most likely one of three components (on/off switch, pressure switch or brushes ). Parts are cheap and available at

Sep 21, 2011 | Porter Cable C2002 150 Psi 6 Gal...

1 Answer

I have an older model Sears Craftsman air compressor, 1 hp, 100 psi, twin cylinder. Model 106.154541. The compressor comes on fine, but when the pressure gets to 40 psi or so the belt starts to squeal,...

Could be the bearing in the pully wheel rides on,,not the belt,,,While its running spray some belt dressing on belt to see if its the belt,,,while running get a can of wd-40 with long nosel attachment and spray the armeture that tures pully when you spray it if its the bearing it will stop makeing noise momentarly, than come back again than as you spray it it will stop as long as you spray. BE CAREFUL. Bearings wear out when old,,,like us!

Mar 11, 2011 | Craftsman Air Tools & Compressors

1 Answer

My air compressor makes a noise like a lawn mower traying to start after it kicks on, after about 15 or 20 seconds for about 2 seconds and then the noise stops. Dont do it all the time. It runs good pumps...

Isn't the air compressor just charging or is this a new noise that you didn't hear before. If it isn't broke don't fix it. It could be a valve that isn't opening and closing properly. Use a little pneumatic lubricant on any parts you feel confortable getting into. Don't disassemble anything unless you know how to put it back together. Pay attention to direction of valve spools.

Sep 30, 2010 | Ingersoll Rand - Rand Type - 30...

1 Answer

My d55141 compressor that i've had for about 2 years started running non-stop and it isn't building up pressure even though it's running. What could be causing this and how could i fix it?

There are a few things you will need to check.
If the unit is making more noise that it has in the past then the CAC-1212 tube seal could be damaged. If the compressor is not making more noise than normal then you will need to check the piston ring on the piston as well as the both the intake and exhaust reed on the valve plate plate.

Here is a parts diagram for you to view:

Sep 25, 2010 | Dewalt Air Tools & Compressors

1 Answer

Husky Air Compressor has rattlling noise!

buddy im an engineer on these machines for 30 years and when this problem has occured believe it or not but it cheaper to buy another pump unit or compressor plus its the hardest job getting the crank out so your choice bud

Nov 16, 2009 | Campbell Hausfeld 5 Peak / 1.7 Running HP,...

Not finding what you are looking for?
Hitachi EC12 Portable Electric 2hp Air Compressor, Oil Lubricated Logo

168 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1378 Answers

Jim Thurston

Level 3 Expert

669 Answers


Level 3 Expert

98868 Answers

Are you a Hitachi Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides