Model #919177541 CRAFTSMAN Air compressor

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Question and Answers

Q:

What is the torque requirement for the head bolts on my Craftsman compressor model 919.177541?

A:

The head bolts should be torqued to 7 - 10 foot pounds.

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Lyle W -
Sears Technician
March 14, 2010
Q:

air compressor model-919177541

A:

Thank you for your question.

I had the same compressor and still worked great when I sold it to upgrade. We do not have the oil capacity on this compressor. I will be able to assist you. After the oil is drained, reinstall the drain plug and remove the fill plug. Then add oil until it is to the top of the oil plughole. Then reinstall the fill plug. Besides changing the oil check the condition of the belt and drain the water out of the tank.

Please let me know if you need further assistance.

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
July 24, 2011
Q:

Air Compressor pressur release tube leaking

A:

Thank you for your question.



Jay, I think you have it figured out. The tank has a check valve that allows air to enter the tank but not come out. If air continues to leak out the problem is the check valve. You might be able to clean it and get it working. I posted an image below that shows how to clean it. Just click on the image to enlarge it. If it still leaks, you need to replace the check valve. The part can be ordered from the following link. Craftsman compressor parts



I hope this is helpful. Please let me know if you need further assistance.

Thank you for using Manage my life.



Mark.

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Mark T -
Sears Technician
June 20, 2012
A:

Thank you for your question.



Jay, I think you have it figured out. The tank has a check valve that allows air to enter the tank but not come out. If air continues to leak out the problem is the check valve. You might be able to clean it and get it working. I posted an image below that shows how to clean it. Just click on the image to enlarge it. If it still leaks, you need to replace the check valve. The part can be ordered from the following link. Read More

Mark T -
Sears Technician
June 20, 2012
A:

Jay,

The valve on the side of the switch is called the pressure relief valve. This valve is activated when the compressor is turned off. When the compressor turns off the tab pushes on the needle to bleed the pressure in the line so the compressor can start without a load. If air continues to leak out of the relief valve, the problem is with the tank check valve. This is a one-way valve, which allows air into the tank but not out. If air continues to leak out of the relief valve, the tank check valve is not sealing. When this happens, the pump and tubing stay pressurized and leaks out the pressure relief. The first image shows how to clean the check valve. It looks a different form yours but does the same. If you do not see a stopper in the check valve, it should be replaced.

I hope this is helpful. Please let me know if you need further assistance.

Thank you for using Manage my life.

Mark.

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Mark T -
Sears Technician
June 21, 2012
A:

Jay,

Thank you for adding the pictures. That is the check valve. The threads on the end of the valve should have a spring that holds the rubber cone in place. The cone and spring fell into the tank. Do not worry about them they should not cause any problems. To repair this you need to order a new check valve. The part number for the check valve is CAC-437-2 and can be ordered from the following link. Craftsman air compressor parts

Then new check valve will look different from the old one but functions the same. The image below shows the new check valve.

Please let me know how this works out.

Thank you for using Manage my life. Mark

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Mark T -
Sears Technician
June 24, 2012
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