Model #106172440 CRAFTSMAN Air compressor

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Question and Answers

Q:

Compressor tank does not fill 106172440 Craftsman Sears single cylinder tank type compressor

A:

Thank you for choosing SearsPartsDirect.com. I will be more than happy to assist you. I can understand any frustration you may have experienced with regards to your unit. Let’s see what we can do for you.

I’m showing that with this air compressor there could be a number of issues. There could be an issue with the compression rings, piston, cylinder, valve plate, gaskets, and O-rings. The main things would be the Flapper valve, and all the gaskets/O-rings.

I know finding part for this will be hard, but there are a lot of other products that are out there that possibly use the same stuff. You are just going to have to do research to find witch models are similar in that fact. 

Hope this information has helped you. If you are not comfortable doing this repair you can click here to schedule a technician or call toll free 1-800-469-4663. Again, thank you for choosing SearsPartsDirect.com.

 

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JeffwallaceIII -
Sears Technician
April 29, 2015
Q:

What type of oil do I use in the compressor? 106172440 Craftsman Sears single cylinder tank type compressor

A:

The compressor pump will use 30weight non-detergent motor oil. Make sure it is non detergent oil, otherwise the oil will foam up and cause problems. I cannot find any listing of how much oil this pump takes. There should be a pipe plug on the side of the pump to put oil in, fill the pump until oil runs out of that hole and then it's full.

Thank you for using Manage My Life!

Mark
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Mark T -
Sears Technician
September 26, 2013
Q:

Air compressor motor locks up on Air Compressor

A:

I'm sorry about the difficulties you continue to have with your air compressor. While you are waiting for an expert to respond, I have attached some helpful links below that may provide information to assist you with your question.

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Yadira B -
January 09, 2013
A:

Hello Dennis,

I'm sorry to hear that your compressor will not start and I would like to assist you. The usual cause of the issue that you have described is a failure of the check valve where the pressurized air from the compressor enters the tank. This is designated as item number 47 in the drawing, but is no longer available. It may be a good idea to let all of the air out of your compressor and then remove the existing one and check if for trapped debris or corrosion. This check valve closes when the pump stops and the remaining pressure in the line will bleed back through the pump slowly. One of the symptoms, other than the hard starting with pressure in the tank, is that the compressor may not hold pressure as long as it normally would such as overnight. If the check valve has failed and cannot be cleaned well enough to work, we may be able to find some type of replacement, but it may be a very difficult task.

Please let me know what you find and I'll be happy to assist you further.

Jerry C

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Jerry C -
Sears Technician
January 10, 2013
A:

The Check valve and unloader I installed, (No. 47 from the parts list), was brand new two days ago. I believe the insides would be like the second defective one I installed 5 years ago.The 5 year old one, never really worked properly. It is two brass fittings with a spring and plunger inside, and a small rubber seal on the end that goes into the tank. The small rubber seal on the end that goes to the tank, is a different design than the original 1978 one. Is there a special way this should be installed, so the plunger always stays free? There was no evidence of corrosion or damage, but the plunger did seem to hang up slightly but I did not try to take it apart because I did not want to damage it. . The plunger does not stick on the old one, but I suspect the reason it had to be replaced is because the o-ring had worn so it would no longer sealed. Maybe Sears should send me a free replacement for the one I bought this summer and installed two days ago. What do you think?

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Dennis -
January 10, 2013
A:

Hello Dennis,

I missed that you found a check valve in your original post. The valve should close off pressure from the tank. If it does not close, the hard to start with pressure in the tank issue will usually occur. I have worked on ones that stayed in a closed position until incoming air opened them up. The spring had enough force to hold the plunger down, but when air came from the pump it could easily push through. As soon as the pump stops and the air from the tank presses against the valve it causes the valve to form an airtight seal. I would look closely at the one that you have to be certain that it is installed in the correct direction. Yours may work a little differently and I can see if there is any information available on it once the direction has been verified. Any images that you can attach of it would be great too. If you want to find out about a refund for the check valve, you will need to contact Sears Parts Direct to speak to them about that.

Jerry C

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Jerry C -
Sears Technician
January 10, 2013
A:

I will take the check valve out this weekend and check to see if the plunger is free of if it acts like it sticks. From what you say above, I think if I blow air with my mouth into the bottom of the brass fitting that screws into the tank, the rubber seal at the botton of the plunger should seal shut and not air should pass further to the second brass fitting to which the air tube from the compressor cyl connects. Is this correct?

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Dennis -
January 11, 2013
A:

Hello Dennis,

That is an idea and I have tried it, however, some types will kinda give a false reading on the test because blowing into it does not develop enough pressure to truly cut off the air. This is a very good start on a work-through though and please let me know how it goes and we'll go from there. I cannot tell you how to modify your compressor, but there are inline types of check valves that other compressors use and searching for them on the internet may give you some ideas.

Jerry C

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Jerry C -
Sears Technician
January 11, 2013
A:

Dear Jerry C, Success! I found that the new check valve stuck in the fully open position. This is the position when compressed air is forced into the tank. When I removed the air supply tube , I noticed the check valve would seal off the air in the tank. I was able to rotate the plunger 1/4 turn with my fingers holding onto the rubber seal at the end of the plunger. In this position the plunger does not stick , and the air compressor works. So thanks to your advice and suggestions I hope to have many more trouble free years of service. Dennis

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Dennis -
January 13, 2013
A:

Hello Dennis,

That is great news! Your persistence paid off and your compressor is working again. Please come back to managemylife.com for your future needs.

Jerry C

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Jerry C -
Sears Technician
January 14, 2013
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