Model #919152922 CRAFTSMAN Air compressor

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  • Compressor Pump
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Question and Answers

Q:

won't pump 919152922 Craftsman Lubricated air compressor

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the compressor. I know how frustrating that is.

Your air compressor probably has something broken inside the cylinder. Disconnect the power to the air compressor and remove the plastic cover around the motor and compressor.

Before you take the compressor apart, listen and feel for air leaks. Check to see if air is coming back out of the intake filter. If air is coming back out of the intake filter, something is wrong inside the cylinder.

Turn the motor shaft by hand and be sure the piston goes up and down.

If the piston is ok remove the 4 screws holding the head on top of the cylinder. Remove the head.

Directly under the head is the pressure plate. The pressure plate has reeds on it that direct the air into the discharge line and keep the air from going back through the intake side of the compressor. Check the reeds for warping or breaking. If the reeds are damaged, you must replace the pressure plate. Make note of how the pressure plate sets and the O-rings. Also check the cylinder for scoring, if there is any scoring, I would recommend replacing the piston, cylinder, and the eccentric bearing for the unit. Chances are it will be an issue with the pressure plate and reed valves.

If you need the rebuild kit, it is part number kk-4835. If you need the valve plate assembly, the part number is Z-AC-0032.

I hope that helps and thanks for using SearsPartsDirect.com. We appreciate your business.

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Jeff Wallace Sr -
Sears Technician
April 26, 2015
Q:

compressor won't pump 919152922 Craftsman Lubricated air compressor

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the compressor. I know how frustrating that is.

Your air compressor probably has something broken inside the cylinder. Disconnect the power to the air compressor and remove the plastic cover around the motor and compressor.

Before you take the compressor apart, listen and feel for air leaks. Check to see if air is coming back out of the intake filter. If air is coming back out of the intake filter, something is wrong inside the cylinder.

Turn the motor shaft by hand and be sure the piston goes up and down.

If the piston is ok remove the 4 screws holding the head on top of the cylinder. Remove the head.

Directly under the head is the pressure plate. The pressure plate has reeds on it that direct the air into the discharge line and keep the air from going back through the intake side of the compressor. Check the reeds for warping or breaking. If the reeds are damaged, you must replace the pressure plate. Make note of how the pressure plate sets and the O-rings. Also check the cylinder for scoring, if there is any scoring, I would recommend replacing the piston, cylinder, and the eccentric bearing for the unit. Chances are it will be an issue with the pressure plate and reed valves.

If you need the rebuild kit, it is part number kk-4835. If you need the valve plate assembly, the part number is Z-AC-0032.

I hope that helps and thanks for using SearsPartsDirect.com. We appreciate your business.

Read More
Jeff Wallace Sr -
Sears Technician
April 26, 2015
Q:

fan make contact with piston/rod

A:

Managemylife.com is always a great resource to find the answers to just about anything. I was unable to locate any information to your question. An expert will research your question and respond within two business days but usually sooner. Have a great day!

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Alina F. -
June 01, 2012
A:

Hello Glenn,

I'm sorry that you are having a problem with rebuilding your air compressor. The rod should not make contact with the back of the fan unless either the fan is warped and / or not seated correctly on the shaft, or, the rod and bearing assembly are not seated or installed correctly.

I would advise looking at the lower part of the pump, at the connecting rod and bearing assembly, from the side. The rod should go straight up to the cylinder and not be angled at all. It is possible to not get it pushed onto the motor shaft enough, or too far, and cause a little angle to be induced on the connecting rod. This is very hard on the assembly and should be corrected immediately if evident. I would take note of what point the fan contacts the rod and carefully observe for any defects.

Some models also require the crank to face a certain direction. Most of that type will have something to the effect of "This Side Out" cast into the side of the rod. If no printing is found, I would still advise looking closely at the rod assembly to make sure that it is not offset to one side of the centerline of the bearing or piston.

I verified that the correct part number is A02743 for the rod, piston and cylinder kit with bearing. KK-4835 is the kit without the rod bearing installed in it. Sears Parts Direct is a direct link to parts for your pump.

Please let me know if I can be of any further assistance.

Jerry C

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Jerry C -
Sears Technician
June 04, 2012
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