Model #919166441 Craftsman air compressor

  • Air Compressor Assembly
    3 Results
  • Sub Pump Assembly
    3 Results

Question and Answers

Q:

Need to know how the outlet tube A05346 fits into the cylinder head and stays in the cylinder head on my air compressor model # 919166441

A:

Thank you for your question. I have checked on your model and the tube really is not held in place with a mechanical fastener. The tube has a seal that sandwiched between the valve plate and the head. I have provided you with an image below showing the parts break down. To reinstall the tubing I recommend ordering a new seal and head gasket. Remove the four bolts in the head. Install the new seal onto the tube and insert the seal into the head. reinstall the bolts and toque the bolt to 49-55 inch pounds. If you need further assistance, please submit more details.

Thank you for using Manage My Life.

Here is a link to order the parts you need. Sears Parts Direct .

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Mark T -
Sears Technician
August 28, 2010
Q:

air compressor wont build pressure past the regulator setting. never reaches its cut out point

A:

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.

You can see a parts diagram at [www.searspartsdirect.com]. The parts diagram will help you locate the parts that build air pressure. These are the parts you need to inspect.

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 that seal around it.

Remove the pressure plate and inspect the plastic sleeve inside the cylinder. Look for scratches or cuts in the sleeve. Make note of the piston and the rubber o-ring around it. If the o-ring is worn of broken the air goes back through the intake filter and no pressure is built. If you have to replace the o-ring, replace the piston and sleeve also.

To replace the o-ring and sleeve, you have to remove the nut that holds the piston to the motor shaft. When you replace the nut you must torque it to 85-90 foot pounds. Torque the head bolts to 7-10 foot pounds.

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Jimmy K -
Sears Technician
July 20, 2010
Q:

Craftsman 15 gallon oiless compressor 9 years old won't build up pressure past 90 psi

A:

Thank you for your question on the air compressor not getting above 90 psi.

Please make sure the air compressor is unplugged before you service it.

You will have to remove the black plastic shroud over the motor and pump assembly to check to see if any bolts have loosened up and is leaking when it gets to that pressure.

It is also possible that the piston ring is not sealing as good as it did when it was new and or the reed valves are not closing completely and leaking by.

Please let me know what you find out after you remove the outer shield.

Sam A.

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Sam A -
Sears Technician
December 03, 2012
A:

Terry, I am sorry you cannot see the links. If you are viewing the question on the searpartsdirect website, the links do not show for some reason. I recommend copying and pasting the following address in your browser. http://www.managemylife.com/mmh/questions/326908-craftsman-15-gallon-oiless-compressor-9-years-build-pressure-90-psi Once on the site you will be able to click on the links. I hope this is helpful. Please let me know if you need further assistance. Mark

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Mark T -
Sears Technician
March 25, 2013
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