Ge motor 5kcr49sn2021y

SOURCE: Sears Craftsman 3-Gallon, 1.5 HP Air Compressor Hums

YES IT MAY BE THE CAPACITOR . IT COULD ALSO BE THE WIREING IN THE MTR, THE PUNP ITSELF.

SOURCE: need help wiring new pressure switch for craftsman air compressor

Assuming that you are wiring for 115v. Lets start with the ground. The cord that attaches to the wall outlet will have three wires, green, black , and white. Insert the cord thru one of the openings of the pressure switch and attach the green wire to the ground screw. Next look very closely at the contacts and notice that they are arrainged in pairs. There is a small brass bar with two contacts that completes the circuit for each line. Start with L1 and attach white wire from cord, then attach white wire from motor to the screw terminal that small brass bar bridges to (should be T1). Next attach black wire from cord to L2 and black wire from motor to remining screw. Remember that the small brass bar with two contacts is the bridge and simply connects white to white and black to black. Enjoy

SOURCE: Oil capacity for craftsman air compressor circa 1978 model #106..

I have a 2hp craftsman air compessor with a two cylinder pump, Here is the info from my manual as far as oil capacitity:

Remove oil fill plug and slowly add
a compressor oil until it is even with the
top of the oil fill hole. NOTE: Do not
allow oil to be lower than 3/8"
from the top at any time. When filling
the crankcase, the oil flows very slowly
into the pump. If the oil is added too
quickly, it will overflow and appear to
be full. NOTE: Crankcase oil capacity is
approximately 16 fluid ounces.

I buy my compessor oil from Lowes in the tool department. It comes in 16oz and sells for about $3. I wouldnt worry about how many ounces it holds but rather that the oil level is to top of filler hole. Lowes also sells a synthetic oil for about $7 and is recommended for severe conditions (hot / cold / used all day). Good Luck!

SOURCE: craftsman aircompressor bogging down

Yes , the check valve will cause this. The check valve has a flat disk with a spring that holds it down that the air passing past it erodes away till it leaks then the air that the piston pushes into the tank does not stay in the tank but returns right back into the cylinder and puts a load on the piston. Also makes the compressor hard to start back up if it does get pumped up. Some have a dump valve that drains the pressure off the head after they shut off so it can start with no load. So if there is air bleading back and leaking at the pressure swith that will be a for sure sign it is the check valve.

SOURCE: Wiring diagram to convert Craftsman 5HP Air compressor

look on the motor cover or on the wiring cvr on mtr or on the inside of the wire termination cvr