the tube that goes up the back of the ice box is blocked ( this may require that you defrost the box
remove the bottom of the freezer and clean out the drain
did you check the resevoir in the fresh food section it may be frozen. There is also a possibility that this refrigerator has a dual valve one sends water to the ice maker the other to the water dispenser it may be bad. I tried to look it up but the model number listed would not come up I think you are missing numbers best to get a complete model number from the refrigerator not the manual.
Coldspot 106. Model
This model refrigerator is a relatively small refrigerator. It is a Freezer on top model, and Sears documents lists this unit at 18.1 cu ft. I hope that answers your question about capacity.
I'm glad I could help. If you need anything else, just let me know.
In reality, when you buy a replacement, you buy by dimensions to fit the space not cubic feet of the old one. Go to Home Depot armed with a tape measure.
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Turn it off by removing the wall plug for 10 minutes. This will do a power rest to the control electronics. This is a bottom mounted freezer, so cold air for the fridge is vented upwards by a fan. Make sure it is running and there are no ice blockages. Strangely they call the fan in the fridge an
Refrigerator Evaporator Fan Motor. The part is obsolete anyway.
If it normally says 4 for the fridge, that would be 4 degrees Centigrade, which means the freezer should show minus 18'C. Or 36'F Fridge / 0' F Freezer/
This shows all the parts.
https://www.searspartsdirect.com/model/3tradtge4f-000582/kenmore-79575004401-bottom-mount-refrigerator-parts
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Not normally a flapper. There is a trap on the rear outside cabinet just below the level of the freezer. Remove it and soak in hot water and bleach for 20 minutes, then flush all the debris out, shake it dry and reinstall.
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Put some Vaseline on the O-Ring to help it slide into place. Make sure it is properly inserted at the beginning.
If the filter is located inside the refrigerator:
Turn off the ice maker.
Push the eject button.
Pull the filter out of the housing.
Push the new filter into the housing until it clicks.
Turn on the ice maker.
Run 2 gallons of water through the water dispenser to purge air and residue.