I have a Kenmore front loading washing machine (model 110.42822201). Using the great information I found on Appliancepartspro.com, I confirmed that I needed a new pump assembly. I ordered a new pump from the site. I then found a possible cause for the pump failure was a high build up of nasty "gunk" in the drain hoses.
While waiting for the ordered pump to arrive, I removed the black rubber drain bellows containing the ball check valve going to the inlet of the pump, the drain hose going from the output of the pump to the plastic elbow going to the discharge outlet on the back of the washer, and finally the black discharge hose outside of the washing machine to carry the waste water to the sewer.
Using a three foot length of small chain with an old rag wired to one end, I managed to feed it through several times to clean all the nasty "gunk" out of the drain hoses. The check ball was really coated in a big blob of nasty slime. No wonder the pump failed trying to push water out of the hoses. The pump arrived earlier than scheduled. Additional rubber parts were included for my model and installation was easy after viewing the pump installation video conviently posted on the Appliancepartspros.com site.
The washer worked perfectly after I reinstalled the hoses and both top and lower bottom front panels I removed for the repair. I think I should be good for another 10 years of washing. I am a very pleased customer with the technical advice posted here, the do itself videos, and the availability of parts for my appliance. My wife has now done about 15 loads of laundry since the repair and no issues with SUD or "F" error codes.