Hi Stan:
What happens to the drum is the shoes wear the drum where they ride. However, where the shoes don't touch the drum doesn't wear creating a lip on the drum's surface. As the brakes adjust to accommodate the wear, they actually open up wider than the part of the drum that isn't touched. Thus, you can't pull it off. This video can help
https://youtu.be/UV0kfP17Co0
In this case, you need to open the adjuster window on the rear of the backing plate (rubber plug), and using a screwdriver or proper brake tool, loosten the brakes by spinning the self adjuster star in. That will cause the brake shoes to get smaller in diameter. Once you get it smaller than the ridge on the drum, it will come off.
I hope this helps,
Joe
I appreciate positive feedback and votes
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Thursday, February 25th, 2021 AT 8:15 AM