This dryer was making a loud knocking noise. I thought there was to much play in the rear bearing, so I replaced it. Front drum slides exhibited no cracks and appeared to be sound. Now it is making on intermittent hammering sound. I don’t have any more ideas and would appreciate anyone else’s. Thank you.
If the Vanes are loose, or if something gets inside vanes, this could cause the issue. an idler pulley worn, motor bearing issue, or drum rollers. I have seen the drum jumping on these after the front glides get debris on them. It can cause the drum to chatter instead of gliding on the front bearing. A worn blower will make a hammering noise upon start up and shutdown. We have had a couple where the rear motor mount screw sheared off, drove us crazy, check the rear motor mount where it mounts to the bottom of the cabinet, if it’s loose, we used a self tapping screw in a different area to secure.
- AV Repair Help answered 9 years ago
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