LiftMaster garage door grinding noise, but works. : HomeImprovement


Howdy! I am troubleshooting my very loud garage door opener. It opens and closes just fine, but has a loud grinding noise coming from the main unit. Chain is taught with no sag, I used a spray lube (actual lubricant, not WD40) to no avail! This has been an issue since moving into the house (~2 years).

Thoughts on what my first step should be to quiet this monstrosity?

https://imgur.com/gallery/XzpdlSE



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