TIL that adjusting the door hanger roller depth by 1/8 inch fixed a chronic leveling issue

Had a 2017 Otis Gen2 in a 12-story building in Austin that kept throwing door fault codes every three weeks. After replacing the belts and track sensors I was still getting complaints. I finally grabbed my feeler gauge and found the top roller was sitting 1/8 inch deeper than the bottom one. Has anyone else had to shim those Gen2 hangers to get them to track straight?

3 comments

3 Comments

park.miles1mo ago

Claire is right, the Gen2 switched to top rollers only. I've shimmed a few of those hangers on the same model in a 15-story building in Dallas. The 1/8 inch difference is a common issue if the track gets slightly bent or the hanger bracket wears unevenly. I ended up using thin brass shims behind the top roller bracket to get both rollers tracking level, and it stopped the door fault codes completely. That adjustment is a real time saver once you know to check it.

claire_davis311mo agoProlific Poster

Just a heads up, the Gen2 uses top rollers only.

river9521mo ago

Wait, is that really true for all of them? I thought the Gen2 kept the bottom rollers like the old ones. Claire, are you sure about that? I haven't cracked one open yet but that would be a weird change. Maybe they got tired of dealing with the bottom track issues. Good to know though, I'll have to watch for that on my next call.