Warning: Don't trust the old prints on a 90s Otis Gen2 without checking the sheave grooves first.

Had a call for excessive vibration on a unit in the downtown library. The prints said the sheave grooves were standard, but after three hours of chasing other issues, I finally miked them. They were worn almost 1/16" deeper than spec. Threw on a set of oversize belts as a temp fix and the noise stopped immediately. Anyone else run into mismatched specs on these older models?

3 comments

3 Comments

anthony_jackson318d ago

Remember that time we found a service manual glued shut with decades of old grease.

jesse_smith108d ago

Manuals get like that sometimes, yeah.

the_robin8d ago

Yeah those old prints are basically just suggestions at this point. Always gotta break out the mics first thing, saves so much headache.