On an Otis 22 CT geared machine- circa mid 1970's- (basement traction) Doing a Worm gear removal. After landing the counterweight, and hanging the car-
Ring gear has already been removed, now replacing the worm gear.

1. Remove flange mount motor.
2. Remove thrust bearing cover.
3. Remove three allens holding thrust-to-worm retainer plate, set aside.
4. Remove bolts holding brake-side worm bearing retainer plate, (where the shaft seal is).
5. Remove brake spring, loosen brake shoes off, clear of brake drum. Worm now spins freely.
6. Tug on brake drum, pulling worm out of machine from the brake side. There is a spanner nut, that holds the brake sheave onto the worm. It is recessed, where a spanner wrench won't fit onto it. We could coax it around with a single jack and a punch, but there seems to be no reason to do so, since it looks like the brake drum can come out with the worm together as a unit.

Did all this, but worm gear will not come out of the gear case.

Brake side worm bearing looks like it just presses in, perhaps more force is needed to pull this bearing out with the worm?

Thrust bearing inner race will spin on end of worm, suggesting the thrust bearing is not seized to the worm shaft. Perhaps the worm gear comes out from the thrust bearing end of the machine? Any ideas? Have I missed a something?

Also- Are the sheave shaft bearing caps eccentric? Seems to be no obvious way to adjust the backlash.