AP-100 motor bearing , how to replace?

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I followed Madman's suggestion to make my own bearing puller (see picture). I screwed the nut on the shaft, put a piece of hardwood on it and gave it a few wacks with a hammer. It went out pretty easily. Thanks for the tip!

I wonder if i could use the same set up, turning the rotor upside down, and tap at the other end of the shaft to install the new bearing.

quebecois-2019022212073209520_1.jpg
 
That was my bit of southern engineering... :o)
See the picture below on how I put the new one on. I used a 5/16 or 3/8 socket over the bearing inner race and tapped on with mallet. Make sure motor shaft is on wood to prevent mushrooming it.

texaskirbyguy-2019022220004109077_1.jpg
 
Hey, I like the homemade bearing puller! It's literally exactly what I had pictured in my head when I described it. I suppose you could use it 'upside down' to install the bearing, but I'd definitely do like texaskirbyguy says, use a deep socket or a pipe. A 6 inch 3/8" pipe nipple should be easily had at any hardware store for a couple bucks. Would probably be about the right diameter.
 
A few years ago, I found a 10 mm deep socket on the pavement, walking down the main street in Granby, first city at west of Waterloo. Back home, I put in in a drawer with other sockets, saying to myself that it could be useful some day.

Well that day has come, it was perfect to put the bearing back on the shaft !

Bearing of second motor is a lot more stubborn, I have put penetrating oil 2-3 times since yesterday but it doesn't seem to do any good , I'm still unable to remove it.
 
So that's where my 10mm socket went... (mechanic's joke)

Push comes to shove, you could just find someone, or some business with a hydraulic press and ask them to press it out for you.
 
Well , the second one finally came out, I had to install my bearing extractor on something more stable and solid, i.e. on pieces of 4X4 laying directly on the concrete floor. I got it out at fourth strike.

I had a hard time installing the new bearing in the fan housing, for some reason it didn't want to slide straight in the housing, it was always going in at an angle.
 

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