Motor bearing replacement tutorial?

[Cavediver]

Hello all,
My new-to-me '56 Greenie needs some motor work. I've pulled the motor (GE) and removed the sheaves. When I apply power to the motor, I get a grinding / screeching that I can only assume comes from the bearings.

I've ordered new bearings and have no idea how to install them I've searched the board for some sort of tutorial, but am coming up a little short. If anyone knows of a tutorial, could you post or send a link?

Thanks,
Jay

ETA: The inside of the motor is absolutely caked with dust. Aside from disassembly tools and some compressed air, will I need anything else to get it cleaned out?

[dusty]

Hello all,
My new-to-me '56 Greenie needs some motor work. I've pulled the motor (GE) and removed the sheaves. When I apply power to the motor, I get a grinding / screeching that I can only assume comes from the bearings.

I've ordered new bearings and have no idea how to install them I've searched the board for some sort of tutorial, but am coming up a little short. If anyone knows of a tutorial, could you post or send a link?

Thanks,
Jay

ETA: The inside of the motor is absolutely caked with dust. Aside from disassembly tools and some compressed air, will I need anything else to get it cleaned out?

I have not done this but I think you will be fine. No special tools unless you end up needing a bearing puller and or press.

In fact, the job would probably be best done with those tools handy.

There are a couple threads that discuss your task at hand but there is no "tutorial" that I recall. Good luck. Maybe you could do the much needed tutorial for us.

[Cavediver]

There are a couple threads that discuss your task at hand but there is no "tutorial" that I recall. Good luck. Maybe you could do the much needed tutorial for us.

I'm pretty sure I'm your guy if you need some lessons in cursing and self injury during the repair process. If not, you might be better off looking for someone else to help

Kidding aside, I'll take some photos and make notes along the way. If I can do this without too many problems I'll give the tutorial a shot.

I've got a couple of 2-jaw pullers available, but no bearing specific or 3-jaw pullers. If it's advisable to do so, I'll pick them up from HF or a local Autozone. This won't be the first time I've used their specialty tool rental service. (If you don't know what I mean, Autozone and many of the other parts stores will rent specialty tools. Put down a deposit equal to the price of purchase]full[/U] refund.)

[jere]

If your motor is anything like my mark v it shouldn't be too bad. I took some of mine apart last night to oil the bearings and clean out some of the dust.

To take things apart, if you have a set of allen keys, a set of small sockets (you only need one size), screwdriver and a rubber mallet, you should be fine. Oh and on reassembly I ended up using a magnet on a telescoping stick (the ones that cost around a dollar), to hold a metal plate, while I threaded a screw, that was a little tricky.

To clean the dust I used some keyboard duster (a compressor w/blowgun would work too) a shop vac, and a piece of power cord with the copper wire as a brush (a multi strand cord like from a lamp or something).

The only thing I would do differently is mark with a sharpie the housing's alignment with the cast ends/legs before taking it all apart. The first time I put the ends back on they were a little off and sat in the SS motor housing pan cockeyed. A line on each side would be enough.

The bearings are just pressed on, it wouldn't be hard to get them off with a gear puller as mentioned but getting them back on might be a little tricky. I would bore a hole in a 4x4 the diameter of the shaft and the depth of where the bearing sits. Put the bearing on what you can by hand and use the 4x4 and a mallet to get it on the rest of the way.

[JPG]

The 'details' are different, but the basic procedure is the same.

There are different Mark 5/V motors as well.

https://forum.shopsmith.com/viewtopic.php?t=11986

And disassembling the same
https://forum.shopsmith.com/viewtopic.php?p=135172#post135172

You can get by without a bearing press(much much easier with one), by using pipe(tubes) with square ends that will apply force to the inner race ONLY as they are gently TAPPED on.

Also be aware the Emerson motors may have different sized bearings. The 'back' end may have a 5/8" id.

[Cavediver]

The only thing I would do differently is mark with a sharpie the housing's alignment with the cast ends/legs before taking it all apart. The first time I put the ends back on they were a little off and sat in the SS motor housing pan cockeyed. A line on each side would be enough.

Thank you for the heads up. It's always the little things that I miss that cause me the most grief.

Just to clarify, are you talking about the motor housing and the motor endbells, or am I misinterpreting?

[JPG]

Thank you for the heads up. It's always the little things that I miss that cause me the most grief.

Just to clarify, are you talking about the motor housing and the motor endbells, or am I misinterpreting?

He is!;) .....

See post #2 in disassembly link above.

And last pix in post #2 of reassembly link above.

[Cavediver]

[quote="JPG40504"]He is!]
Thanks!
And thanks for that motor thread! I like the way you set up that puller!

[JPG]

Thanks!
And thanks for that motor thread! I like the way you set up that puller!

I added a couple of references to that 'He is' post!;)

[Cavediver]

I think the Previous owner must have had a crack at rehabbing this machine, got frustrated, and stopped mid-disassembly. The unit has a new 3-wire cord, but the ground wire was floating in space. One of the four motor mounting screw heads was seriously damaged/ rounded out. I guess that's where he stopped

So far all is well. After dealing with said mounting screw, I pulled the motor from the pan, made a bunch of notes, took pictures, and made some alignment marks on the endbells

The motor is now disassembled and ready for bearing removal. I'm going to stop by HF today and take a look at that bearing puller kit. If I take it home with me I should be able to get this step finished tonight and ready for bearing re-install as soon as they arrive.

I need to order new belts today. I'm also pondering replacement of the control sheave(?) bearing. I've read that one is often the first to go, but mine seems to be in decent shape. Decisions, decisions, decisions.

That's it for now. I really just wanted to post back and say thanks again for the advice.

Jay

ETA: Should I start a new / different thread for rebuild questions, or do you guys prefer a new thread for each new topic? I know it's easier for people to search and find answers if there are ore individual topics, but it also helps folks understand and keep track of progress and problems when it's all in one long rebuild thread. Thoughts?