1940 15-91 Full Restoration
 

This was left in my house when I bought it. It has been sitting for some years, but it is not in terrible shape. I started the process of doing a full restoration on the unit so I can put it to use. I really wanted to do a complete disassembly of the unit, but I cannot seem to remove the pin from the arm shaft. I have tried punches and an arbor press and it doesn't want to budge. I would like to glass bead the entire assembly and repaint it with a good etching primer and some glossy enamel and then do a full service / reassembly.


Are the pins tapered and how do I get them out? I suppose they do not have to be removed, but I would prefer to clean and oil them while not risk getting any glass beads in the sleeve bearings.

fun project, and welcome to the board, where ya been all this time?
some of our experts will be along in a bit!

http://vssmb.blogspot.com/ Lots of information and repairs on vintage sewing machines.
Welcome to the board and that's a clever user name!

I haven't had my 15-91s that far apart, but it appears that your machine may be a 15-90. I have a 15 that came with a 15-88 manual, however it had a motor and small hand wheel.

I'm thinking that the machine could have been put to use without a complete disassembly. Some would be needed to get he metal bits cleaned and polished. Most machines just need maybe a little kerosene cleaning and fresh oil to be put back in working order.

The decals look pretty good to me. I would polish with TR-3 unless the shellac is compromised, which it doesn't appear to be. Many have benefited by following https://www.quiltingboard.com/vintag...s-t193635.html

Janey - Neat people never make the exciting discoveries I do.

I have read that entire blog and unfortunately nothing about removing the arm shaft. I believe that the one I have is a 15-91 because it has a potted motor with a worm drive, no belts. It is hard to see in the picture, but the bed has a big chip in it and the finish is so fragile that it just flakes off. Since I have already removed every other part for a deep cleaning, I don't want to only do a 95% job. A new paint job will last a lifetime. When I am done polishing all the tiny screws and parts, I will post a picture.

UPDATE:

My GoogleFU must be strong tonight, I stumbled on the service manual for the 15-91. I am trying to upload a PDF but the server will not accept it.

For now I have it shared on my Google Drive
https://drive.google.com/open?id=1XX...xuQRZ61mz4aFSs

Are you talking about the pin holding the handwheel bushing onto the shaft? On my 66 and 99, those were slotted screws.

That area gets a fair bit of oil, so it might be varnished in place. some gentle heat or a long soak in kerosene/penetrating oil might be all it needs.

I have not encountered any tapered pins on these machines, but you have tried punching both sides?

With some help, I was able to drive out the pins, both were tapered in the arm shaft and bobbin shaft. I only have the front bushing to drive out and the machine will be fully disassembled, short of separating the castings which I am not going to do. It is getting fun now.

When I removed the arm shaft on my 66, I just removed the handwheel bushing and front bushing setscrews, and tapped the end of the arm shaft, which pushed the front bushing out. I haven't been able to remove the front crank, and I am a little hesitant to anyway since I'm not sure if the crank is statically set or adjustable.

It would be interesting to see the whole process if you are of a mind. I have a FW that needs the whole process, so following someone going through the process in photos would be interesting.

bkay