1940 15-91 Full Restoration
#1
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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.
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.
#3
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Join Date: Aug 2012
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http://vssmb.blogspot.com/ Lots of information and repairs on vintage sewing machines.
Welcome to the board and that's a clever user name!
Welcome to the board and that's a clever user name!
#4
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 Cleaning and repairing the Shellac clear coat on Vintage sewing machine heads
Janey - Neat people never make the exciting discoveries I do.
Last edited by OurWorkbench; 03-13-2018 at 06:17 PM. Reason: try correct line space
#5
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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.
#6
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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
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
#7
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Join Date: Feb 2018
Posts: 29
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?
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?
#8
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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.
#9
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Join Date: Feb 2018
Posts: 29
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.
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