Singer 27 Arm Shaft Removal

[friquant]

How to remove the arm shaft from a Singer 27 ?

Normally, I repair machines leaving them mostly assembled. To step outside of my comfort zone I decided to take one apart. I'm already dreaming of how clean I'll be able to get all the pieces ✨

But it's not clear to me how this arm shaft comes off. In the picture on the left, those two holes go all the way to the shaft. (Oil holes, I presume)

  

 

 

There are few things inside that have to come loose also, but I'd like to get the arm shaft on its way out first:

 

I think the arm shaft comes out the front of the machine. I removed the set screw just to the left of center in this photo:

 

Inside the nose, with needle bar and presser bar removed:

   

 

A couple interesting things about this machine, is it has a cam for the takeup lever, and a shuttle for the bobbin:

     

 

[CdK]

@friquant In the first picture there appears to be screw slots inside the holes, maybe screws in there?

[friquant]

1 hour ago, CdK said:

In the first picture there appears to be screw slots inside the holes, maybe screws in there?

It does look that way in the photo, but I've checked and those holes go all the way to the shaft. (A bit of lint in the bottom of the holes casting shadows).

Are there parts manuals for these old machines? All I've seen is the user manual: https://ismacs.net/singer_sewing_machine_company/manuals/singer-model-27-number-2-vibrating-shuttle-sewing-machine-manual.pdf

which does have somewhat of a drawing

[AlZilla]

I would have expected something like this, or a tapered pin in the same place.

 

[AlZilla]

Plate 467, part# 15152

 

singer 27-1, 2, 3. 4 parts.pdf

[CdK]

3 hours ago, AlZilla said:

I would have expected something like this, or a tapered pin in the same place.

 

Looking a photo 1 again I see what appears to be a pin on the left, notice the circular dissimilar coloration on the shaft.

[Constabulary]

if it is not necessary to remove the shaft better leave it where it is. such actions sometime cause more damage on parts that most likely are no longer available.

My 2 cents.