Diagnosing an issue w/ Singer 29-4

[Teradee]

Yes, I oiled those points and there is a little play back-and-forth with the shaft.  It definitely feels a little sloppy. Is there a way to tighten up the shaft or the function of that mechanism?
 

By the way, thanks again for all the help and advice everyone! This forum is incredibly helpful to people like myself who are just getting started in this work!

[Constabulary]

3 hours ago, Teradee said:

Is there a way to tighten up the shaft or the function of that mechanism?

You mean the top shaft?  Then no cause you have a pinned cam on either side of the shaft. If it causes mechanical issues (but I do not think so) I would add a very thin washer but removing one of the cams (in worst case) can cause more issues cause the pins are tapered and sometimes they are super tight.

Edited January 5, 2023 by Constabulary

[CowboyBob]

On 12/31/2022 at 6:00 PM, Teradee said:

Thanks @Wizcrafts and @Constabulary!  

I will try your suggestions right away!  
 

(by the way, I wasn’t sure I could use a heavier oil in these machines…I was always warned to only us sewing machine oil.  That said, when I opened the window in the rear and look at the cam and where it connects to the shaft that rotates the shuttle, it’s coated in a very thick grease of some kind.  And when I tighten the large screw below that window, it just spins and spins.  That might be a culprit as well I’m guessing. )

That screw should tighten up,if not someone must of ran it loose yrs ago & it ruined the threads.Also NEVER use grease esp on a roller,it will build up in front of the roller & cause it to stop turning when the grease dries up,it won't lube the inside of the bearing of the roller either.Sewing machine oil is best,motor oil attracts lint.

[CowboyBob]

4 hours ago, Constabulary said:

You mean the top shaft?  Then no cause you have a pinned cam on either side of the shaft. If it causes mechanical issues (but I do not think so) I would add a very thin washer but removing one of the cams (in worst case) can cause more issues cause the pins are tapered and sometimes they are super tight.

I think he's talking about the shuttle carrier shaft & the gears.There's a busing in the carriwer shat but it's no longer available.I've seen machines so wornout that they bind because the backside of the rack eats into the casting & makes the gears real loose.There's nothing you can do except braze the backside of the rack gears to get them closer & then grind off for a tight fit.

[Teradee]

I think I will post a short video and show you the parts im referring to, and how it all performs.  There's not much to these, but for some reason I'm not seeing where its binding.  

More to come!