I approached this part of the disassembly with some trepidation, but I’ve run out of all the easy stuff to do. Before starting I read, and re-read, the Adjuster’s Manual hoping it would be of some help only to find out it was going to be more difficult than anticipated since Ms. Rusty’s gears don’t rotate, making it difficult to access the set screws in most places.
Here is a view of the underside of the Ms. Rusty:
I removed the Rotating Hook Shaft Bevel Gear Cover on the by taking out 2 gear cover screws. This cover is on the front end of the machine, on the left hand end of the drive shaft.
Then I removed the back cover (attached with 2 screws) exposing the back bevel gear.
I then loosened 2 set screws at each of the following points -
Front bevel gear -
Drive shaft collar -
and back gear hub -
At this point the drive shaft was ‘supposed’ to loose enough to be withdrawn. Not so in my case So I proceeded to removed all the set screws and applied some lubricant to work into the joints and loosen things up. While that was working, I moved on to work on the removal of the front gear hoping to make some progress there.
I took off the bevel gear front cover – here is a picture with one of the 2 screws removed:
Fortunately the front bevel gear was loosened up from the drive gear and I could rotate that enough to access both the set screws on the rotary hook bevel gear. After those two set screws were removed I was able to pull off the rotary hook bevel gear.
This exposed the rotating hook shaft that I then removed from the top of the machine
Well, after lots and lots of lubrication, brake release, elbow grease, removal of the bushing set screws, and help from my husband, I was FINALLY able to break the rotating hook drive shaft free! I first want to point out a few important ‘landmarks’ before pulling out the drive shaft.
Here is the underside with all the set screws removed
Rear bushing flat area for set screw -
Divot at right end of rear bushing -
Set screw recess of front taper bushing -
Here are all the parts after removal from the sewing machine: front bevel gear, front taper bushing, left drive shaft collar, right drive shaft collar, rear bushing, and the drive shaft with rear bevel gear still attached at the top. Theoretically the rear bevel gear should come off the drive shaft, but even after overnight soaking in kerosene, it still will not come off. At this point, I’ve stopped trying and have decided to leave it on.
I can’t really tell the difference between the left and right drive shaft collars, but here are pictures of the left and right hand sides of the them for future reference, just in case there is some difference that I can’t pick up at this time.
Here is a picture of the bottom of the machine after the rotary hook drive shaft and respective gears are removed.
I think the next step will be to remove the feed dog shafts. At that point I should be done with the bottom of the machine and will have to tackle Ms. Rusty’s innards. Oh boy!