111W155 Feeding Backwards

[Uwe]

Three things need to be in the right spot at the same time for proper feed timing:

1. Thread take-up lever at the very top

2. Arrows on the hook drive shaft aligned

3. Feed dog all the way to the front

It's possible your feed eccentric assembly (the part that changed the stitch length, "wobbles" around the drive shaft and moves the feed lever) has shifted/rotated on the hook drive shaft. It's supposed to sit in a very specific position on the hook drive shaft, usually by means of a set screw in a lengthwise slot carved into the hook drive shaft.

If point 1. and 2. are in the right spot, but the feed dog is not in the front, your feed eccentric itself may be out of alignment somehow. Dial in the maximum stitch length first to make it easier to tell the position of the feed eccentric and feed dog. 

Edited April 27, 2016 by Uwe

[leecopp]

Some Progress .. hang in there

The bottom shaft drive/timing gear was not seated into a shaft groove .. the set screws straddle the groove, one is marked with an S.

The feed dog eccentric appeared to be tight to the bottom shaft, but actually was not (set screws were firm, but not tight) allowing it to move on the shaft.

The feed dog lifting cam is seated correctly on the shaft.

So need to figure out which set screw locks the timing gear and eccentric into the proper orientation and try once again at getting the upper and lower drive shafts synced. Looks like the goal is to have the feed dogs forward and the lifting arm at the top.

There is anecdotal evidence the owners husband was a tinkerer who sadly had diminished capacity toward the end..

Cowboy  Bob, did you mean the Setscrew on the Drive gear is marked with an S engages into the slot? The feed dog cam only has 1 setscrew on my machine.

 

Hold on Breaking news ..

Reset the feed eccentric and the drive gear ,  aligned the arrows and put the belt back on and the feed is working correctly - Max stitch length is more than 1/4" ! The needle timing looks close but can't see very well till I take off the needle plate and it is time for bed.

Thanks for being there guys. more details to work out.

 

 

 

Lee

 

[leecopp]

All issues resolved, dreaded previous owner had tweaked around with about anything that would tweak,

Timed hook, adjusted presser feet (hardest part to understand), got all the pieces lined up with the proper grooves.

As others had mentioned, too much internal resistance to run on a normal industrial treadle. too bad,

I am guessing a servo motor is in my future since the clutch motor is a little flakey .. at least it has a modern three hole mount.

Sewed single index card and 4 layers of heavy poly webbing (barely fit under the feet).  Was using v92 dacron since I already had it on the right style bobbin. No problems.

 

Thanks to all for their help.

Happy Day

 

Lee in florida

 

[CowboyBob]

These are the worst ones to repair,where someone else has turned & adjusted things that didn't need adjusting.