New Constant Thread Shred & Breaks

[sschroed2]

A week ago I sewed out 28 shirtbacks at 46k per shirt, plus names on fronts with zero problems.

Upon finishing, shutdown the machine and had not sewn anything since. At the end of the run I got the message that the 2mil sititch maintenance was due. So today, I took all the yellow and red rollers out, cleaned and greased everything. Put it all back together and have not been able to sew anything yet.

I generally use auto acti-feed and it works great. But I watch it now and it's setting itself to between 1 and 4, mostly 1 and I'm sewing on pique knit. So I changed it to standard and set it to 5. Iwill now sew approx 1500 stitches before it shreds thread or POPs and breaks. It also broke a needle.

I took the Rotary hook cover off and check for lint etc, not bad, but cleaned it anyway, put every thing back together. Had already oiled the rotary hook 1st thing today. Still no luck.

I have not had this problem since I first got the machine. It took forever then to get it to sew smooth and needless to say, I can't remember what I did to change it. As I recall, it just seemed to start running better.

And yes, I have checked all the needle positions.

Sorry this is so long, just trying to provide as much info as possible. I also reverted to a design that has sewn extremely well on pique knit in the past and it won't sew either.

Suggestions please! Could this happen if I got too much emb polymer on the yellow rollers? What could be causing it?

Sue Schroeder
Fontana, CA

[Judy]

Two questions: Have you changed the bobbin, and how is your humidity -- lower than two weeks ago? I find static and a bad bobbin to be my two biggest pains in the keister.

[Russell Silva]

Are the thread frays happening on all needles?

Make sure you didn't get any grease on the yellow part of the rollers or the on the outer part of the red pinch roller, if you did get grease on there the thread can slip through and cause problems.

Also check needle orientation, straight or slightly right, not to far right and never left and make sure they don't have burs on the points, if you are not sure, replace them.

[sschroed2]

Thank you everyone for you prompt responses. Idecided to take a break, went to dinner, watched a movie and then checked my email.

All I can say is 1) It awful getting old and forgetful and 2)I guess I can never take a week off again.

Special thanks to Brad at Avalon. Your suggestions were not the answer but turned a light back on in my brain which made me realize what was wrong,.

I had forgotten that the last thing I did was experiment with some puffy foam, not the dickies shirts. My entire problem was I forgot to check the pressure foot height. It was still set for the puffy foam. So needless to say it was way to high. I feel like such an idiot.

Thanks again to everyone. Don't know what I'd do without this forum to turn to.
Sue Schroeder