Broken Rotary Hook

Paulheally

On one of my heads, I had a bobbin run out--while putting a new bobbin I was interrupted by a walk in client. I restarted the machine not realizing I had forgotten to return the bobbin. This cause a very massive birds nest in the bed. In order to clear the birdnest, I had to loosen the Rotary Hook Retainer Base that is located at the top front of the Bed and just above the front of the Rotary Hook. This allowed me to clear the birdsnest. During this process I also removed a screw to the knife--it dropped to the floor and was not replaced--I am thinking this is not germane to my problem, but I mention it just in case. After doing this and fixing my 190 Cut Blade error, the machine returned to normal operation. It was on needle 3--which was the third of a three-needle job. The rest of the run progressed with no problem. When I went to my next run (the run is a Soccer Ball w/ verbiage top and bottom) the machine started the underlay of the soccer ball on Needle Two (first needle in the design) and then progressed to the fill. When it got to the fill, the first approx 500 stitches were fine and then I experienced a needle break. I replaced the needle and started the machine again, which then had a thread break. At that point I checked the bobbin and noticed the bobbin was in a very awkward position--almost 180 degrees rotated from normal position. When I took the bobbin casing out of the Rotary Hook, I determined the inner cylinder of the Rotary Hook was moving and rotating. I reviewed the Rotary Hook in the next head and determined it should not do that--it should be stationary not rotating. I do have a replacement Rotary Hook and upon inspection of that piece, noticed that the inner cylinder does rotate--but it should not be moving during operation (or at least when the machine is stopped--it remians stationary) so as to change the bobbin casing position. I am trying to determine if the Rotary Hook is broken or can be fixed. Either way, I am also trying to deterrmine the degree of difficulty in removing the Rotary Hook for either repair or replacement. The Machine is a Happy. Please email me off board if you think you can assist:

Thank you much

Paul
209.832.3514

AJST

Hello Paul,

From your description, this sounds like the Rotary Hook retaining finger may be out of adjustment. If you look at the center part of the rotary hook there is a cut out where the retaining finger fits to lock the center of the rotary hook in place. What model is your machine?

Contact me if you need instructions on adjusting the retaining finger.

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