wlg190861 Report post Posted September 10, 2014 (edited) I bought a CB4500 last year an now there is a tapping noise when the needle reaches the top of its stroke. I'm not sure if its in the bobbin or what but, when I put oil in the bobbin housing the tapping stops for about 100 stitches then it starts again. Also when I take the bobbin out it runs great. Put the bobbin in an it starts tapping again. Any one have an ideal what it could be. Dan Edited September 10, 2014 by wlg190861 Quote Share this post Link to post Share on other sites
Northmount Report post Posted September 11, 2014 Have you tried changing the needle? Tom Quote Share this post Link to post Share on other sites
wlg190861 Report post Posted September 11, 2014 Yes I put in a new needle an still the same Quote Share this post Link to post Share on other sites
CowboyBob Report post Posted September 11, 2014 Dan,This is a strange one!! You might want to take the race(the part that holds the shuttle in) and clean it out,you might find some thread or broken ends of needles in there.When you put it back together turn the 2-screws all the way in & back out a good 1/2 turn..Also have you ever taken the side cover off & oiled everything on the needlebar end?That might help too. Quote Share this post Link to post Share on other sites
wlg190861 Report post Posted September 11, 2014 I'll try that Bob Quote Share this post Link to post Share on other sites
wlg190861 Report post Posted September 12, 2014 Well I've done both Bob an it is still the same but I have narrowed it down to the bobbin. I was sewing an it was still making that loud tapping noise an when the bobbin thread ran out it ran fine, nice and quiet. Is it possible the bobbin tension is to tight or is the bobbin shot ? Quote Share this post Link to post Share on other sites
Troy Burch Report post Posted September 12, 2014 Have you checked to see if the bobbin spring is broken. Quote Share this post Link to post Share on other sites
CowboyBob Report post Posted September 12, 2014 Troy might be right!There's a spring down inside the bobbincase that pushes the bobbin out & once in a while it can fall out & could cause this noise. Quote Share this post Link to post Share on other sites
Cobra Steve Report post Posted September 12, 2014 (edited) Sometimes there may be a burr on the point of the shuttle hook. When the thread passes over the burr, it could get caught just for a breif moment causing the thread to pop off of the hook. This could be the sound you are hearing. Take the shuttle hook out of the machine and inspect the point by running your thumb, or finger nail over the point. If you feel a burr or see a burr, use a fiber wheel or a buffing wheel to remove the burr. You can also run the machine with no thread to see if it makes that noise, if not, it is probably the burr, or just the normal noise that the machine makes when the thread releases off of the hook. Steve Edited September 12, 2014 by Cobra Steve Quote Share this post Link to post Share on other sites
wlg190861 Report post Posted September 12, 2014 Yes there is a spring off in the bobbin housing. Now I just need to figure how to fix it. My eyes are not what they used to be. I don't want to wreck anything. Should I take it to a sewing machine place. Quote Share this post Link to post Share on other sites
wlg190861 Report post Posted September 12, 2014 I'm sorry for all the questions but this is my first machine. I hope when I get this fixed It solves the problem. Quote Share this post Link to post Share on other sites
