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JuneC
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« #15 : June 27, 2011, 10:41:01 AM »

Anyhoo, to get this thread back on track - sorry for the rant :-[ - I'd be interested in info on the drive mechanism for the feed dogs as well.  My new/old black singer - the one with the totally wrong hook - has an issue with the feed dogs and feet not being in complete agreement as to when and where to move.  They meet forward, travel back together, then on the return to forward, the feet grate forward over the dogs - probably 1/8" or so.  It's not so noticeable when there's fabric in the machine, but hand cranking the wheel shows there's a real issue.  This not working in unison thing makes a mess of vinyl and gives inconsistent stitch length.

June

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Gregg @ Keystone Sewing
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« #16 : June 27, 2011, 11:13:05 AM »

http://keysew.com/Webpages/DemoImages/Vibpressfoot.jpg

This place goes on a tangent in a New York minute anymore!

OK, see attached.  This is what I'm thinking could be an issue.  AGAIN, this is a possilbiity, not for certain the issue here.  If I'm not mistaken, most LU-562/3 models ahve a slot or flat for the screw to fall onto so this is a fixed adjustment.  I've seen some where the slot or flat is off, too, but this is not likely.  

To see if the screw on the eccentric cam falls onto a slot, take ONE screw out at a time, with the other tight.  You will see a slot or flat spot, if any under one of them.  If this is the case, one of the two screws are either on the incorrect spot, or there may not be any at all.  If this is the case, follow the detailed instructions that may help.  In addtion to what they are stating in the book here, I ALSO do my own test; One, make sure the material is not being pushed backwards even a fraction of a MM.  Nothing back or toward the operater while in reg. forward sewing.  A trick is to use a piece of cardboard for accuarte inspection.  Also, I will cycle the machine by hand, with no drive belt from the motor slowly and hit the reverse, to see that it's working smoothly.  If the feed timing is off, it will often catch or snag.

AGAIN, all of this is for an adjustment that many or may not even be the issue at hand, so use this mini guide as a reference only, but it is possible it may help from what I'm reading here.  No definitive answer for us here. 
« : June 27, 2011, 11:18:42 AM Gregg @ Keystone Sewing »
gene
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« #17 : July 01, 2011, 05:54:37 PM »

I checked the two screws and they are as they should be if I am understanding correctly. I took one of the screws out and there was a slit under it. The needles and the vibrating foot do what your paper shows they should do.

As I was turning the wheel by hand, very slowly, I saw that the vibrating foot, when returning toward the operator, is pushing the thread toward the operator, as the needle is rising, and this is what is causing the fabric to be pulled back toward the operator. Is this a function of too tight thread tension??? or something else going on?

Thank you,

gene

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Darren Henry
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« #18 : July 02, 2011, 01:41:07 PM »

I have found that too much thread tension (even balanced top/bottom) will cause this as will too much pressure on the presser foot.

Just my 2.03 . :)

Life is a short one way trip, don't blow it!Live hard,die young and leave no ill regrets!
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