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Ziggy

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Reply with quote  #1 
If anyone has insight on a malfunctioning feed regulator, we'd appreciate some feed-back (see what I did there?  never mind...).  This is a 127 that was pretty well frozen up.  Got everything (I thought) loosened and operating marginally well, but we can't adjust the stitch length using the thumb screw, except to lengthen.  Backing the thumbscrew out leaves the regulator in place, rather than it moving back against the end of the thumb screw (photo below).  One can reach inside and push it back against the thumb screw, and it will move even when the feed regulator is tightened all the way down.  Loosening the pivot screw that holds the regulator (top screw that you can almose see on photo below), as you can guess, simply allows it to flop around randomly.  You can see the gap between the thumbscrew and the bottom of the regulator.

regulator.jpg 

The only possible culprit to reveal itself involves the roller bearing on the fork.  It does not spin the way one would think a roller bearing should.  Could the fact that the roller bearing is not spinning mean that it hangs the regulator up enough that it doesn't roll back against the thumb screw?  Is it supposed to spin?  Is the regulator not getting seated properly?  There don't appear to be many options for seating--pretty simple setup.

Here's the fork, showing the roller bearing and regulator.  

regulator2.jpg  regulator3.jpg 

To my untrained eye, there doesn't appear to be anything physically amiss.  Some wear and pitting, but this setup doesn't look a whole lot different (condition-wise) than a 27 we took apart a while back.  The 27 just purrs.

What are we missing?

Thanks in advance!


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Jim/Steelsewing

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Reply with quote  #2 
Ziggy, Sorry. Wish I could help. My sister has a malfunctioning feed regulator... but all her sewing machines are fine.

I'll go take a look at a 127.

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Pabry

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Reply with quote  #3 
Ziggy,
The feed regulator (That black piece in your 3rd picture) has a nub/stud on it. That nub needs to sit in the groove of the thumb screw. In your first picture, you can clearly see the grove of the thumb screw (that’s the screw you can turn from the front of the machine to adjust the stitch length). I’m attaching a picture from the 127 service manual.

Weekend previous, I switched the thumb screw between my 66 and 127.

Here’s the general instructions of how I did it. Assuming you have both the feed regulator (M2) and thumb screw (O) out of the machine.

1. From front of machine, screw in the stitch thumb screw. Not all the way. Leave 3 screw thread visible from the front.
2. Lay the front of the machine down on the table so you can easily access the back of the machine.
3. Here’s comes the hard part. You’ll need to get that nub/stud on the feed regulator (M2) into the groove of the thumb screw.
4. Once that’s in, wriggle the feed regulator onto the feed fork roller. You may need to turn the hand wheel bar and fidget to get it onto the roller.
5. Lastly, secure your feed regulator in place (top screw on your first pic that’s half visible).

I’m away from my machine. I’ll get a picture of the final assembly tonight, if you still need it.

Attached Images
png FC1914A9-186E-4C41-AA64-A5FD795C8680.png (299.62 KB, 8 views)

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Ziggy

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Reply with quote  #4 
Quote:
Originally Posted by Pabry
 That nub needs to sit in the groove of the thumb screw. 


HA!  I'll bet that's it.  The thing was so dirty and rusty and gooey when I opened it up, I couldn't see how it was put together.  And maybe I'm just dense (well, OK, I am dense), but I can't really see in the adjuster's manual just how that's put together.  I'm sure it has nothing to do with the grainy scan...

I'll give it a shot.  Bet it works.

Thanks!!!

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Kitcarlson

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Reply with quote  #5 
I think loosen screw below hand wheel, just enough to tilt part and engage as Pabry suggests. May also need to turn stitch thumb screw, to get it closer. When set, tighten screw.
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Pabry

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Reply with quote  #6 
Dave,
I tried partially unscrewing the screw behind hand wheel. With the feed regulator on the roller first, I couldn’t find a way to get the nub to go back into the thumb screw groove no matter the combinations of turning the thumb screw and the hand wheel bar. (It might be possible but I couldn’t do it that way). It dawned on me to get the nub in the groove first, then set it into the roller. That sequence worked for me.


Ziggy,
I’m pretty dense too. 😆 I must have read the instructions at least 10 times and then lots of trial and error to figure it out. Let me know if that works for you.
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Ziggy

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Reply with quote  #7 
Pabry & Dave:

Nailed it.

Ended up just taking the fork out because I, too, couldn't get that dude to squeeze past the end of the thumb screw.  That, and the hands don't function the way they need to!  But with the thumb screw almost all the way in, the regulator slipped right in and I was able to get it threaded.  Slid the fork back in, tightened everything up, and bingo!

The poor old thing has some other adjustments needed, but this makes a heck of a difference.  Makes the cutest, tiniest little stitches!  But only if I want it to!

Thanks again, deeply appreciate it!

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Kitcarlson

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Reply with quote  #8 
Yeah!
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Pabry

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Reply with quote  #9 
Woohoo!
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