[amayausers] Re: Upgraded Feed Rollers, Lots of thread breaks

  • From: "Russell Silva" <russell@xxxxxxxxxxxxxxxx>
  • To: <amayausers@xxxxxxxxxxxxx>
  • Date: Wed, 4 Jan 2006 14:11:05 -0500

Hi Ed,

    I did grease both the red and yellow rollers when I installed them. When 
the machine is running I have been watching the tread come out of the rollers 
and it does stay centered, when I do get a thread break it seems to only break 
half of the thread and sews for a few more stitches (30 to 50) then completely 
breaks, I only here the pop when the first part of the thread breaks, the other 
thing that happens after the thread breaks and I go to fix it is the thread 
seems to be hanging up on the thread spool. I have checked the thread path and 
everything is fine it just comes off the spool with tension at times, some days 
worse then others. I put a humidifier in the room with my machines hoping a 
constant humidity level will help. 

Russell
  ----- Original Message ----- 
  From: Ed Orantes 
  To: amayausers@xxxxxxxxxxxxx 
  Sent: Wednesday, January 04, 2006 1:46 PM
  Subject: [amayausers] Re: Upgraded Feed Rollers, Lots of thread breaks


  Russell,
      It has been my experience where when someone upgrades to the new rollers, 
they tend to do the change over -forgetting the importance of one step.  The 
lubrication step.  Or maybe they only do half of this step.  Meaning.....

  Most folks are, in fact, putting a spot of polymer grease on the hubs of the 
new yellow rollers but they are forgetting to put a spot of polymer grease on 
the black shaft where the new red rollers are installed.  You have to 
understand that this is plastic on plastic with a good bit of tension between 
the two on the underside of the shaft.  There is what's called a "load" (or 
pressure) placed on this roller and shaft stemming from the pressure between 
the red and yellow rollers.  If one installs these red rollers dry, then what 
happens next is the red roller isn't allowed to spin smoothly and, in effect, 
hangs up as it's trying to spin.  When it hangs up or stops sporadically, 
usually for a micro second, 
(spin-spin-stop-spin-stop-spin-spin-spin-stop-spin-etc... if you get my drift) 
the thread is then forced out to the side of the two rollers.  Usually this is 
to the left side (has to do with angles and pressures).

  Now that the thread is not pinched as it should, between the two rollers, and 
is free to come and go, the next stitch happens sort of like this.  The needle 
pushes the thread down thru the needle plate where is hands it off to the 
rotary hook.  The RH takes is around the park one time where now the take up 
lever takes control and brings up the excess thread back up and out from under 
the needle plate area.  This can only happen if the thread feed rollers are 
doing their job in holding the thread in one place.  It's kind of like trying 
to catch a fish without reeling in the line.  It will never happen and you'll 
eventually lose the fish when you run out of line on the reel.  But in our 
case, the excess thread now gets tangled in and around the rotary hook and 
resulting in what looks like a birds nest under the needle plate and then a 
loud pop or snapping sound is next as the thread eventually breaks violently.

  When ever you get a thread break, you should inspect the thread path which 
includes checking under the thread feed rollers. You might just find that the 
thread is, in fact, not centered between the two rollers.

  In summary, put a little dab of polymer grease on the red roller shaft making 
sure not to put so much where excess spills over both out and on the rolling 
surface of the roller(s).  Also clean off the shaft first with a tissue being 
sure to remove any old nasty residue that is still on the shaft.  Doesn't 
matter what anybody says, residue ain't as slippery as new fresh grease.

  Keep in mind that at the factory, someone did this originally and the old red 
rollers you removed probably has some residual grease still on them.  But the 
new rollers you're installing are bone dry.

  Sure hope this solves your problem.

  Ed Orantes
  Amaya, EMT & EMC Technician
  New Orleans, LA
  504-258-6260
  emservice@xxxxxxx




   -----Original Message-----
  From: amayausers-bounce@xxxxxxxxxxxxx 
[mailto:amayausers-bounce@xxxxxxxxxxxxx]On Behalf Of Russell Silva
  Sent: Monday, January 02, 2006 5:48 PM
  To: Amayausers
  Subject: [amayausers] Upgraded Feed Rollers, Lots of thread breaks


    Hi All,

        I just upgraded to the new yellow thread feed rollers and now I am 
getting allot of thread breaks, the directions said to go up on the MT but when 
I do the thread dances around too much in front of the name plate, the design I 
was design I was working on is normally set at 4, I have tried going all the 
way down to 2 and had the same problem. When the thread breaks there is usually 
a popping sound, I checked the hook timing but that seems to be ok, also new 
needles. Does anyone have any ideas of what might be going on?

    Thanks in advance
    Russell Silva
    R. S. Embroidery
    508-222-4433

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