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Old 10-04-2013, 05:10 PM
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Singer stopped singing

Hello, while running some practice on my 111w103 I suddenly had no bobbin thread in the stitch. The shuttle had stopped turning. After checking some simple things up top with no improvement I checked under the hood (former car mechanic). I followed the drive shafts down from the toothed belt to discover that the lower Hook Driving Pinion Shaft (horizontal) was not properly engaging to turn the shuttle. The cam and spring at the right end of the lower timing pulley seemed weak, so as it turned around and reaches the 'flat' on the cam the Throw-In Arm does'nt land and stay on the flat but goes over it, thereby not turning the long horizontal shaft which leads up to the shuttle, wow thats a mouthful!. Upon further inspection I saw slop and wear in the 2 pinion gears that transfer through up to the shuttle. I hope this makes sense to someone , right know I'm considering replacement of the 2 gears: 223867 Hook Driving Gear and its buddy 267366 pinion Gear anlong with a bronze bushing on the verticle shaft thats below 267366. I will post pics. Thanks Vinny

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Old 10-04-2013, 05:51 PM
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Are you sure the safety clutch didn't trip? If it did, the hook will not turn. There is a button on the bed of the machine to hold down while turning the hand wheel to re-engage the clutch.
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Old 10-04-2013, 05:59 PM
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OK, after reading into this it looks like I tripped the Safety Clutch on the lower timing pulley. trying to re-set it now but the tab on the arm is not dropping back into the slot on the cam. stay tuned

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Old 10-04-2013, 06:05 PM
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Sorry Dan I missed your reply while getting a picture up. Yes the ckutch was tripped. I have the button on the bed pressed down while turning the pulley, still not dropping back in. Is there a sequence to it? turn pully forwards or backwards? The button does not seem to make a difference when pushed.
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Old 10-04-2013, 06:55 PM
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I put a drop of sewing machine oil on the post that the lever arm rides on and let it sit. I just came back to it and it clicked back into place. Thanks Dan! I'm sewing again. Vinny
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Old 10-05-2013, 07:14 AM
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The button is held down while you turn the hand wheel backward. I'm glad you got the clutch re-set.
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Old 10-05-2013, 08:49 PM
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What would be the reason for the Safety Clutch to continue to trip? From last night to tonight, when I count the actual time I was sewing (not time spent fixing my mistakes,) I was probably sewing for 5 minutes total if that, the Safety Clutch has tripped 3 more times. What can be causing this? Is there an adjustmant to how sensitive it is? I was sewing automotive vinyl for practice, felled seams, french seams etc. Also the button on my bed will not engage the horizontal shaft. Something may be worn or missing inside. I've had to pry the cam arms so they snap back locked on the timing gear to re-set the clutch, not the most ideal method but all I can do at the moment. Any ideas and suggetions are most welcome?
Have a great weekend. -Vinny
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Old 10-06-2013, 08:16 AM
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No, the clutch is not sensitive, and there's no adjustment for it, it's there to prevent damage to the hook when there is a jam up. The reason is that the hook is the most expensive and important assembly in the lower section of the machine. My guess is that you haven't completely cleared what caused it to jam in the first place. You need to take the bobbin case out to see if there's a bunch of thread twisted up underneath it. Look at post #5 in this thread, it will show you how to take out the bobbin case. just bought a consew 226: testing? etc
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Old 10-06-2013, 07:21 PM
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Thanks Dan, I will open it up tomorrow and see if I have thread jammed in there. I will report back here with the results. -Vinny
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Old 10-06-2013, 08:54 PM
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Under the bobbin case was clean, no thread wound in there. Also I have zero tension on the bobbin thread when sewing, it pulls out with no resistance. Could this cause the thread jams that occur on the underside of the material that I'm sewing? Causing the clutch to trip? Your pictures in the link you posted show what looks like the bobbin tension screw? of the 2 screws its the one to the left.I believe. -Vinny

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Old 10-07-2013, 07:07 AM
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Yes, the screw to the left on the side of the bobbin case is the tension adjustment for the bobbin. The other screw just holds the tension spring down.
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Old 10-07-2013, 01:43 PM
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Dan, I took out the bobbin case to find the tensioner is missing! just 2 holes for the screws. Could this be causing jam-ups? I completely missed it last night when I had it apart. Thanks, Vinny

Last edited by CousinVinny; 10-07-2013 at 02:05 PM.
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Old 10-07-2013, 03:59 PM
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More good news, while rummaging thru the sewing table's draw looking to find the small tensioner clip I need, I came across a thrust washer that would go behind a gear to keep the gears in perfect mesh. The part# stamped on the washer matched the old Singer parts catalog for my model. I had to know if it was never put back or if its an old one from when it was replaced. You guessed it, I took the pinion gear out and no washer! It fit like butter on a warm biscuit and the slop is now gone from the gears, she turns real smooth.
Things are turning out better and better, I was gonna spend $40 for a set of gears and I'm glad I didn't. Now I need to look up how to set the needle timing and get a bobbin tersioner. -Vinny
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Old 10-07-2013, 05:20 PM
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Quote:
Originally Posted by CousinVinny View Post
Dan, I took out the bobbin case to find the tensioner is missing! just 2 holes for the screws. Could this be causing jam-ups? I completely missed it last night when I had it apart. Thanks, Vinny
That really shouldn't cause jam ups, just bad stitches. I have an extra bobbin tension spring. Give me your address in a PM and I'll send it to you.
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Old 10-08-2013, 08:06 PM
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After a few tries (15 actually) I got the hook timing set correctly and the old girl is sewing good. I was really close a few times but not 100%. Then when it was right, it ran without a hickup. I'm looking forward to putting in more seat time and sewing on the 10 yd roll of 'close-out' vinyl I picked up from MiamiCorp. Thanks for all the help Dan, -Vinny
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