Singer 31-15: How far can I go before I get myself in trouble?
#51
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
OK Folks,
I took the pulley's off. It was easy and I learned a bit. Below there should be 2 pic's of the two pulley's where they mate. I made a good guess as to the clutch material. On the driven pulley there is a ring of leather that goes up against a stop pin (see the tip of the screwdriver) and there is a flat cast plate on the outer side of the driev pulley's. It looks like my leather ring may be a bit worn but I'm going to try to adjust it to where it works for now.
David
I took the pulley's off. It was easy and I learned a bit. Below there should be 2 pic's of the two pulley's where they mate. I made a good guess as to the clutch material. On the driven pulley there is a ring of leather that goes up against a stop pin (see the tip of the screwdriver) and there is a flat cast plate on the outer side of the driev pulley's. It looks like my leather ring may be a bit worn but I'm going to try to adjust it to where it works for now.
David
#52
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
Dried oil on both the leather ring and the cast clutch plate seems to be the reason for the clutch not wanting to disengage. Both have had a first cleaning with engine cleaner and a brass brush. Looks like they are both going to need a good cleaning in the parts washer. At least we are getting closer to getting the table back together.
David
David
Last edited by DavidH; 01-20-2016 at 12:40 PM. Reason: bad grammer and spelling
#53
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
31-15 Clutch Rebuild
Restoring this clutch has been a real learning experience. You never know what you will find. In my case I found that the oil hole for the main shaft had been filled in by a mud dauber. No telling how long since it had been painted over. I got the shaft out and found a key way cut down the side with a dry leather strip and a piece of what looks like hemp under it. The shaft is a tube that was plugged at each end and when I punched out one of the plugs I found more of the hemp looking threads that looked to be covered in a gunky grease. When I put it back together I plan on using a 0.13" felt wick under the leather and 3'8" felt wick down the bore before replacing the plug. The wedge that engages the clutch has several worn areas instead of a smooth incline so I am going to mill it back smooth. I am running all the pieces through an electrolysis cleaning before repainting. When rebuilt I expect a very smooth running clutch. When a bit more of the work is done I'll have several photo's of the restore.
David
David
#54
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
I'm needing help again with my 31-15. The plug for the oil hole on the right side of the machine post is missing. I have the machines to make a plug, but I'm needing photo's of this plug to make one that at least looks like it belongs. Anyone that has a 31-15 with the plug if you would could you please post a couple pic's. Put a penny or a ruler in the picture for a good size gauge. I can use an old machinist trick to find the thread by threading a piece of soft wood into the hole and then measure the threads per inch. I just want the plug to look like the original.
Thanks in advance
David Hair
Thanks in advance
David Hair
#57
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
Several of the repairs were not original. The old oil wicks that looked to be hemp I replaced with felt. The wood plug that was used as a bushing for the drive pulley.
I machined a piece of Oilite to replace it. I think the Oilite will do much better than the wood dowel.
I machined a piece of Oilite to replace it. I think the Oilite will do much better than the wood dowel.
#59
Member
Join Date: Dec 2015
Location: Dalton, GA
Posts: 31
Lisa,
I'm a nubie when it comes to sewing machine repair and just thinking about getting into restoration of a sewing machine or two. For my work machine I just want it to run well and we have materials today that singer didn't have when my machine was made. Anyone that really does machine restoration might just give me a cold shoulder for some of the mods I make. I do like to make the machine look nice, but working good is the main thing I'm after right now.
David
I'm a nubie when it comes to sewing machine repair and just thinking about getting into restoration of a sewing machine or two. For my work machine I just want it to run well and we have materials today that singer didn't have when my machine was made. Anyone that really does machine restoration might just give me a cold shoulder for some of the mods I make. I do like to make the machine look nice, but working good is the main thing I'm after right now.
David
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