singer 111w155 Singer 111w155 feed lifting cam slop

[kiddcaprix]

Hello all,

Can anyone tell me what kind of clearance should there be between the feed lifting cam fork and the feed lifting cam?  I have noticed a new sound coming from the feed mechanism area and noticed that my cam fork is pretty loose on the cam.  I think as the machine cycles through a stitch, I am hearing the fork "slap" the cam for lack of better words.  I have no reference to the correct clearance between the two components.  I may be able to get a video tonight of the "slop" that I have.  I would probably say that I can rock the cam fork about +/- .030" (.015" per side) about the cam.  To me this is way too much and probably causing the noise.  The machine seems to be stitching fine still.  If anyone can tell me how tight their cam and lifting fork is to each other, I can determine how I want to proceed with fixing it. 

Appreciate any experience, info or links to discussions about this (I have searched for anything on this and can't find much).  Thanks.

 

Regards,
Adam

[brmax]

I dont have a manual in front of me, so would start and say Eric may shed some good light on this. 

With that i can say its not a pressure fed system so the typical .0015- .003” is to tight, this being newer parts. So not really even a splash system so .005+ is tight imo. This system imo “ when “ having been recently oiled draws its oil from the bottom fork and then disperses it to the top through its rotation. So after above counsel the top must have an oil thicness clearance, while picking up its new supply from where ever as a full load or not wiped off.

 

Floyd

[kiddcaprix]

Thanks Floyd, what I assumed was A LOT of slop seems to be the case. A decently tight tolerance is what I figured it should be with respect to oiling tols.  Not knowing the history at all of this old girl, it seems that I might need to tighten that tolerance up.  I am wondering if I can "sleeve" the eccentric if it is just an offset diameter with something like an oilite bushing and then machine to correct tolerance.  This Singer does not see any production type work, so that "fix" might be good enough until I can procure some replacement components.

Thanks,

Adam 

[CowboyBob]

There's a gibe (thin piece of metal) on the right side of the feedcam that has a locking screw that keeps the adjuster screw tight ,so loosen the locking one(it comes in @ a 90 degree angle) then you can tighten it alittle  until the play is gone.Then role the machine around  & repeat on the other one.

 

 

 

 

[kiddcaprix]

Thanks CowboyBob, I wasn't aware of a gib in that area for any adjustment.  I will look at it more tonight.  Looking at the parts manual, there is a felt oiling pad that goes on the cam fork that I don't recall seeing on mine.  That might be causing the tolerance issues for sure if that thing is MIA.  Appreciate the responses.  Great knowledge here.

 

Regards,

Adam

[Uwe]

Personally, I'm waiting for a picture with an arrow. I don't think you all are talking about the same part.

[kiddcaprix]

Good call Uwe. This is not my machine, just an image of a 111w online I found quick (best one I can find since I'm not at home).  I have added the arrows to show the parts I am talking about.  Hope that helps.  The lifting cam fork rocks on the lifting cam by quite a bit.

Regards,
Adam

 

 

[brmax]

The screw above the red arrows is the same as my 212.

although the 212 has another above the mentioned, and very small, almost stud type.  I havent a clue how they adjust. My cam to fork hasn't any noticeable slack fwiw as i tilted it over to veiw. Again im only referencing mine not a 111

Floyd

[kiddcaprix]

Thanks Floyd.  I know in the service manuals I have riffled through, that screw is to adjust the exposed tooth height above the throat plate.  I keep leaning towards the fact that I might have lost the felt oiler (223655 shown below) somehow.  I will have to check tonight.  Don't know how bad the cam fork or cam would wear over time.   I guess maybe pulling some heavy fabrics through over time would wear that especially if the oil wasn't staying in place with the felt.   It just started making the "slapping" sound.  I assume I would have heard that for a while if that oiler was gone.  Thanks for the comments. 

Regards,

Adam

 

 

[dikman]

The felt oiler is just that, a method of keeping an oil coating on the fork/cam contact area. I guess if it's been missing for a long time and the area hasn't been oiled then there may have been excessive wear? If there is wear then replacement would probably be the only answer (could be a big job, assuming you could get the parts!).

Not something I've seen mentioned before.