Adler 69 - weird sound (video)

[Leatherbag]

16 minutes ago, RockyAussie said:

I would think it is possible that your presser bar is bent

Ok thank you. I thought that too but even if I sew completely without presser bar, the excenter moves slightly to its sides. But maybe thats normal because it needs the bar to stay in position? I could order a new bar for about 50 euros, so maybe its worth to try that..

 

16 minutes ago, RockyAussie said:

 or the top tube has been bashed

With tube - do you mean the presser foot bar?

 

16 minutes ago, RockyAussie said:

On that machine I found I had to find a loose spot in the adjustment of the presser tension tube and I was able to get away with that.

How did you find this loose spot? With presser tension tube you mean the presser foot bar? And how did you get away with it?

16 minutes ago, RockyAussie said:

I did notice in your first video 23seconds in ,that the appeared to be some heavy scouring on the back of the presser shaft. 

Which 23 second video do you mean? Can you post the link please?

 

Edited July 30, 2019 by Leatherbag

[Leatherbag]

deleted - edited previous post

Edited July 30, 2019 by Leatherbag

[RockyAussie]

5 minutes ago, Leatherbag said:

With tube - do you mean the presser foot bar?

No I mean the adjustment thing on top. You undo the lock nut in order to tighten or loosen the presser foot pressure. The presser bar goes up into that tube. I doubt that, that would be bent as I dont think it is all that tight of a fit there.

[Leatherbag]

Ah ok, you mean this dark bronze thing, right (its not my machine on the pic)? I guess thats not the problem because the sound is also there when I remove this thing and push the pen in it by hand...

[RockyAussie]

15 minutes ago, Leatherbag said:

How did you find this loose spot? With presser tension tube you mean the presser foot bar? And how did you get away with it?

The pfaff does not have such an adjustment as the Adler but can still be made to do it. They are a way tighter fit at that point where the bar goes up into the tube. Note on this one I have raised the tube higher than standard to get less foot pressure marks.

[RockyAussie]

5 minutes ago, Leatherbag said:

Ah ok, you mean this dark bronze thing, right (its not my machine on the pic)? I guess thats not the problem because the sound is also there when I remove this thing and push the pen in it by hand...

Yes that is it. My bearing on the 69 does not move left and right as does yours. On page 14 in this service manual the bearing part number 4 is firmly bolted with no movement other than rotation. http://www2.duerkopp-adler.com/export/sites/duerkoppadler/commons/download/public/69/S_69-373_69-373H_EN.pdf

[Leatherbag]

2 minutes ago, RockyAussie said:

Yes that is it. My bearing on the 69 does not move left and right as does yours. On page 14 in this service manual the bearing part number 4 is firmly bolted with no movement other than rotation.

Ah ok thats pretty interesting. Mine can move, as shown here:  https://vimeo.com/manage/350787680/general

I thought maybe there is a piece missing, but checked with the picture and all pieces are installed at my machine in the same way. Could you please tell me how many mm is the width of your roll? Maybe mine is to short?!

[RockyAussie]

3 minutes ago, Leatherbag said:

Could you please tell me how many mm is the width of your roll? Maybe mine is to short?!

The diameter of the bearing? I just measured and it is 9.7mm.

[Leatherbag]

Ah sorry, I made a mistake - thought you'd have the same machine. On my Adler its 7.1mm. But I checked again and the bearing fits perfectly on the shaft, but there are about 2mm space to the right until the silver part, but I guess thats normal. At this silver part there is normally a sliding piece (I've removed it on the picture), which should lie tight on the bearing in order to prevent a kind of growling sound when the presser foot moves (sais the manual and I thought that this is my problem), but no matter how I position the sliding piece, the sound is still there.

There is another thing that I noticed when I checked my machine with the service manual. I'm just saying this because I am wondering if it could have something to do with the noise.
The manual says:
"In the zero position of the stitch regulator lever, the feed dog and theneedle should not make any advancing motion when the handwheel ismoved.–Set the stitch regulator lever 3 to “0”.Loosen the butterfly nut 1.Turn the adjusting screw 2.Tighten the butterfly nut 1.–Turn the handwheel.The needle and feed dog should not make any advancing motion."
At my machine, it lightly moves thoug, please see here: https://vimeo.com/333766977 and here: https://vimeo.com/350582370

Do you think that this could have something to do with it? Unfortunately there are no instructions about how to correct this.

 

 

Edited July 30, 2019 by Leatherbag

[RockyAussie]

52 minutes ago, Leatherbag said:

I could order a new bar for about 50 euros, so maybe its worth to try that..

I would try rotating the bar around (without the foot on) and see if you get any different behaviour first. Rolling the bar on some glass should also give you some idea if straight. If you think it looks alright then it must be a bent connecting arm I guess.