Adler 69 - weird sound (video)

[Leatherbag]

Hello everyone,

about 3 months ago, I purchased an Adler 69-373, which looks like new and it seems that it was almost never used before. It came with a clutch motor which I changed to a servo motor.

Now that the silent motor is build in, I hear that it makes an awful sound when the presser foot moves, please find here a video:

https://vimeo.com/350508735

I oiled everything and removed some parts of which I believed they could cause the sound, but I still could not find a solution. By now, I think that the sound is caused either by a bent presser foot bar (which optically looks perfectly straight though) or the general lifting force. It definitely comes from the movement of the presser foot - when the presser foot is not moved, but the upper feed and the needle move, the sound is not there.

In the service manual (see attached picture), I found a part that seemed to fit perfectly my problem (it says that roller 4 must lie tight on the sliding piece 5 in order to prevent a kind of growling sound when the presser foot moves), but no matter how I position the sliding piece, the sound is still there.

Now I am afraid that the whole construction or the cast body is somehow distorted and that leaves me pretty frustrated - finally having such a beautiful machine that makes this awful sound and I cant find a solution for 5 full days

So I really hope that you guys can help me and Ms. Adler

 

[Mark842]

Had a sound similar to that On one of my machines a few years back. Turned out it was the feed dog rubbing on the side of the slotted plate. Have you tried checking that yet? I remember I checked everything up top swearing that was where the sound was coming from and as a last ditch effort loosened the screws on the plate and poof..plate moved, sound gone.

[Leatherbag]

Hi, thank you.

I already checked that, but the sound comes from the upper part and has something to do with the parts that move when the presser foot goes up and down. I marked the area of which I think that there is the source of the sound. If I turn the handwheel and come to the point when the presser foot is lifted, it gets pretty hard to turn it and the sound starts.

[Leatherbag]

Hello,

still looking for a fix for this weird sound.
Does anyone (maybe someone with an Adler 69-373) know, if its normal that the gray part (I marked it orange in my previous post) moves a bit to the sides while going up and down? Please find a video here: https://vimeo.com/350731298

I think that somehow this gray excenter is pulled or pushed by something else out of its position but I cant figure it out.

It would help me a lot if someone with an Adler 69 (or a similar 67) could have a look at my latest videos (https://vimeo.com/user98044619) in order to tell me if there are some unnormal movements that could cause the sound. Of course I can comment on the videos if you need more info.

Thank you very much in advance,

best wishes from Germany!

[Wizcrafts]

That's definitely not according to Hoyle! Something has come loose or unscrewed, or out of its bearing.

[chrisash]

On your video the bar that moves up and down on the left where it goes into a vertical block with two screws has a worn surface just showing where the bar enters the block

[Leatherbag]

4 hours ago, Wizcrafts said:

That's definitely not according to Hoyle! Something has come loose or unscrewed, or out of its bearing.

Thank you very much! I cant figure out which part could be loose. When I check by hand, everything is very tight, but somehow as soon as the excenter moves up and down something pushes or pulls it out of position. Maybe its the silver joint because it also moves a little bit. But I cant figure out how to check that safely. I am pretty afraid that its something that can not be repaired :/

58 minutes ago, chrisash said:

On your video the bar that moves up and down on the left where it goes into a vertical block with two screws has a worn surface just showing where the bar enters the block

Thank you very much! Do you mean this part on the machine itself (please see photo)? I just polished that area very slightly because I thought that the bar would rub on the machine, but I am pretty sure it does not. Or do you meant something else?

So I'd really appreciate any more hints what to check....

Edited July 30, 2019 by Leatherbag

[paloma]

Hello,

i dont know if it can help, but mine ( exactly the same model ) songs very differently , there is something anormal in your.

[Leatherbag]

Hi Paloma,

thank you very much! Can you tell me if the excenter moves also to the sides at yours? At mine, it moves very slightly and the silver joint also moves. Dont know it that has something to do with the noise or if this slight movement is just normal? That would help me a lot!

[RockyAussie]

I have been looking at my 69-372 for a good while now and although I found 3 hornets nest in it, it does not make any similar sound. I did have this problem on a Pfaff 335 I think and the answer was that the back presser bar was lightly bent. 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. I would think it is possible that your presser bar is bent or the top tube has been bashed or more likely the bottom of the bar at the foot has been bashed. I did notice in your first video 23seconds in ,that the appeared to be some heavy scouring on the back of the presser shaft.

[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.

[Leatherbag]

Yes ok, I will do some tests with the bar. A bent arm is what I am afraid of because I am not sure if I am able to bent it to the right form and I am afraid that its not available via Adler. Asked them already and waiting for a reply. Have to leave now for about 2 hours and will let you know later.

Thank you very much for your help.

[RockyAussie]

3 minutes ago, Leatherbag said:

Yes ok, I will do some tests with the bar. A bent arm is what I am afraid of because I am not sure if I am able to bent it to the right form and I am afraid that its not available via Adler. Asked them already and waiting for a reply. Have to leave now for about 2 hours and will let you know later.

Thank you very much for your help.

Your welcome. I have to go get my dinner now so will check how your going tomorrow. Its 8.30 pm here at the moment. Check @Uwe he may be of help here.

[Leatherbag]

Ok enjoy your meal Yes it would be soooo great if @Uwe could help, I already enjoyed many of his videos

[Leatherbag]

@palomaYou could do me a huge favour if you could check the following on your machine (as you have exactely the same model):

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 advas it with ncing motion."
At my machine, it lightly moves though, please see here: https://vimeo.com/333766977 and here: https://vimeo.com/350582370

But if I sew on material, it doesnt transport the material, but its moving though. Dont know if this problem is connected to the sound problem.

How is it with your machine? Does it move or is it completely quiet when you set stitch lenght 0 and sew?

Edited July 30, 2019 by Leatherbag

[mikesc]

If you set any machine to stitch length "zero" the feed dogs will move "up and down" "on the spot" and so will the needle..but the feed dogs will not move "front to back", nor will the needle..Which is your machine doing..are the feed dogs and the needle merely moving " on the spot"? or are they moving from "front to back" ?

And a really obvious question, but..have you tried putting that "shim" that you took out

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.

back into the place you took it out from ( it is probably to "control bearing end float" ) and oiling the bearing and the bearing shaft at that point..?

Edited July 30, 2019 by mikesc