111W155 Feeding Backwards

[leecopp]

Ok Guys,  I am stumped.

Belt replacement went fine. Hook Timing looks good. Vibrating Foot, Needle and Feed dog are all traveling along together. Stitch length mechanism working.

But, feed sequence is effectively 180 degrees out. As feed dog moves to the rear, it drops and the needle ascends, only to have the needle descend and the feed dog raise for the trip forward. A shakey movie can be seen at:

Help Please.  Don't think this is covered in the military manuals.

Lee

[Constabulary]

I can reproduce your mistake - seems you are turning your flywheel backward but you have to turn it towards you!

[gottaknow]

7 hours ago, Constabulary said:

I can reproduce your mistake - seems you are turning your flywheel backward but you have to turn it towards you!

If he was turning it backwards, the hook would be going the opposite direction than shown in the video. 

[leecopp]

Umm Right. I am turning the wheel in the correct direction.  I removed the outer foot for clarity of feed dog movement .. great observation wiz. 

I first noticed the issue on my first stitching attempt after the new belt.

 

Lee

 

[Constabulary]

3 hours ago, gottaknow said:

If he was turning it backwards, the hook would be going the opposite direction than shown in the video. 

Right - haven´t looked at the hook

[CowboyBob]

The feed is off probably didn't have the take up lever all the way up when he put the belt on ,or the feed cam underneath isn't in the slot on the bottom shaft,the screw that goes in the slot is marked w/a S on the cam.

[Uwe]

Since you replaced the belt, the top and bottom drive shafts may be out of synch. Your machine should have two opposing arrows or some other marks on the lower shaft that need to line up when the thread take-up lever is at its highest point. My Consew 225 hook timing video shows what I'm talking about at the 2-Minute mark:

 

Although that does not quite explain why your needle descends in the back and comes up in the front. I'll drag out my Consew 225 and have a closer look. 

 

Edited April 27, 2016 by Uwe

[Uwe]

I'm still betting on top and bottom drive shafts being out of synch. Here's how my Consew 225 drive shafts move. The thread take-up lever tells you where the top drive shaft is in relation to the bottom drive shaft. Compare this video to yours. In case you're missing the arrow markers on the bottom hook drive shaft, you may need to use some other visual alignment method to figure out when top and bottom shafts are in synch. 

When you install a new belt, you need to put top and bottom drive shaft in the exact, synchronized positions before sliding the belt back on the cog wheels. I've used a hair dryer to warm up the belt, which makes it much easier to slide the belt on and off the toothed cog wheels. 

 

 

Edited April 27, 2016 by Uwe

[Uwe]

One more little video with narration to explain what I was trying to say in the previous posts.

When I purposely installed the belt with the bottom shaft a half turn out of synch (not in the video), my feed movement was reversed just like in your video, so now I'm convinced that your shafts are out of synch.

 

 

 

 

Edited April 27, 2016 by Uwe

[leecopp]

Hey Guys, thanks for the continued support.

Cowboy Bob .. with the take up lever all the way up , the alignment arrows are spot on (just like Uwe's in the still above).  I didnt quite catch your meaning about the feed cam not being in the slot.. I will study on that a bit.

UWE - The belt being off by half rotation does sound enticing, and it is something I can check fairly easily.  Thanks for your videos, they turned out super nice.

 

Lee in HOT Florida