leecopp Report post Posted April 27, 2016 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 Quote Share this post Link to post Share on other sites
Constabulary Report post Posted April 27, 2016 I can reproduce your mistake - seems you are turning your flywheel backward but you have to turn it towards you! Quote Share this post Link to post Share on other sites
gottaknow Report post Posted April 27, 2016 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. Quote Share this post Link to post Share on other sites
leecopp Report post Posted April 27, 2016 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 Quote Share this post Link to post Share on other sites
Constabulary Report post Posted April 27, 2016 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 Quote Share this post Link to post Share on other sites
CowboyBob Report post Posted April 27, 2016 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. Quote Share this post Link to post Share on other sites
Uwe Report post Posted April 27, 2016 (edited) 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 Quote Share this post Link to post Share on other sites
Uwe Report post Posted April 27, 2016 (edited) 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 Quote Share this post Link to post Share on other sites
Uwe Report post Posted April 27, 2016 (edited) 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 Quote Share this post Link to post Share on other sites
leecopp Report post Posted April 27, 2016 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 Quote Share this post Link to post Share on other sites
Uwe Report post Posted April 27, 2016 (edited) Three things need to be in the right spot at the same time for proper feed timing: 1. Thread take-up lever at the very top 2. Arrows on the hook drive shaft aligned 3. Feed dog all the way to the front It's possible your feed eccentric assembly (the part that changed the stitch length, "wobbles" around the drive shaft and moves the feed lever) has shifted/rotated on the hook drive shaft. It's supposed to sit in a very specific position on the hook drive shaft, usually by means of a set screw in a lengthwise slot carved into the hook drive shaft. If point 1. and 2. are in the right spot, but the feed dog is not in the front, your feed eccentric itself may be out of alignment somehow. Dial in the maximum stitch length first to make it easier to tell the position of the feed eccentric and feed dog. Edited April 27, 2016 by Uwe Quote Share this post Link to post Share on other sites
leecopp Report post Posted April 29, 2016 Some Progress .. hang in there The bottom shaft drive/timing gear was not seated into a shaft groove .. the set screws straddle the groove, one is marked with an S. The feed dog eccentric appeared to be tight to the bottom shaft, but actually was not (set screws were firm, but not tight) allowing it to move on the shaft. The feed dog lifting cam is seated correctly on the shaft. So need to figure out which set screw locks the timing gear and eccentric into the proper orientation and try once again at getting the upper and lower drive shafts synced. Looks like the goal is to have the feed dogs forward and the lifting arm at the top. There is anecdotal evidence the owners husband was a tinkerer who sadly had diminished capacity toward the end.. Cowboy Bob, did you mean the Setscrew on the Drive gear is marked with an S engages into the slot? The feed dog cam only has 1 setscrew on my machine. Hold on Breaking news .. Reset the feed eccentric and the drive gear , aligned the arrows and put the belt back on and the feed is working correctly - Max stitch length is more than 1/4" ! The needle timing looks close but can't see very well till I take off the needle plate and it is time for bed. Thanks for being there guys. more details to work out. Lee Quote Share this post Link to post Share on other sites
leecopp Report post Posted May 1, 2016 All issues resolved, dreaded previous owner had tweaked around with about anything that would tweak, Timed hook, adjusted presser feet (hardest part to understand), got all the pieces lined up with the proper grooves. As others had mentioned, too much internal resistance to run on a normal industrial treadle. too bad, I am guessing a servo motor is in my future since the clutch motor is a little flakey .. at least it has a modern three hole mount. Sewed single index card and 4 layers of heavy poly webbing (barely fit under the feet). Was using v92 dacron since I already had it on the right style bobbin. No problems. Thanks to all for their help. Happy Day Lee in florida Quote Share this post Link to post Share on other sites
CowboyBob Report post Posted May 2, 2016 These are the worst ones to repair,where someone else has turned & adjusted things that didn't need adjusting. Quote Share this post Link to post Share on other sites
