chasman52

"Oil is cheap compared to replacing parts!" and the two hours production I lost. BoB are those parts available? The screw/pin? the assembly? cost.? Bob, thanks for the advise .!!

I got rid of the squeak for now by disassembling & cleaning these areas up and polishing the screw/pins. highlighted by the arrow. there was some galling in one of the pins. I smoothed it very lightly with white rough and crossed my fingers. AFTER AN HOUR, The squeak is gone for now, but i will look into replacing these parts if it comes back. In the future I will not overlook the required maintenance these area requires. REMOVE THE COVER AND OIL AS RECOMMENDED!!

Yes I did. I was able to lessen the rub by loosening the screw 1/4 turn. ( the screw left and below the one in the pic with an arrow

Oiled holes in the assemble and all next to it. it helped but the galling sound persists. can I disassemble and clean ,polish? Will that help. Machine still runs excellent . NOTE: correction- arrow in picture pointed to wrong joint. the joint to the lower left is the noisy one. I have disassembled , cleaned and reoiled, but slight noise still heard if run slow.

I will do that and be right back

I know the cause is poor maintenance, or time, or both, but what can I do before it gets worse? This bearing is bad. I know it because if I loosen this 1/2 turn the squeek stops. Anyone familiar with this assembly that can advise much appreciated!!!!!! Charles C3leatherworks Miami Fl.

WOW

JLS: & Wiz Great pic JLS!!! it worth more than 2000 word. You assumed correct. I removed the spring before I took the picture. Those springs seem so brittle. So I called the manufacturer The Leathemachine company sent me a new spring and the translucent sticker. Now,I have a little more upper tension adjustment with 207 thread, I sent them(leathermachineCo) the picture of the bobbin and they said it can be run like that. I've been using it at 6 SPI. I haven't experimented with a longer stitch yet. I'm still feeling my way along. I thinks I've viewed every cowboy, , cobra , juki 441 video I could find. I need to check out Techsew It does very well with 277 and 207 at 6 spi. Thanks for the replys you guys rock Charles C3leatherworks Miami FL.

Good call, I checked the spring without thread and there's no tension left in the spring. I'll, replace that first. Thank you

I picked up a new to me cobra 4 with EPS. I've spent a lot of my free time going over all the info here and on the web. At first, it cycled smooth, but the stitch was inconsistent. I went through the adjustments . The help you get from the leather co. website, here, youtube is awesome. Now I'm stitching 277 and 207 in 1/4 to 3/8" very nice I still have some issues . 1. My bobbin holder has a nick/gouge( see photo ) 2. My motor (TN422B ) was never modified to go slow. How do I tell if this gouge is going to cause me problems? I have heard that the Leathercompany has a modification for my motor to improve the speed control. I want to tell you how much I've enjoyed this Forum . You all helped me so much on my machines

Offer accepted , deal pending

sent u a message

THanks UWE, my hook has way over double that much play. I'll closed up the play to about .060. It's not stiff or tight, but it's not loose