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  • Contributing Member
Posted

Red Cent, since you have a similar machine, can you take a pic of yours from the same angle as above for comparison?

Mike DeLoach

Esse Quam Videri (Be rather than Seem)

"Don't learn the tricks of the trade.....Learn the trade."

"Teach what you know......Learn what you don't."

LEATHER ARTISAN'S DIGITAL GUILD on Facebook.

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  • Moderator
Posted

I will photograph the top tension area of my CB4500 Monday afternoon, when I go back into my shop. It is obvious that the disks are being held open when they shouldn't be. A couple of side shots of a normal setup should help the OP figure out if something is just assembled wrong, or bent.

First, that crank with the split on the bottom normally sits completely under the tension disks and only separates then when you raise the feet via the hand lifter knob or foot lifter pedal. However, if the presser bar is binding in the top pressure spring adjuster (the one on the very top, with the hollow threaded screw), it can hang up higher than normal. Twist the pressure adjuster a little and see if the presser foot drops down some more. If the hole in the adjuster was drilled off of dead center, binding could happen. Emory cloth, or a close fit drill bit may clear up that alignment problem. I had to do that to my machine's pressure adjuster.

Until then, second first problem I see in Cleanview's photo is that the thread guide seems to be up too high. It is even possible that the guide is stopping the separator block from letting go. That happened to me once.

When users remove the faceplate to oil the innards, or to reposition the presser bar or needle bar, we sometimes forget to align the split in the bottom of the tension release crank. I did that two days ago. For a couple of jobs I didn't clue in on why the tension wasn't releasing when I floored the foot lifter pedal. Doh!

Posted IMHO, by Wiz

My current crop of sewing machines:

Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.

  • Members
Posted

Here are some more pics......sorry I wont have time to work on this and make replies till this evening.

Thanks

post-23581-0-92660700-1418581725_thumb.jpost-23581-0-00455600-1418581709_thumb.jpost-23581-0-11519400-1418581693_thumb.jpost-23581-0-57712600-1418581674_thumb.jpost-23581-0-70074700-1418581659_thumb.j

Amarillo Texas

bambamholsters.com

  • Members
Posted

OOPS....don't forget that I am knew to machines. I just realized the presser foot was raised and that releases the pressure on the disc. oober mistake on my part.

Amarillo Texas

bambamholsters.com

  • Moderator
Posted

I thought that the rod in the back looked engaged. Let the foot down all the way. If it binds, twist the top adjuster to free it up. The lowered presser lifter should allow the outside to to go all the way down to the throat plate.

Posted IMHO, by Wiz

My current crop of sewing machines:

Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.

  • Members
Posted

Ok. out of this embarrassing learning mistake .........I learned more of what happens when the presser foot is raised. learning as we go but sometimes embarrassing myself in the process :oops:


yes wizcraft is does.

Thanks again

Amarillo Texas

bambamholsters.com

  • Contributing Member
Posted (edited)

The foot pedal is SUPPOSED to drive those discs apart to allow you to pull thread. If it's hanging up, check where the lift chain goes through the casting to see if it's hanging up there. Probably a kick or wiggle of the pedal will free it up. Until you have that solved, the tension is NEVER going to be right.

One thing from your pics.. is that thread routed correctly? On the first guide and tension disc set (where you labeled #1), mine would go through the pigtail (wire) around the tension discs, the BACK THROUGH the pigtail before going down towards the next section. Somebody with that machine chime in -- mine isn't the same and I don't want to have you changing what was already right!

HAVING watched the video of Bob setting up a [very] similar machine, perhaps your thread path is correct. Maybe worth noting, looks like your lift chain is OUTSIDE the drive shaft, but Bob's is INSIDE - between the shaft and the casting. BOTH RIGHT?

Edited by JLSleather

JLS  "Observation is 9/10 of the law."

IF what you do is something that ANYBODY can do, then don't be surprised when ANYBODY does.

5 leather patterns

  • Moderator
Posted (edited)

JLS is right. The lifter chain on my machine is inside, between the axle and the body. Make sure that with the arrangement you now have that the chain allows the foot to go all the way up and all the way down. The crank that the chain attaches to on top must not be interfered with by the axle. The floor lift pedal should go all the way down, starting with the heel down. There should only be a small amount of free motion before the lifter engages and begins lifting the foot. The maximum lift is supposed to clear the bottom of the needle. Sometimes that doesn't quite happen. It only becomes an issue if you need to sew 7/8 inch of leather.

If the foot lifter chain twists, or makes a sharp angle from the hole in the base, it could bind. Keep the links in line with each other and try to maintain the straightest line feeding up.

Edited by Wizcrafts

Posted IMHO, by Wiz

My current crop of sewing machines:

Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.

  • Members
Posted

Your thread path and foot lifter chain are correct. FYI to whom it may concern the 3200 Cowboy is a little different than the 3500 & 4500 Cowboy,cobra 4 ETC. Did the heat shrink tubing fix your problem?

  • Contributing Member
Posted

OOPS....don't forget that I am knew to machines. I just realized the presser foot was raised and that releases the pressure on the disc. oober mistake on my part.

:head_hurts_kr:

glad you got that sorted out. And it looks like I'm re-learning sewing machine diagnostics!

Mike DeLoach

Esse Quam Videri (Be rather than Seem)

"Don't learn the tricks of the trade.....Learn the trade."

"Teach what you know......Learn what you don't."

LEATHER ARTISAN'S DIGITAL GUILD on Facebook.

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