Juki DDL-5550 Industrial Straight Stitch Sewing Machine, Servo Motor - Answered Questions & Fixed issues

Question edited for clarity. Question moved from Cars and Trucks category. Engineers Manual, fuse mentioned on Page 38.

ddl-555-5_100&200,engineer's manual,(no.i-14).pdf

Amazon.com https://s3.amazonaws.com > JUKI+ENGINEERS 5-1. How to replace the fuse. 5-2. How to replace the sensor control knob asm. (M8521-110-0A0). 5-3. How to replace the synchronizer. 5-4. 72 pages

Question edited for correct name of the maker 'judi' to 'Juki'. Question moved from Office Equipment. Motor Failure. https://www.google.com/search?q=juki+5550-6+e7+error ..

The 'shank' on your zipper foot is too long and is holding your upper tension open. When I get a rogue foot like this, I set my old foot and my new foot, side by side on a flat surface and measure the height from the surface to the bottom of the hole where the foot is screwed onto the presser bar. When I see how much difference there is, I mark it and take my Dremel and cut the hole lower on the new foot. This will usually fix the problem. The only other thing you can do is to adjust the height of your presser bar to accommodate the zipper foot but now it won't fit your regular foot so you have a new problem. :)

What do you mean by lock up? Does it go ahead and run after that? A servo motor always turns by hand. There isn't any moving mechanical parts inside a servo motor. It is electrical current that makes it stop and go.

A few drops will do.

sounds like a overheating issue related to motor and power transformer. Have that looked at by a trained repair technician, the motor is overheating when used, this may be why it shuts down after a bit of sewing. But runs a bit more after it cools down. Cheers, Embroidery Services San Diego, CA

go to the right side of machine and take cover off that is where the timing belt is and see if it is broke or something is holding it up

Mine does this too sometimes. Lift up the head and look in the middle of the oil pan. The knee controller runs through there. Make sure the black knob is not stuck. Hit the knee thing a couple of times to make sure it is not stuck. It should move freely up and down. That may fix the problem. If not, look st the small post to the left and behind the oil intake. Move the manual presserfoot lever on the machine to see it move. It will be stiff, but it should still lift a little. Usually jigging these two parts will fix the problem. Good luck..

there could be something wrong with the foot pedal, it may need to be serviced or replaced, or there could be something wrong with the plug where the foot pedal plugs into

Oooh, consult your owner's manual. Frequently, industrial machines are limited in their capabilities so your machine may not have the feed dog lowering ability. Some other domestic machines without the capability can use a plate to cover the feed dogs while free motion quilting, but that probably wouldn't be a good thing to try if your machine is not made for sewing without the feed dogs in use. ...

HI THERE can you please tell me more information about control box model ? so many ways to resolve this problem but it's different from control model to control model , a waiting your reply to tell me control model then i try to do the best to resolve this problem. thanks and best regards ASHRAF ABOZID [email protected] CAIRO - EGYPT

I could not find that error using the Manual that is on the Internet. I suggest you call or email their Sales and Service in the U.K. Their email is [email protected] JUKI DDL 5530 DDL 5550 Parts Needles Service

Again: JUKI DDL 5550N Manuals

Does this look like yours? JUKI DDL 5550N Handbook

HI Gina did you please check power source coming to power switch or No ? one more thing , please let me know which control box model you are using then i can send to you photo for fuses place to check maybe one fuse burned and need to replace. thanks and best regards ASHRAF ABOZID CAIRO - EGYPT [email protected]

check the tension of the belt.

there two holes on the side plate where the presser ft bar is located. take off the rubber cover and a screw will be visible. this screw controls the presser ft. height and angle of ft. place ft all the way down and cnter needle in foot slot and them tighten screw. use an long screw driver because u get more leverage. in fact long screwdrivers are the only thing to use on machines. every one should be ground to fit the different screws. anyway raise the foot to see how much clearence u have and adjust accordingly.

loosen the screw that holds the tension device in place and remove the whole thing. if it won't pull right out use a small screrw driver in the take up spring slot to help it out. probably whats wrong is the small screw at the rear of the tension device is loose. u need a very small screwdrive to tighten this and don't put tons of pressure on the screw only to have to drive slip off and slice your finger. don't misplace the pin that opens the thread tension disksn when presser foot is up position.

First thing to check is if you've got the right needle system: http://partsbooks.sewingmachine.com/Instructions/Juki/Industrial/DDL-5550%20&%205530%20Instruction%20Manual.pdf and that the needle is correctly oriented... the scarf has to be precisely set. The next things I'd check are the stitch cycle -- hand crank the machine through the normal stitch cycle and see what's hitting. Then fix that. I've got my suspicions this may be a needle bar height adjustment. Don't thread up for this test... misthreading can also cause the needle to hit something and break, so start with the fewest possible variables first.

theres a screw that controls the amount of oil that reaches the upper head. tilt machine back and look for screw with head that has an arrow indicating + or - tighten in minus direction. maybe u need a new needle bar guide too.