Editing Juki Maintenance Notes

Jump to: navigation, search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision Your text
Line 41: Line 41:
  
 
* '''Description'''
 
* '''Description'''
The Juki 5550-6 has a polished rod that holds the needle with a set screw. The hole that holds the set screw that holds the needle got stripped and then someone made some improvisations instead of fixing the problem by ordering and replacing the part. That wasn't good because we lost the thread guides in the process.
+
The Juki 5550-6 has a polished rod that holds the needle with a set screw. The hole that holds the set screw that holds the needle got stripped and then someone made some improvisations instead of fixing the problem buy ordering and replacing the part. That wasn't good because we lost the thread guides in the process.
 
 
[[Image:Needle_Bar.JPG|thumb|right|Needle Bar part #22906002]]
 
[[Image:Needle_Bar_Thread_Guide_Juki_229-20805.jpg‎|thumb|right|Needle Bar Thread Guide part #229-20805 or alternative part number #110-18801]]
 
[[Image:Needle_Bar_Thread_Guide_Juki_229-06309.jpg|thumb|right|Needle Bar Thread Guide part #229-06309]]
 
  
  
Line 58: Line 54:
 
You need a large-ish phillips screw driver and several medium and small slotted screw drivers. You also need an egg carton or tray to hold the various parts.  
 
You need a large-ish phillips screw driver and several medium and small slotted screw drivers. You also need an egg carton or tray to hold the various parts.  
  
Remove the needle, the set screw that holds the needle, and the thread guides (Juki part numbers #229-06309 and #229-20805 or alternative part number #110-18801)
+
Remove the needle, the set screw that holds the needle, and the thread guides (Juki part numbers #229-06309 and #110-18801)
  
 
Remove the small rubber cap on the top of the machine. Its about 6mm in diameter.
 
Remove the small rubber cap on the top of the machine. Its about 6mm in diameter.
  
Unscrew the three phillips head screws that hold the large, black face plate on the left side of the machine. They are the screws around the perimeter.
+
Unscrew the large, black face plate on the left side of the machine.  
  
Once the needle bar mechanism is visible... Inside the faceplate, remove the black plate that covers the upper half of the needle bar. Remove the screw that holds the needle bar to the rotating crank arm mechanism that moves the bar up and down. Use the correct size driver for this last screw, its stiff and can be stripped if you use the incorrect size driver.
+
Once the needle bar mechanism is visible... Inside the faceplate, remove the black plate that covers the upper half of the needle bar. Remove the screw that holds the needle bar to rotating arm that moves the bar up and down.  
  
 
The needle bar slides straight up and out of the top of the machine.  
 
The needle bar slides straight up and out of the top of the machine.  
 
Note that the needle bar has score marks several centimeters above the screw holes. They are visible if you enlarge the image on the right. These are for Needle to Bobbin Hook alignment described in page 6, section 18, of the Manual: [[Media:Juki-ddl-5550-6.pdf]]
 
  
 
Insert the new needle bar with the faceted side facing you and the set screw hole facing right of the sewing machine operator.
 
Insert the new needle bar with the faceted side facing you and the set screw hole facing right of the sewing machine operator.
  
Tighten the screw on the rotating crank arm mechanism. As noted two steps above, you will have to adjust the Needle to Hook relationship as described in the manual section 18.
+
Tighten the screw on the rotating arm. Replace the black plate. Replace the thread guides (Juki part numbers #229-06309 and #110-18801). Replace the needle (notch facing to the right of the operator). Replace the set screw that holds the needle.
 
 
Replace the black plate.  
 
 
 
Replace the thread guides (Juki part numbers #229-06309 and #110-18801).  
 
 
 
Replace the needle (notch facing to the right of the operator).  
 
 
 
Replace the set screw that holds the needle.
 
 
 
Replace the big black faceplate on the side of the machine and the three phillips screws that hold it on.
 
  
 
Its probably a good idea to change the sewing machine oil. This can be a very messy process if you overfill it. It will spill on the floor, so don't overfill it! Use new oil because used oil may contain a tiny amount of water which will eventually rust the mechanism.
 
Its probably a good idea to change the sewing machine oil. This can be a very messy process if you overfill it. It will spill on the floor, so don't overfill it! Use new oil because used oil may contain a tiny amount of water which will eventually rust the mechanism.
 
  
 
* '''Last Replaced''' (log replacement date here)
 
* '''Last Replaced''' (log replacement date here)
 
June 21, 2013 - Chris Murphy
 
June 21, 2013 - Chris Murphy

Please note that all contributions to Noisebridge are considered to be released under the Creative Commons Attribution-NonCommercial-ShareAlike (see Noisebridge:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following CAPTCHA:

Cancel Editing help (opens in new window)