Video Demonstration:
Please follow all of the maintenance procedures carefully and apply the proper amounts of the specified lubrication during each step.
Melco cannot be held responsible for any machine damage due to lack of or wrong type of lubrication. Melco cannot be held responsible for any machine damage due to not following the listed maintenance steps.
You will now be guided through the thread feeder maintenance procedure.
Press the next button to continue.
Lift Pinch Rollers
Lift all sixteen (16) thread feed roller arms as shown in the image.
Press the next button to continue.
Remove Thread Feed Front Covers
Although not necessary, it is helpful to move the threads up between the rollers and out of the way. With a small flat blade screwdriver or your fingernail, disengage all sixteen (16) thread feed front covers and remove them from the
machine.
Press the next button to continue.
Remove Thread Feed Rollers
Using two thin-bladed flat screwdrivers or the thread feed gear removal tool, carefully pull the thread feed rollers out of the assembly. This can be accomplished by sliding one screwdriver along each side of the roller and prying against your fingers as shown in the image. Set the rollers to the side. They will be cleaned and inspected in future steps.
Important: Do not get grease on the thread feed surface of the roller.
Press the next button to continue.
Clean Assembly
Using a clean cloth, remove any lint and old grease from the cradle that holds the rollers. In the image, this is done with the cloth wrapped around the grease applicator for better control of the cloth.
Press the next button to continue.
Clean And Inspect Rollers
Using a clean, dry cloth, thoroughly clean the entire surface of the thread feed roller. Remove any lint or grease.
Important: Do not get grease on the thread feed surface of the roller. Inspect the roller for wear, nicks, or grooves that may catch thread. If the roller is damaged, replace it with a new one.
Press the next button to continue.
Grease Roller Hub
Using the image as a guide, apply three (3) small dots of EMB Polymer grease to the side of the hub. Do this for each side of the thread feed roller.
Press the next button to continue.
Reinstall Thread Feed Rollers
Carefully reinstall the thread feed roller. The gear side of the roller should fall to the left. Align the roller with the slot and gently press forward and down until the roller snaps into place.
Take care to clean up any grease that may transfer to the front of the slot.
Press the next button to continue.
Reinstall Covers
Reinstall the front covers by holding them at the bottom and tilting them up. Insert the top of the cover into the slot at the top of thread feeder assembly. You will probably feel a slight click as it locks into place.
Rock the cover forward and down until it snaps into place. Keep in mind that the covers overlap and will reinstall easiest starting with needle 1.
Press the next button to continue.
Remove Pinch Rollers
Next you need to remove the pinch rollers. This is easiest if you leave the thread feed levers up. Then steady the lever with one hand and pull the roller to the right with the other. This will release it from the hub.
Next, lower the lever and angle the roller. It can then be pulled forward and free from the machine. If the lever beside the roller is in the way, gentle pressure may be applied to move it slightly out of the way. Set the rollers to the side. They will be cleaned and inspected in future steps.
Important: Do not get grease on the pinch surface of the roller.
Press the next button to continue.
Clean Lever Hubs
Using a clean cloth, clean all the old grease, lint, and residue from the lever hub. In the image, the cloth was wrapped around the grease applicator for better control.
Press the next button to continue.
Clean Pinch Rollers
Using a clean, dry cloth, thoroughly clean the entire surface of the thread feed roller. Remove any lint or grease.
Important: Do not get grease on the pinch surface of the roller. Inspect the roller for wear, nicks, or grooves that may catch thread. If the roller is damaged, replace it with a new one.
Press the next button to continue.
Grease Lever Hub
Using EMB Polymer grease, apply a small amount of grease to the lever hub as shown in the image.
Press the next button to continue.
Grease Pinch Rollers
Using EMB Polymer grease, apply a tiny amount of grease to the outer surface of one (1) of the three (3) small pegs inside the pinch roller as shown in the image.
Press the next button to continue.
Reinstall Pinch Rollers
With one lever up and one lever down, hold the pinch lever at an angle and slide it back into place. Rock it back onto the hub and slowly rotate to begin spreading the grease evenly around the hub.
Snap the roller back onto the hub and spin the roller to ensure that it is locked into place and the grease is spreading evenly.
Press the next button to continue.
Align Threads
If you moved the threads originally, move them back into place. Align the threads onto the v-notch in the front cover and lower thread feed levers.
Press the next button to continue.
Finished!
This completes the quarterly maintenance procedure.
Press the finish button to exit the maintenance procedure.
