The thread feeder radial bearing will have obvious defects when it requires replacement. The radial bearings inside will develop flat spots from damage or wear and the bearing will turn on the center rim roughly, or the sealed bearing will show lubricant leakage.
Replacement Part Needed:
Bearing,Ball,Radial,Sealed,5 ID X 16 OD X 5 Thk
Replacement Procedures:
Figure 1 - Radial Bearing
2. Turn the machine OFF.
Figure 2 - Radial Bearing Behind Needlecase
3. The radial bearing will then be accessible as shown in Figure 2 above. Remove the two thread tubes above the bearing.
4. Remove the screw with a .074" or 3mm Allen wrench and the split lock washer.
5. Install the replacement bearing and start the screw with a split lock washer loose.
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Note: The radial bearing is a sealed bearing and does not require any additional lubrication. |
6. Position the radial bearing so it depresses the stud on the back of the thread feeder arm for needle #1 about half way, then tighten the screw to Melco Torque Specifications.
7. Check that the bearing depresses the stud on the rest of the needle positions.
8. Replace the thread tubes in position above the screw.
