Specifications

Replacing Needle Case Cross Roller Bearing
Refer to the figures within the needle case removal and installation procedures for
this procedure.
1. Remove the needle case as described previously in this manual.
CAUTION! In the next step, some needle cases may become free to move off the
sides of the embroidery heads if bumped. To account for this possibility, you should
attach a clamping device on the outside ends of the v-rails of any embroidery heads
that are put into this situation.
2. Loosen the clamps holding the needle case linkage shafts and remove the linkage
shafts from both sides of the head being worked on.
3. Carefully slide the bearing retainer plate assembly with cross roller bearing off
either end of the V-rail.
4. Position the new cross roller bearing onto the V-rail and install the bearing
retainer plate assembly. Refer to the cross roller bearing adjustment procedure
in Section 2 of this manual.
5. Check for proper adjustment of the bearing retainer plate assembly bearings by
referring to the adjustment procedure for bearing retainer plate assembly
bearings also found in Section 2 of this manual.
6. Reinstall the needle case linkage shafts on both sides of the needle case.
7. Reinstall the needle case that was previously removed.
Needle Centering
8. Insure the #4 embroidery head needle is centered in the needle plate hole when
in the proper color index position for any needle.
Note: The #4 embroidery head needle must be centered before the others.
9. Center the same needle position for each of the other heads by adjusting the
linkage shafts at the various clamps.
3 - 36 Head Section
EMC 10/4 Technical Manual Melco Embroidery Systems