Specifications

6. Tighten the socket head cap screws securely and remove the fixture.
7. Push the retainer plate assembly left and right as far as possible without the
bearings coming off the end of the embroidery head v-rail. While moving the
retainer plate assembly try to hold the bearings from rotating (one at a time)
with your fingers. With a medium amount of pressure, you should be able to
stop the bearing rotation.
8. If required, loosen the socket head cap screws and repeat this process until the
bearings are adjusted as described in step 7.
Replacing Reciprocator / Needle Bar Guide Shaft
1. Remove the needle case as described previously.
2. Loosen the set screw from the left side of the head that secures the needle bar
guide shaft (see Figure 3-31).
3. Remove the retaining clip from the needle bar guide shaft (see Figure 3-27).
4. Remove the felt from the hole in the top of the arm casting, then remove the
needle bar guide shaft by sliding it up through the hole (see Figure 3-32).
Note: If you are only replacing the needle bar guide shaft, proceed to step 8.
5. Remove the reciprocator from the connecting rod by pulling it straight out of the
head (see Figure 3-31). Discard the reciprocator.
6. On the new reciprocator place a drop of machine oil on the reciprocator
connecting stud (located on the lower back side of the reciprocator).
retainer plate
assembly
(cross roller
installed and
centered)
install v-rail
adjustment
fixture here
embroidery
head V-rail
retainer plate
bearing (right
side)
socket head
cap screws
v-rail
adjustment
fixture
retainer plate
bearing (left
side)
needle case
V-rail
Figure 3 - 30
3 - 34 Needle Case
EMT 10/4T Technical Manual Melco Embroidery Systems