FIGURE 1-Installing the new thrust collar and existing washer on the X- and Y-axes
FIGURE 2-Makng sure the leadscrew is centered
7.
Install a new handwheel and encoder ring on the X- and Y-axes. The encoder ring has
been factory installed on the handwheel for easier assembly. Note that the X and Y
handwheels are similar except on the X-axis, the numbers on the handwheel face away
from the handwheel. On the Y-axis they face toward the handwheel. Make sure the
shoulder at the end of the leadscrew thread is seated against the thrust collar and the
handwheel is pushed in tightly to remove end play before tightening the set screw. On the
X-axis, push the table AWAY from the handwheel while pushing the handwheel onto the
leadscrew shaft. On the Y-axis, hold the table (not the base) with one hand and push the
handwheel onto the shaft with the other. Rotate the handwheel so that the set screw
tightens on a new part of the shaft. If you don't, it will tend to pick up it's old indentation
making it difficult to tighten it in a new position.
FIGURE 3-Detail of the encoder housing showing direction of installation
See Figure 3 for orientation of the encoder housing. The thicker shoulder inside the
encoder should be facing toward the thrust collar. It is easier to tighten the screws if you
install the units upside down with the screws coming down from the top. Place the two
halves of the shell over the thrust collar and over the encoder ring and install the four #2
