QubicaAMF XLi Pinspotter Motor and Gearbox Manual
400-088-038 20 Revision F
2.3.3 Replacing the Encoder Assembly
Tools Required
9/64-inch Hex Wrench
5/64-inch Hex Wrench
Flat Blade Screwdriver
1. Run the sweep to the 1
st
Guard position.
2. Lock out and tag out the pinspotter in accordance with your bowling center’s established procedures.
3. Disconnect the motor’s power cable.
4. Disconnect the brake cable.
5. Disconnect the electrical connector for the encoder sensor.
6. Remove the four screws that secure the motor’s electrical receptacle to the encoder enclosure.
7. Remove the encoder enclosure and brake assembly from the top of the motor by removing the four
Phillips head screws that hold the encoder enclosure in place (see drawing on page 15 for parts
identification).
8. Remove the encoder sensor by removing the two Phillips head screws that hold it in place.
9. If the encoder disk or spacer needs to be replaced, perform the following steps.
a. Remove the hexagonal hub, brake hub, and key. This can be done by loosening the two set screws
on each of the hubs. Then, using a flat blade screwdriver, pry between the top and bottom brake
hub to slide the top one off the shaft. Remove the remaining brake hub and key. You might need to
use a bearing puller on stubborn hubs.
b. Remove the spacer and encoder disk. Replace these items with the new ones.
c. Replace the hubs making sure that the keyways line up with the keyway on the shaft. Install a new
key by pushing it through the gap created by the lined up keyways. In the event that the fit is too
snug to replace the key by hand, a slight tap might be required to get it to insert completely.
d. Tighten the setscrews on the hubs.
10. Install the encoder sensor.
11. Reinstall the encoder enclosure and brake assembly aligning the splined hub with the spline in the
brake, and then fasten the encoder enclosure in place with the four Phillips head screws.
12. Secure the motor’s electrical receptacle to the encoder enclosure using the four Phillips screws that
were removed earlier.
13. Reconnect the brake and encoder cables.
14. Reconnect the motor’s power cable.
15. Restore power to the pinspotter.
16. Run the sweep to the Home position.
17. Cycle the pinspotter and observe for correct operation.
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