For Machines Mfg. Since 8/09 | O P E R A T I O N | Model SB1023 |
7.Remove the grinding wheel, as shown in Figure 17.
Figure 17. Removing wheel.
8.Wipe the grinding wheel seat shown in Figure 18 so no paper is stuck to the seat. The seat must be clean and free of debris.
Note: Wiping the threads, grinding wheel seat, and hub with a
Grinding Wheel
Seat
Figure 18. Wheel mounting hub.
9.Inspect the paper washers for missing pieces on both sides of the grinding wheel (Figure 19). The paper washers are cushions between the spacer washer and the grinding wheel seat. Without the washers, cracks can spawn from the center of the wheel when the spanner nut is tightened. Over time, these cracks can radiate outward and the wheel may explode possibly causing injury.
Paper
Washer
Figure 19. Important paper washer.
Note: If you need to replace or install new paper washers, replacements can be cut out of any thick construction paper or card stock. Regular notebook paper or paper from a copy machine is not acceptable, as it is too thin to provide the required cushion. Don't forget to record the wheel type and RPM rating on the new paper washer.
10.Ring test the grinding wheel, even if it is new, then if the wheel is free of cracks, slide the wheel onto the hub. Refer to Ring Test on Page 25 for details.
11.Complete the preceding steps in the reverse order to install the grinding wheel.
•After the grinding wheel is installed, you will have to use the dressing tool to true- up the wheel. Refer to Wheel Dressing on Page 25 for details.
•When the wheel runs true, the hub and grinding wheel must then be removed and balanced as an assembly since grinding wheels can have different densities at various points of the wheel. The wheel will only deliver superior results if it is properly trued- up and balanced. Refer to Removing & Installing Wheel & Hub on Page 22 to remove the assembly; and refer to Wheel Balancing on Page 26 for specific procedures on balancing.