Check the V-belts periodically to check for signs of glazing, cracking or fraying. If any of these conditions are present, change both V-belts. In order to take the V-belts off of the roller pulleys, the rollers must be removed from the sander.
Change the V-belt as follows:
1.DISCONNECT THE SANDER FROM POWER AND AIR PRESSURE!
2.Loosen the V-belts and remove them from the motor pulley. Refer to V-Belt Tension for any needed details on Page 29.
3.Open both access doors on the upper part of the machine. At the left-hand access side, remove the platen knob by loosening the setscrew near its dial.
4.Remove the two setscrews that secure the dial plate to the casting and then remove the two large cap screws that secure the top of the casting.
5.Pull the casting off of the roller ends as shown in
Figure 27.
6.At the other side of the machine (the right-hand side from the front), remove the large nut shown in
Figure 28. The roller may turn if not held from the other side. This secures the other end of the front roller shaft to the sander body.
7.Now, move back to the left-hand side of the machine and carefully pull out the front sanding belt roller as shown in Figure 29. The V-belts can now be easily removed.
8.Install the new V-belts in the reverse order of removal. To make this process easier, have a helper hold the V-belts up at the other side of the sander when you re-install the roller. When you retighten the large roller shaft nut, have your helper stand at the other side of the sander to keep the roller from turning.
