Powermatic 31A operating instructions Work Stop, Belt Arm Positioning

A zero-degree stop screw (D, Figure 17) is located behind the disc. The block should be set for quick placement of the table to the zero position (90 degree table). The block must be swung out of position for the table to be tilted downward. If major adjustment of the zero- degree stop is necessary, loosen the socket head cap screws (E) and raise or lower the bracket. For fine adjustment, loosen the hex nut

(F)and turn the stop screw (D) in or out as needed. Re-tighten hex nut (F).

Periodically check zero position on the table by using a combination square. The angle between the table and disk should be 90 degrees when the trunnion pointer is at zero.

Work Stop

Your sander is equipped with a work stop for use with the belt arm in the horizontal position (see Figure 25). When installed, the work stop will prevent a work piece from being thrown from the belt. If removed for through-sanding, the work stop should be immediately reinstalled after the through-sanding operation (unless the fence attachment is used in its place for 45- degree or vertical positions of the arm). Use a 10mm hex wrench to remove or install the work stop.

Belt Arm Positioning

Your sander is equipped with an index pin arrangement to lock the belt arm in 0-degree, 45-degree, and 90-degree positions. To position the belt arm:

1.Loosen the locking handle shown in Figure 18.

2.Pull out on the index pin (Figure 19), and swing the belt arm into the desired position. Then release the index pin.

3.Check that the index pin has gone into position by attempting to move belt arm back and forth.

4.Re-tighten locking handle (Figure 18).

When positioning the arm at any non-standard angle, make sure the locking handle is tightened securely.

NOTE: If the locking handle conflicts with the motion of the belt arm, pull up on the handle and rotate it out of the way, then release it, making sure it re-seats itself properly.

Figure 18

Figure 19

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