ADJUSTMENTS

PART 2: Drum-to-Conveyor Parallelism

For this adjustment, you will align the front drum so the sanding path runs parallel with the conveyor belt feed path. You will then align the rear drum to the front drum so it is parallel with the front drum. See Figure 22.

NOTICE

If the drum-to-conveyor parallelism is out of adjustment, the sandpaper may become loose and load-up over to one side of the drum(s).

To adjust the drum-to-conveyor parallelism, do these steps:

1.At either end and at the surface of the front drum, measure the distance between the drum and the front brace. It should be approximately 12". See Figure 23.

If the difference between the two measurements is less than 18", skip Steps 2 through 4, and go to Step 5.

If the distance is greater than 18", go to

Step 2.

2.Loosen the bearing-block mounting nuts on one end of the front drum. See Figure 24.

NOTICE

DO NOT over-tighten the bearing block mounting nuts. The bearing blocks are machined housings that can warp or crack if the nuts are over-tightened.

3.Slide the drum and bearing block forward or rearward to eliminate any front-drum to front- brace measurement difference. Remember, adjusting one drum-end slightly affects the adjustment at the opposite end.

4.Tighten the nuts, recheck the measurement, and readjust as necessary.

Center-Tracking Conveyor

Right-Tracking Drum

Left-Tracking Drum

Figure 22. Drums to conveyor path not parallel.

12"

Figure 23. Front-drum to front-brace

measurement.

Mounting

Nuts

Figure 24. Front bearing block and nuts.

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Woodstock W1678 instruction manual To adjust the drum-to-conveyor parallelism, do these steps, Step