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W1772/W1773 37" Drum Sander
SERVICE
Adjusting Drum Height & Drum-to-Conveyor
Parallelism
The rear drum can be adjusted parallel to the conveyor
belt in fine increments at the pillow bearings with the
micro-adjust knobs, or the front drum can be adjusted
parallel to the conveyor with the set screws on the pillow
bearings. If, after performing the following procedure,
you cannot adjust the drums parallel to the conveyor belt,
it is possible that the conveyor table needs further adjust-
ment. In that case, follow instructions on Page 43
for
adjusting the table parallel to the drums at the table lift
screws
.
Keep in mind that having the drums parallel to the top of
the conveyor belt (see Figure 54
) is critical to the sand-
ing operation. Take care to adjust the drums parallel to
the conveyor surface within 0.002" from one side to the
other
.
To adjust the rear drum height and
adjust the drums
parallel to the conveyor belt, do these steps:
1. DISCONNECT POWER TO THE SANDER!
2. Open the top and pulley covers, remove the V-belts,
and remove sandpaper from the drums for best
results.
3. Place the gauge blocks (refer Page 32) on the con-
veyor table and position them under the drums, as
shown in
Figure 55.
4. Raise the table up until the gauge blocks are approxi-
mately 0.010" below the rear drum, checking with a
feeler gauge. This setting will be used to determine
rear drum-conveyor bed parallelism
. Note: Each full
turn of the table height handwheel raises the conveyor
table approximately
0.020".
Figure 54. Drum parallel to conveyor belt.
Figure 55. Gauge blocks under drum
rollers.
Continued on next page