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-14- G1066/G1066Z/G1079 Drum Sander
3. Start with the front sanding drum. Lower the
table so the block will slide easily under the
pressure bars. Slide the block over to one
side of the table, with the front edge lined up
to the front of the table. (It is important to line
up the block carefully to ensure that the
same part of the 2x4 is used to set the drum
heights.) Raise the table up so the board
barely touches the front pressure roller.
4. Raise the table one full turn of the hand-
wheel. Adjust the height of that side of the
front sanding drum so it just touches the
board and is able to rock back and forth with
moderate resistance.
Figure 9. Model G1066Z rear drum
adjustment control.
Figure 10. Dimensions of gauge block.
3. Repeat the measurements with the rear
drum and brace. If the measurements are
not within
1
⁄8", the drums can be moved by
loosening the lock nuts on the bearing blocks
and moving one end of the drum forward or
backward as necessary in the slotted holes.
If the drums are not perpendicular to feed
direction, the sandpaper will creep toward
one end of the drum. After you have adjust-
ed the drums, do not forget to tighten the
lock nuts and recheck the alignment.
To adjust the drums parallel to the conveyor
belt:
1. Disconnect the sander from the power
source!
2. For this step, you will need a 24" long block
of wood. A quality 2x4 will work fine (See
Figure 10).
Micro-Adjustment Knob
Micro-Adjust Lock Knob
3. Tighten the lock nuts and recheck the align-
ment using the same hardwood block.
Tightening the lock nuts will pull the drum
downward slightly. Be sure to adjust to com-
pensate for this movement. Do not over
tighten the lock nuts. The bearing blocks
can break if over tightened.
4. For Models G1066/G1079 repeat steps 1-3
for the other drum. Tighten the lock nuts.
Model G1066Z has micro-adjustment knobs
on the sides of the machine for rear drum
adjustments. See Figure 9. Both drums
should now be properly adjusted. Do not
change the table height until the lock nuts
are tight.
Use care when tightening lock nuts. While
they are made of durable cast metal, the
bearing blocks are susceptible to breakage if
the metal is fatigued by excess tension
caused by overtightening.
To adjust the drums perpendicular to the feed
direction:
1. Disconnect the sander from the power
source!
2. First measure the distance between the out-
side of the front drum and the inside of the
front brace. The distances should be within
1
⁄8" of each other at each end of the drum.