-29-
Model W1740 (For Machines Mfg. Since 1/13)
SE
RV
IC
E
The drums can be adjusted in fine increments at the pil-
low block bearings and in larger increments by using the
table lift screws.
While adjusting the drum, keep in mind that having the
drum parallel to the conveyor belt (see
Figure.26
) is
critical to the sanding operation. Care should be taken to
make the tolerances as close as possible (within 0.002"
from one side to the other) when adjusting the drum
height.
To.adjust.the.sanding.drum.parallel.with.the.conveyor.
belt,.do.these.steps:..
1..
DISCONNECT SANDER FROM POWER!
2.
Open the top cover.
3.
Loosen the lock nuts (see
Figure.27
) on the drum
pillow block bearing housing.
4.
Place the gauge boards on the conveyor table and
position them under the pressure rollers (see
Figure.
38
).
5.
Raise the table until the gauge boards just touch the
bottom of the sanding drum.
N
ote:
A good way to know when they are touching is
to rock the sanding drum back and forth while rais-
ing the table until you hear or feel contact with the
gauge boards.
6.
Lower the table one full turn of the handcrank han-
dle. Wait until the chain starts moving before start-
ing to count the handcrank handle rotation.
7.
Starting at one end, place a 0.002" feeler gauge
between the sanding drum and the gauge board.
(The feeler gauge should slide with moderate resis-
tance, without forcing the drum to roll.)
8.
Repeat
Step.7
at the other end of the drum.
— If the difference between the two sides is 0.002"
or less, skip to the subsection that covers how to
adjust the drum-to-conveyor tracking on
Page.31
.
— If the difference between the two sides is more
than 0.002", then one side must be adjusted to
within 0.002" of the other (with the ultimate goal
of making them dead even). Continue to the next
step.
Drum-to-Table.Parallelism
Figure.28.
Gauge boards in position.
Figure.27.
Pillow bearing housing.
Locknut
Figure.26.
Drum not parallel with belt.
Set Screw
