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W1772/W1773 37" Drum Sander
SERVICE
Scale Pointer Calibration
For the scale pointer to be accurate, it must be calibrat-
ed.
We recommend calibrating your scale pointer any time
you adjust the drum heights or table lift screws.
To calibrate the scale pointer, do these steps
:
1. Sand a workpiece with the drum sander and measure
the thickness of the sanded workpiece.
2. Loosen the screw that secures the scale pointer and
adjust it to the thickness of the workpiece.
Table Lift Scews
The table lift screws are connected by a chain and driven
by the table elevation handwheel. When the chain is
removed from a sprocket on one of the lift screws, that
lift screw can adjust that portion of the table up/down
independently to assist in setting the table parallel to the
drums.
Adjusting the table lift screws will only be necessary if
you need to adjust the drum heights more than allowed
at the pillow bearing adjustments, or if you have removed
the table or chain during a service procedure and you
need to reset the drums parallel to the table.
Figure 61. Scale pointer screw.
Figure 62. Location to adjust dust scoop.
Dust Scoops
The dust scoops and metal scoop plates are correctly
positioned on the top cover at the factory, however these
may loosen and move during shipping. Some trial and
error will be needed to adjust the dust scoops so they do
not contact the sanding drums.
To adjust a dust scoop, do these steps:
1. DISCONNECT POWER TO THE SANDER!
2. Remove the handwheel and open the pulley cover.
3. Loosen the button head cap screws and acorn
nuts securing a metal scoop plate to the top cover
(Figure 62), move the scoop up a little, tighten the
cap screws and nuts, close the top cover, and rotate
the V-belt to see if the drum srapes the scoop.
4. Adjust each scoop in this manner until the sanding
drums do not scrape the scoops, then close the pul
-
ley cover and reinstall the handwheel.
Button Head
Cap Screw
Dust Scoops
Metal
Scoop
Plate