Grizzly G0458 - Manual (Page 37)

Model G0458 (Mfg. Since 5/11)
-35-
3. raise the table until the gauge blocks just
touch the drum.
n ote: A good way to know when they are
touching is to rock the drum back and forth
while raising the table until you hear or feel
contact with the gauge blocks.
4. lower the table one full crank of the handwheel
(taking handwheel free-play into consider-
ation; or in other words, wait until the chain
starts moving before starting to count the
handwheel rotation).
5. Starting at one end, find the largest size feeler
gauge that can pass between the drum and
your gauge block. (the feeler gauge should
slide with moderate resistance, without forc-
ing the drum to roll.)
6. repeat step 5 at the other end of the drum.
—if the difference between the two sizes is
0.002" or less, then no adjustment is nec-
essary.
— if the difference between the two sizes is
more than 0.002", then one end must be
adjusted to within 0.002" from the other.
Continue to the next step.
7. loosen the table cap screws and adjust the
height of the table by rotating the adjustment
knob shown in
figure 47.
figure 47. table height adjustment knob.
8. tighten the table cap screws and repeat
steps 5 & 6.
pressure plate
adjustments
table Cap
Screws
table height
Adjustment
Knob
tools needed: Qty
Wrench 8mm ......................................................1
hex Wrench 4mm ...............................................1
gauge Blocks (see
page 34) .............................2
Feeler gauge Set ...............................................1
When properly positioned, the pressure plates
should be approximately 0.004" lower than the
drum.
Adjusting the pressure plates is a fine balance
between too much pressure and not enough. too
much pressure can cause problems like snipe
or overloading the motor, not enough pressure
may allow the workpiece to kick out of the sander
towards the operator.
the pressure plates have been set correctly at the
factory. do not adjust the pressure plates unless
absolutely necessary.
to check pressure plate adjustment:
1. disconnect power to the sander!
2. place the gauge blocks on the feed belt as
shown in figure 46.
3. raise the table until the gauge blocks just
touch the rear pressure plate.
4. Find the largest size feeler gauge that can
pass between the drum and your gauge block.
(the feeler gauge should slide with moderate
resistance, without forcing the drum to roll.)
—if the gap is 0.004" (0.1mm) or less, then
no adjustment of the rear pressure plate is
necessary.
— if the gap is more than 0.004" (0.1mm),
then the rear pressure plate must be
adjusted.