Grizzly G9961 - Manual (Page 31)

Extreme Duty Planers -29-
Feed Rollers &
Pressure Bar
The feed rollers are factory set at .040" below the
knife edge at bottom dead center. Adjusting them
can be a difficult process and is not recommend-
ed when the machine is new, unless the adjust-
ments are necessary for a specific application. If
you are not getting satisfactory performance from
the feed rollers, adjustments are necessary.
Although not required, we recommend using a
Rotacator
® for the following setup. Check with the
current Grizzly catalog for details.
To set the feed rollers and pressure bar with
hardwood blocks:
1. Make sure the machine is disconnected
from power and the knives have been
adjusted properly!
2. Obtain a milled piece of hardwood that is
within .002" from one side to another. Rip
this piece down the middle. (Two separate
boards may also be used if they are within
.002" of each other in thickness.)
3. Lower the table rollers below the surface of
the table and lock the cutterhead in place.
4. Place the boards on each side of the table
as shown in Figure 15, so each board spans
from the front of the table to the back.
Figure 15. Board position on table.
Hardwood Blocks
Figure 16. Left side roller controls.
5. Open the cover. Remove the nut and spring
on the tension stud. Rotate the pressure bar
up so it covers the cutterhead.
6. Open the left cabinet door. Loosen the
check nuts shown in Figure 16, and turn
the adjustment bolts to raise each block up
approximately
1 ⁄
2
" (enough to be above the
horizontal plane of bottom dead center of the
cutterhead knife/insert).
Figure 17. Right side roller controls.
7. Open the right cabinet door. Loosen the
check nuts shown in Figure 17, and turn the
adjustment bolt and setscrew to raise each
block the same amount as those from the
previous step.
Roller Blocks
Check Nuts
Adjustment Bolts
Roller Blocks
Check Nuts
Adjustment Bolt Setscrew