Grizzly POLAR BEAR G0453P - Manual (Page 6)

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Model g0453p (Mfg. 5/10+)
6. insert the hex wrench into the jack screws
through the access holes in the cutterhead
(see
figure 4). rotate the jack screws to
raise or lower the knife until it barely touches
the center pad of the knife gauge with all legs
of the gauge still firmly on the cutterhead,
then snug the gib bolts enough to hold the
knife in place.
figure 4. Jack screw access hole in the
cutterhead.
Jack screw
Access hole
7. slightly tighten the gib bolts, starting at the
middle and working your way to the ends
by alternating left and right, as illustrated in
figure 5.
8. repeat step 7.
9. repeat step 7, but final tighten the gib
bolts.
10. repeat steps 5–9 for the rest of the knives.
11. re-install the V-belt cover, top cover, and
dust hood.
1 2 3 4 5
figure 5. gib bolt tightening sequence.
Knife
figure 2. Cutterhead components.
5. if you have not already done so, loosen the
cutterhead gib bolts (see figure 2) until the
knife is completely loose, then position the
knife gauge over the knife so that the knife
edge is directly under the center pad, as
shown in
figure 3.
figure 3. Knife gauge correctly positioned over
the knife.
Center
pad
Knife
gauge
3. put on heavy leather gloves to protect your
fingers and hands.
4. rotate the V-belt to give you good access to
one of the knives shown in figure 2.