Model G0857/G0858 (Mfd. Since 07/19)
-41-
5. Loosen cutterhead gib bolts, starting in the
middle, and alternating back and forth until all
gib bolts are loose, but not falling out.
The first time you set or replace a knife,
remove the gib and knife from cutterhead.
Clean gib and clean inside cutterhead slot to
remove all pitch or sawdust. Coat knife and
gib with a metal protectant.
6. Position knife jig over knife. Loosen gib bolts
until knife is completely loose.
7. Jack Screws—Access jack screws through
holes in cutterhead (see
Figure below).
Using a hex wrench, rotate jack screws to
raise or lower knife. When knife is set cor-
rectly, it will barely touch the bottom of the
straightedge or the middle pad of the knife jig.
Snug gib bolts just tight enough to hold knife
in place. Repeat with remaining knives.
Springs—Push knife down with straight-
edge or middle pad of knife-setting jig (see
Figure below). Keep straightedge flat against
outfeed table. If using jig, keep feet pressed
evenly against cutterhead. Tighten gib bolts
just enough to hold knife in place. Repeat
with remaining knives.
Figure 39. Location of spring.
Spring
5. Loosen cutterhead gib bolts, starting in the
middle, and alternating back and forth until all
gib bolts are loose, but not falling out.
The first time you set or replace a knife,
remove gib and knife from cutterhead. Clean
gib and clean inside cutterhead slot to remove
all pitch or sawdust. Coat knife and gib with a
metal protectant.
6. Position knife jig over knife. Loosen gib bolts
until knife is completely loose.
7. Access jack screws through holes in cutter-
head. Using a hex wrench, rotate jack screws
to raise or lower knife. When knife is set cor-
rectly, it will barely touch middle pad of knife
jig or bottom of straightedge in each of the
straightedge positions. Snug gib bolts just
tight enough to hold knife in place. Repeat
with remaining knives.
8. Rotate cutterhead to reveal the first knife
you started with. Lightly snug all gib bolts,
alternating from one side to the other, and
working from the ends to the middle. Repeat
with remaining knives.
9. Tighten each gib bolt in the same alternating
manner as you did in the previous step.
10. Make sure outfeed table is set even with the
new knives at top dead center.
11. Replace cutterhead guard and cabinet rear
access panel.
Figure 40. Gib bolt tightening sequence.
1
4
2
3
5. Loosen cutterhead gib bolts, starting in the
middle, and alternating back and forth until all
gib bolts are loose, but not falling out.
The first time you set or replace a knife,
remove gib and knife from cutterhead. Clean
gib and clean inside cutterhead slot to remove
all pitch or sawdust. Coat knife and gib with a
metal protectant.
6. Position knife jig over knife. Loosen gib bolts
until knife is completely loose.
7. Access jack screws through holes in cutter-
head. Using a hex wrench, rotate jack screws
to raise or lower knife. When knife is set cor-
rectly, it will barely touch middle pad of knife
jig or bottom of straightedge in each of the
straightedge positions. Snug gib bolts just
tight enough to hold knife in place. Repeat
with remaining knives.
8. Rotate cutterhead to reveal the first knife
you started with. Lightly snug all gib bolts,
alternating from one side to the other, and
working from the ends to the middle. Repeat
with remaining knives.
9. Tighten each gib bolt in the same alternating
manner as you did in the previous step.
10. Make sure outfeed table is set even with the
new knives at top dead center.
11. Replace cutterhead guard and cabinet rear
access panel.
Figure 38. Location of jack screw access hole.
Jack
Screw
Summary of Contents for G0857
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