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BJ5-620 Maintenance 51 of 73
1. Remove old knives (see “Dismounting the bed knives”).
2. Insert sharp knife or turn old knife.
3. Put in the knife adjusting bolts and adjust them roughly
4. Put in the knife mounting bolts and tighten lightly first
5. Adjust the gap between cutters and bed knife to 0.8-1.0 mm using a
calibre gauge.
6. Tighten the knife mounting bolts using a torque wrench.
NOTE: The required torque for all knife mounting bolts is 355 Nm (see
the table under “Replacing and checking the cutting knife mountings”).
7. Turn the rotor by hand.
8. Check whether the cutting gap is correct and make sure the cutters
and bed knives do not collide as the rotor turns.
NOTE: Recommended knife gap: 0.8 mm – 1 mm
9. Fix the knife cover plates.
1
2
6
5
3
4
7
(1) Bed knife
(2) Knife mounting
screws
(3) Knife holder
(4) Cover plates
(5) Knife adjusting
screw for pushing
(6) Knife adjusting
screw for pulling
(7) Cover plate
mounting screws