Knife Change - Challenge CHAMPION 370 XT Operator's Manual

10.1.1 Knife Change

The knife changing equipment shown in Figure 17 is included in the cutter tool kit. The following
instructions show how to remove and install a new or re-sharpened knife. Read through these
instructions AT LEAST ONCE before attempting to actually change or install any blades.
10.1.1.1 Knife Removal
1. Clear the cutter table. Place chipboard directly under the knife to prevent nicking if the blade
hits the table.
2. Lower the knife bar. See section 8.12.3.4 Knife Adjust on page 31 for directions on how to
lower the knife bar.
3. DISCONNECT THE POWER AND LOCK IT OUT! (See Power Lockout procedure, page 5.)
4. Back off the three (3) knife adjusting screws on the top of the knife bar, (Figure 16 on page
40), as far as they will go (counterclockwise). A new knife will cut deeper than a knife that
has been ground several times. If the adjusting screws are not backed off, damage will result
to the new knife, paper deflector and/or the cutting stick.
5. Remove the right-most knife bolt. This bolt will not be accessible after the knife bar is raised.
6. Unlock and reconnect the power then raise the knife bar.
7. DISCONNECT THE POWER AND LOCK IT OUT! (See Power Lockout procedure, page 5.)
8. Remove the bolts in the two slotted holes of the knife bar and replace them with the knife
lifter assembly. Tighten the lifters enough to hold the blade in place. Remove the remaining
bolts (Figure 18 on page 42).
Figure 17 – Knife Changing Equipment
10.0 Routine Maintenance/Adjustments
41