Challenge CHAMPION 305 TC, Instructions And Parts Manual

Page: 21 / 110

8.0 Knife Installation/Changing
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2. Check to make sure the paper deflector is locked down (Figure 10, page 19). Also check that
the knife adjusting screws have been backed out, (Figure 11, page 19).
3. Place the new knife scabbard on the cutter table.
4. Remove the knife retainer screws.
5. Place your fingers along the top edge of the scabbard and your thumbs in the holes in the
knife.
6. Pull the knife up in its scabbard until the bevel is exposed.
7. Place the lifter on top of the knife and insert the knife lifter handles into the corresponding
knife bolt holes (use the lowest holes) and thread the handles into the knife until they touch
the scabbard. Then back the handles off 1/2 turn.
8. Grasp the knife lifter handles, lift the blade, and insert the blade into the knife bar slot. Slowly
guide the blade into the cutter right end first, then bring the left end in parallel to the knife bar.
Raise the knife into the knife bar slot as high as it will go. Tighten the handles firmly to hold
the knife. An installed lifter is shown in Figure 14 below.
Figure 14
NOTE: If the blade will not go in, either the handles are screwed into the blade too far or the
blade is not centered over the table, and the end of the blade is hitting the end stop in the
knife bar.
9. Insert the rest of the knife bolts and washers, snug tighten them, but don’t tighten completely.
Be sure all bolts have washers. The correct washers are important for proper bolt
clearances!
10. Remove the knife lifter and insert the remaining two bolts and washers and snug tighten.
11. Place paper across the table to cover the cutting stick.
12. Restore power to the machine and turn it ON. Follow the prompts on the screen to preset the
backgauge. Then choose “MAINTENANCE” and then “KNIFE CHANGE”. Select “Knife
Adjust Mode” then press and hold both cut buttons until the knife and clamp reach the table.
Now release the buttons (the knife and clamp should stay down).
13. DISCONNECT THE POWER AND LOCK IT OUT, (See Power Lockout Procedure on pg. 5).
14. Turn the knife adjusters down (Figure 11, page 19) a little at a time, until the blade cuts
through the paper evenly over the entire length of the stick. Be sure the blade is parallel to