Bandit 20XP - Page 62

Bandit
58
Copyright 12/17
MODEL 20XP
CHIPPER DRUM
“CLAMP-IN” KNIFE HARDWARE
Replace the bolts, nuts, knives, clamps and holder when they need it. DON’T stretch it! You will pay for
it either by damage to machine or possible damage to a person. Knife pocket bolts should be replaced after
(5) uses.
Using a piece of wood and a screwdriver install the sharp babbitted knife and hold it rmly into position.
The piece of wood will hold the knife back into pocket and the screwdriver must be used to raise the knife to
the outer edge of pocket.
To retighten the knife clamp; rst tighten center knife bolt and then tighten the outside bolts. Knife bolts
must be torqued tight at 210 ft.-lbs. (285 Nm).
Always check with a .002 to .005 feeler gauge to make sure the knife, counter knife and clamps are
seated tight at all seams when done. There should not be any gap between the knife pocket pinch points in
hardware.
To remove the dull knife, hold the knife in position carefully with leather gloves. Then loosen the bolts
with a 6-point socket. They only need to be loosened enough to let knife slide out. Clean all debris out of the
knife pocket and hardware.
KNIFE BABBITTING PROCEDURES
1. Insert the knives into the knife gauge and slide the spacers up tight to avoid overspill of the babbitt material.
2. Heat the knife and knife gauge with a torch (see Figure 1). This will prevent blow back which could occur
if there were any moisture left in the xture.
3. Pour babbitt slowly from the ladle on to knife gauge between steps gradually lling the cavity (see Figure 2).
4. Once the babbitt has cooled remove the knife (see Figure 3) and place on a stand so the access babbitt
can be led away (see Figure 4). Do not allow the babbitt to extend over the edges of the knife or serious
damage will result to the components in the knife pocket.
DANGER
!
MAINTENANCE
PROPER USE OF BABBITT ON CHIPPER KNIVES
FIGURE 1 FIGURE 2
FIGURE 3 FIGURE 4
BABBITT
KNIFE HOLDER
KNIFE
TOP CLAMP
IMPROPER USE OF BABBITT ON CHIPPER KNIVES
BABBITT
KNIFE HOLDER
KNIFE MUST
SIT FLAT
KNIFE
TOP CLAMP
CLAMP MUST
SIT FLAT