Vermeer BC1000XL, Maintenance Manual

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BC1000XL Brush Chipper Maintenance 10 Service Hours 25-13
Knife Inspection
• Cracks — Thoroughly clean the knives and inspect both sides of each knife for
cracks. If any are found, discard the knife and install a new one.
Cracks (1) that start at the mounting hole and progress outward result from the
mounting bolts being improperly torqued.
NOTE: Knife sizes and number of mounting holes may vary between machine
models.
If cracked knives are reused, the cracks will extend across the knife and the knife
can separate from the cutter drum.
• Distortion — Check the mounting side of the knife for distortion. Bolting a
distorted knife to the cutter drum will add stresses in the knife and possibly
cause knife cracking and failure.
Step 1: Place a straightedge (2) on the mounting side of the knife (3) and parallel
to the mounting holes as shown.
Step 2: Move straightedge slowly across the knife surface, and monitor for any
light that shows between the knife and straightedge. If any light appears
between the knife surface and the straightedge, this indicates that the
knife is distorted, and the knife must be replaced.
Step 3: Turn straightedge perpendicular to mounting holes and repeat Step 2.
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