Hansa C16c O&M Manual – OM-020 Revision B 24/06/2019
© Hansa Chippers 2019
13
Reinstall the knives
Clean all mounting surfaces and remount
the knives in the reverse procedure.
Note
: Be sure to replace the knives the
correct way around (as shown in the
diagram). Only tighten the clamping bolts
enough to hold the knives in place during
adjustment. Do not tighten them fully until
step 7.
Adjust the knives initially using the
adjustment bolts to protrude the edge of
the knife just past the edge of the knife
holding block.
After sharpening, the width of the knives
will have been reduced, therefore the gap
between the knives and anvil may require
adjustment. This gap is tapered out slightly
to allow for a small amount of movement in
the cutting rotor as it bites into the wood.
If there is not enough clearance, the knife
edge may touch the anvil through
deflection when cutting heavy branches
and damage the sharp edge. Too much
clearance will allow small twigs and fibrous
materials to be dragged through without
being cut.
Adjust the knife in or out using the two
adjustment bolts to achieve the correct
clearance between the knife and anvil. The
clearance between the knife and anvil
should be approximately 1 mm on the
inside closest to the bearing and 3 mm on
the outside closest to the edge of the
cutting rotor (refer to diagram for more
detail).
After the correct clearance is set, fully
tighten the clamping bolts
using a torque
wrench to 35 N.m. and tighten the locking
nuts on the adjustment bolts.
5
6
Knife holding
block
Knife
Side view: Rotor disc
Knife
Adjustment bolts
Locking nuts
Rotor disc
Knife holding block
Clamping bolts
Clamping plate
7
Anvil
Cutting
rotor
Knife
1 mm
clearance
3 mm
clearance
Bearing
Top view: Knife and anvil set-up
Edge of
cutting
rotor
