Table of Contents
Advertisement
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE, AND
3. Using blade hardware access hole (see Figure 5.2),
remove the two bolts that hold the blade to the rotor.
The hardware can be reused. Repeat for remaining
blade. The blades have two edges and can be
reversed one time before sharpening.
ROTOR
HOUSING
Figure 5.2, Blade Hardware Access Hole
4. Inspect blades to see if cracks or nicks are visible. If
cracks are present, replace the blades. Replace the
blade if nicks cannot be removed by sharpening.
5.5 SHARPENING THE BLADES
The blades can be ground on a bench grinder or by a
professional.
1. Never sharpen or grind the mounting surfaces of
the blades. This will cause the edge to roll and the
blade will be damaged, resulting in poor chipping
performance.
2. Regrind the angled edge of the chopping blades to
45 degrees (Figure 5.3). Use the blade angle gauge
plate when sharpening the blades to achieve the
proper angle (see Figure 5.4).
Figure 5.3, Chipper Blade Surfaces
WARNING
MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
BLADE HARDWARE
ACCESS HOLE
BOLT
4.5 INCH CHIPPER
Figure 5.4, Blade Angle Gauge Plate
3. Be careful when grinding so that the blade does
not become overheated and change color. This will
remove the heat-treated properties.
4. Use short grinding times and cool with water or some
type of liquid coolant.
5. Remove an equal amount off each blade to maintain
rotor balance.
6. Small imperfections such as nicks and burrs on
the flat side of the blade will not affect the chipping
performance of the machine.
7. For blades that have been repeatedly sharpened,
ensure that the sharpened surface extends past
the chipping slot opening. If it does not extend past
the opening, the blades should be replaced (see
Section 5.3).
5.6 INSTALLING THE BLADES
1. Lock rotor assembly (Section 5.2).
2. Place a blade on the rotor and attach using original
hardware. Torque the bolts to 120 ft-lbs (162 Nm).
Repeat for the remaining blade. Install blade hardware
access plate.
3. Reinstall the chipper discharge cap or optional
discharge tube (Section 2.2).
5.7 SETTING CHIPPER BLADE
CLEARANCE
The chipping blades should clear the chipping anvil,
located directly under the chipper chute, by 1/16" to 1/8".
Removing the chipper chute is NOT required for setting
the chipping blade clearance. However, removing the
chipper chute can provide better access for measuring
the chipping blade clearance.
To adjust the blade clearance, proceed as follows:
1. Rotate the rotor until a chipping blade is even with the
chipping anvil.
SERVICE & MAINTENANCE
13
Advertisement
Table of Contents
