153 INCH CHIPPER/SHREDDER
SERVICE & MAINTENANCE
WARNING
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE,
AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
See Figure 5.2 for illustration.
1. Clean away any material that may be between the
blade and mounting surface on the rotor.
2. Place a blade (6) on the rotor and attach with two
5/16-18 x 5/8" bolts (5). Torque to 25 ft-lb. Repeat for
the second blade.
3. Reinstall the shredder screen (4) in the machine with
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4. Lower the discharge door/shield (1) into the normal
operating position.
5. Remove rotor lock.
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
5.5 SHARPENING THE BLADES 5.6 INSTALLING THE BLADES
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properly and completely installed into upper slot of the
housing. Failing to do so may cause knives to make
contact with discharge screen during operation.
NOTE
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.
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rotor balance.
6. Small imperfections such as nicks and burrs on
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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).
Figure 5.4, Blade Angle Gauge Plate
45 DEGREES 30 DEGREES
1/2"
1/4"
1
2
3
4
5
6
Figure 5.2, Blade Removal and Installation
*Model Shown SC-2013
ENGLISH
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