Maintenance
Shredding Hammer Rotation and Replacement
The cutting edges of the shredding hammers may eventually
wear out requiring rotation of the hammer or replacement if
all cutting edges have been dulled. Triangular hammers can be
rotated twice after the first edge dulls, then flipped over once and
rotated again for a total of 6 edges. J-hammers can be flipped over
once for a total of two cutting edges.
To rotate the shredding hammers:
1. Turn the engine off and wait for all moving parts to stop.
2. Disconnect the spark plug wire.
3. Remove (4) M10 Bolts that attach Hopper Assy. Lift Hopper
Assembly from Chipper/Shredder and set aside (see Figure 11).
4. Tilt Chipper/Shredder forward and rest on drawbar.
5. Remove (11) M8 Nylock Nuts that attach Shredder Housing to
Chipper Shredder. Remove Wheel/Bracket Assembly, Shredder
Housing and Shredder Interface Plate (see Figure 9).
6. Rotate Flywheel to align Blade Attachment Bolts with access
holes. Remove (2) M8 Bolts, Flat Washers and Split Lock
Washers for each of the Chipper Blades. Reach thru the Chipper
Feed Tube to remove the Chipper Blade.
7. Note the assembly sequence of the hardware used to secure the
hammers. Using a 17mm wrench or socket remove the hex head
bolts and related hardware (see Figure 10).
8. Inspect the hammers, spacers, and hardware. If the spacer shows
signs of wear, replace it. Inspect and flip, or replace the hammers.
9. Reassemble the hammers, spacers, washers, and cap screws.
Torque the hex head bolts to 30-35 ft. lbs. The J-hammers may
be used facing in or out.
8. Repeat for all the hammers.
Figure 9
18
HEX HEAD
BOLT
WASHER
LONG
SPACER
SHORT
SPACER
J-HAMMER
TRIANGULAR
HAMMER
Figure 10
