Removing And Replacing The Chipper Knife - Generac GC3000C Manuel De L'utilisateur

Removing and Replacing the Chipper
Knife
WARNING
Accidental start-up. Before servicing or detangling, shut
down unit, allow to cool, remove keys, and disconnect spark
plug wire(s). Failure to do so could result in death, serious
injury, or equipment damage.
The chipper knife can remain acceptably sharp for over
40 hours, depending on the material being chipped.
Replace or sharpen the chipper knife when there is a
noticeable decrease in self-feeding performance. See
Maintaining Shredder Hammers
1. See Figure 4-4. Use a 1/2" wrench to remove the
nine locknuts (A) securing hammermill housing (B)
and shredder hopper assembly (C) to the unit.
C
B
A
Figure 4-4. Replacing Chipper Knife (1 of 4)
2. Lift the assembly off the machine.
3. See Figure 4-5. Use a 1/2" wrench to remove the
three locknuts (D) securing chipper chute (E) and
lift chipper chute off the machine.
E
Figure 4-5. Replacing Chipper Knife (2 of 4)
Owner's Manual for Chipper/Shredder
(000415)
for more information.
A
010551
D
010561
4. See Figure 4-6. Rotate flywheel (F) until locknut
(G) is visible through locknut access hole (H).
H
Figure 4-6. Replacing Chipper Knife (3 of 4)
5. See Figure 4-7. Clean out heads of Allen screws
(I) with an awl or sharp tool.
Figure 4-7. Replacing Chipper Knife (4 of 4)
6. See Figure 4-6 and
Allen wrench into screw (I) and a 1/2" deep socket
on locknut (G) through locknut access hole (H) and
remove the locknut and screw.
7. Rotate the hammermill assembly until the outer
locknut is visible through the locknut access cutout.
8. Repeat Steps 6 and 7 for the remaining screw and
locknut.
9. Remove the dull or damaged knife.
10. Clean knife mounting area and file any metal burrs
that would prevent the replacement knife from
mounting flush to the flywheel.
11. Install a new or sharpened knife and finger tighten
the Allen screws and locknuts.
NOTE: New Allen screws and locknuts are provided with
each new chipper knife.
12. Using a 3/16" Allen wrench on the screw and a 1/2"
deep socket on the locknut, tighten the hardware to
secure the chipper knife.
13. Verify both screws are tight.
14. Reinstall chipper hopper and hammer mill housing/
shredder hopper assembly.
Maintenance
G
F
010553
I
010544
Figure 4-7. Insert a 3/16"
17