DR 11.5 Chipper Shredder, Safety & Operating Instructions Manual

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20
DR
®
11.5 CHIPPER SHREDDER
Replacing the Chipper Knife
The DR 11.5 CHIPPER SHREDDER is shipped with a sharp Chipper Knife and
depending upon material being chipped we've found it can remain acceptably
sharp for 40 plus hours. When you notice diminished feeding, it is time to
replace the knife. You may also choose to have the knife sharpened instead as
described on the next page.
Tools and Supplies needed:

1/2" Wrench

3/16" Allen Wrench

Awl

Gloves
1. Remove the top Screen Bolt and Locknut using two 1/2" Wrenches ( Figure
20 ).
2. Rotate the Screen down to gain access to the cutting chamber ( Figure 21 ).
3. Loosen the Locknuts on the Access Plate and slide it to the side and remove
(
Figure 22 ).
4. Rotate the Flywheel until the Knife is centered in the opening ( Figure 23 ).
5. Clean out the heads of the Allen Screws with an awl or sharp tool.
6. Insert a 3/16” Allen wrench into the head of the screws and a 1/2" Wrench
on the Locknuts to remove the three Locknuts and Screws.
7. Carefully remove the dull or damaged Knife and visually inspect the Knife
mounting area and be sure they are clean. Metal burrs may need filing so
that the replacement Knife will be able to mount flush against the Flywheel.
8. 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.
9. Using a 3/16" Allen Wrench on the Screw and a 1/2" Wrench on the
Locknut, tighten the hardware to secure the Chipper Knife.
10. Double-check all three Screws for tightness one more time.
11. Reinstall the Access Plate.
12. Rotate the Screen back into the operating position and reinstall the
hardware.
Note: Make sure the bolt goes through the screen rather than just
behind it .
Knife
Figure 23
Screws
(Locknuts
on Inside)
Locknuts
Access
Plate
Figure 22
Screen
Figure 21
Remove Bolt
and Locknut
Figure 20