DR 16.5 Safety & Operating Instructions Manual page 30

VISUAL Inspection of the Wear Plate (minimum every 25 hours)
Routinely check the wear plate for a sharp square edge. Using a rounded or chipped wear plate will decrease performance and
cause excessive vibration that will cause damage to the DR SELF-FEEDING Chipper and make chipping difficult for the operator.
Hopper
Bolts (Upper
Left and Lower
Right)
Locknut
(Lower Left)
Figure 49a: Pro
Hopper
Locknut and Washer
(Two on other side of
Hopper Also)
Bolt, Locknut
and Washer
Figure 49b: Pro-XL
Chipper
Knife
Wear Plate
Figure 50
DR
30 ® SELF-FEEDING CHIPPER
Tools Needed:
Chipper Assembly

Two 1/2" Wrenches
The hopper should be supported when the mounting hardware is removed.
Removal of the hopper is difficult for one person. Two people are needed for
Spacer
the hopper removal process.
Bolt, Locknut
and Washer
1.
(Upper Right)
16.5 Model:
a. Remove the Locknut and Washer from the upper right Bolt and lower
left Stud of the Hopper using two 1/2" Wrenches (Figure 49a). The Bolt can be
left in place and make sure the Spacer stays in the location shown.
Chipper b. Remove the Bolt from the upper left and lower right of the Hopper
Assembly
using a 1/2" Wrench.
21.0 Model:
a. Remove the Locknut and Washer from the Bolt on the lower right side
of the Hopper using two 1/2" Wrenches (Figure 49b). The Bolt can be left in
place.
b. Remove the three Locknuts and Washers from the upper right and left
and lower left of the Hopper using a 1/2" Wrench.
2.
3.
Be careful and wear gloves when working near the chipper knife. The knife
edge can cut you if you come in contact with it.
Plate.
4.
(rounded) edges (Figure 50).
5.
those sections in this chapter).
6.
chapter).
Remove the Hopper hardware as described below.
Remove the Hopper from the Chipper Assembly.
Use a stick to rotate the Flywheel until the Knife is next to the Wear
Closely inspect the Chipper Knife and Wear Plate for nicks or dull
If necessary, repair or replace the Chipper Knife and/or Wear Plate (see
Check the Chipper Knife to Wear Plate gap (see that section in this