262391
120
Revision A
IMPORTANT:
If you are unsure in which direction the spindles rotate, refer to
4.4.6 Reconfiguring Cutterbar Crop Stream, page 111
.
1.
Position the rotary disc header at an appropriate height for the task.
2.
Shut down the engine, and remove the key from the ignition.
3.
If the rotary disc header is raised:
a.
Place blocks under each end, or just inside each end, of the cutterbar.
b.
Lower the rotary disc header onto the blocks.
c.
Shut down the engine, and remove the key from the ignition.
d.
Close the auxiliary lift cylinder lock-out valves. For instructions, refer to
3.2.1 Locking and Unlocking Auxiliary Lift
.
1004029
D
B
A
C
Figure 4.71: Disc Blade
4.
Place a pin (or equivalent) in the front hole of the rock
guard to prevent the disc from rotating while you are
tightening the blade bolts.
5.
Install new or reversed blade (A) with shoulder bolt (B)
onto disc (C).
IMPORTANT:
Nuts are one-time use items. When flipping or replacing a
blade, replace it with a
NEW
nut.
6.
Install new nut (D) and torque it to 125 Nm (92 lbf·ft).
WARNING
Ensure that the cutterbar is completely clear of foreign objects.
Foreign objects can be ejected with considerable force when
the machine is started, which can result in serious injury or cause damage to the machine.
7.
Close the cutterbar doors. For instructions, refer to
Closing Cutterbar Doors, page 27
4.4.8
Maintaining Quick Change Blade System
–
Option
The following topics outline maintenance procedures for the optional Quick Change Blade (QCB) system.
Inspecting Retaining Bolts
Check the thickness of the retaining bolts and the quick change plate using the supplied gauge.
DANGER
To prevent injury or death from the unexpected start-up or fall of a raised machine, always stop the engine and remove
the key from the ignition before leaving the operator
’
s seat or making adjustments to the machine. If the rotary disc
header is raised, always close the lock-out valves, and place blocks under the header. Never work on or beneath an
unsupported header.
DANGER
Ensure that all bystanders have cleared the area.
