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133
Revision A
4.4.10
Rock Guards
The machine is equipped with rock guards at each cutting disc location. Rock guards prevent the cutterbar from digging
into the ground and protect the disc from coming into contact with stones and other debris. Periodically inspect the rock
guards for damage. Replace them as necessary.
Inspecting Rock Guards
Rock guards protect the cutting blades from damage. Inspect them periodically to ensure they are not damaged or
worn out.
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.
WARNING
Exercise caution when working around the blades. Blades are sharp and can cause serious injury. Wear gloves when
handling blades.
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
.
1028185
Figure 4.94: Rock Guards
4.
Inspect the rock guards for wear, cracks, damage, or
distortion. Replace any rock guard if it is worn to 75% or
less of its original thickness.
NOTE:
The factory thickness of the rock guards is 5 mm (0.2 in.).
5.
Check the guards for loose or missing fasteners. Tighten or
replace the fasteners as needed.