MacDon R85 Rotary Disc 13 Foot - Manual (Page 84)

MAINTENANCE AND SERVICING
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82
Revision C
7.5.2 Rock Guards
The R85 is equipped with a rock guard at each
cutting disc location. The rock guard prevents the
cutterbar from digging into the ground, and
protects the disc from coming in contact with
stones and other debris.
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any reason.
A child or even a pet could engage an idling
machine.
DANGER
To avoid bodily injury or death from
unexpected start-up or fall of raised machine:
stop engine, remove key, and engage header
lift cylinder stops before going under
machine for any reason.
CAUTION
Exercise caution when working around the
blades. Blades are sharp, and can cause
serious injury. Wear gloves when handling
blades.
Check rock guards periodically for severe damage
or wear as follows:
a. Raise header fully, stop engine, and remove key.
b. Engage header lift cylinder locks.
c. Inspect rock guards for severe damage, wear, and
distortion. The guards should be replaced if
severely damaged or worn.
d. Check for loose or missing fasteners, and tighten
or replace fastener if missing.
e. See the Technical Manual or your MacDon Dealer
for replacement procedures.
7.5.3 Disc Maintenance
Check daily that discs are not damaged by rocks
or worn excessively from abrasive working
conditions.
They are interchangeable, and a disc can be
moved to a spindle that rotates in the opposite
direction, as long as it is in a useable condition.
The discs are NOT repairable, and must be
replaced if severely damaged or worn.
IMPORTANT
If holes appear in a disc, replace the disc
immediately. Do NOT attempt to repair the
discs. Always use factory replacement
parts.
DANGER
Stop engine, and remove key from ignition
before leaving Operator's seat for any reason.
A child or even a pet could engage an idling
machine.
a. Lower header to ground, shut off engine and
remove key.
b. Open cutterbar doors.
c. Check discs for damage or loose fasteners.
d. Replace damaged discs. Refer to following
section.
e. Replace damaged fasteners. Tighten loose
fasteners.
f. Close cutterbar doors.