MacDon R85 Rotary Disc 13 Foot Pull-Type - Manual (Page 70)

MAINTENANCE AND SERVICING
Form 169454
68
Revision A
7.8.2 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.
7.8.3 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.