MacDon R85 Rotary Disc 16 Foot Pull-Type - Manual (Page 183)

MAINTENANCE AND SERVICING
13. Tighten bolts (A) on shield plates (B).
Figure 8.57
14. Remove block of wood (if used).
15. Manually rotate discs to check for interference of feed
plate and adjacent parts.
WARNING
Ensure cutterbar is completely clear of foreign
objects.
These objects can be ejected with
considerable force when the machine is
started, and may result in serious injury or
machine damage.
16. Close cutterbar doors.
8.7.6 Disc Spindles
To prevent damaging the cutterbar and drive systems, each disc is attached to a spindle which incorporates a key
that shears if the disc contacts a large stone, a stump, or other large object. In the event of a sheared key, the disc
stops rotating, but remains attached to the spindle.
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Rev. D