Cutterbar Spindles; Removing Cutterbar Spindles - MacDon R113 Operator's Manual

4.5.2 Cutterbar Spindles

Discs are factory-installed to produce three crop stream, but disc rotation patterns can be changed to suit crop
conditions.
To prevent damage to the cutterbar and drive systems,
each disc is attached to a spindle containing a shear pin (A).
If the disc contacts a large object such as a stone or stump,
the pin will shear and the disc will stop rotating and move
upwards while remaining attached to the spindle with a
snap ring (B).
Refer to 4.5.8 Cutterbar Spindle Shear Pin, page 149
replace shear pin.
IMPORTANT:
•
Spindles that rotate clockwise have right-leading
threading and a smooth top on the spindle gear
shaft (A).
•
Spindles that rotate counterclockwise have left-
leading threading and machined grooves on the
spindle gear shaft (B) and nut (C).
•
If spindle position in cutterbar has changed, the
rotational direction of that spindle MUST remain the
same (i.e., a clockwise spindle must maintain its
clockwise rotation).
•
Failure to maintain rotation pattern can result in
damage to spindle and/or cutterbar components.

Removing Cutterbar Spindles

DANGER
To avoid bodily injury or death from unexpected start-up or fall of a raised machine, stop engine, remove
key, and engage windrower lift cylinder safety props before going under machine for any reason.
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MAINTENANCE AND SERVICING
to
Figure 4.21: Cutterbar Spindles
Figure 4.22: Cutterbar Spindles
116
B
C
A
A
B
Revision A