Cutterbar Spindles - MacDon R113 Operator's Manual

4.5.3 Cutterbar Spindles

Discs are factory installed to produce three crop-streams, 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 pins will shear and the disc will stop rotating
and move upwards while remaining attached to the spindle
with a snap ring (B). Refer to
to replace shear pin.
Shear Pin, page 184
IMPORTANT:
• Spindles that rotate counterclockwise have left-handed
threading and machined grooves on the spindle nut.
• Spindles that
right-handed threading.
Reducing or increasing the number of crop streams will
produce the following results:
• Reducing the number of crop streams will result in
narrower windrows.
• Increasing the number of crop streams will result in
smoother, wider windrows.
NOTE:
Increasing the number of crop streams will
also increase the number of diverging disc
pairs which may negatively affect cut quality in
certain conditions.
169820
MAINTENANCE AND SERVICING
4.5.10 Cutterbar Spindle
rotate clockwise have
Figure 4.44: Cutterbar Spindles
Figure 4.45: 13- and 16-Foot Cutterbar
143
Revision A