214880
116
Revision A
4.5.8
Replacing Cutterbar Spindle Shear Pin
Figure 4.110: Cutterbar Spindles
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).
IMPORTANT:
Ensure correct orientation of the shear pins during replacement.
•
Spindles that rotate clockwise have right-leading threading.
•
Spindles that rotate counterclockwise have left-leading
threading.
NOTE:
Once spindle has risen due to shear pin failure, the spindle
’
s
bearing will become unloaded. Do
NOT
replace the spindle due
to excessive play. Check play after torquing spindle nut and
replacing damaged shear pins.
Figure 4.111: Spindle Nut Tool
NOTE:
A special spindle nut wrench is located under the panel on the
right side of the header. This tool is used to loosen and tighten
the spindle nuts.
