215026
138
Revision A
4.6.8
Cutterbar Spindle Shear Pin
1011409
A
B
Figure 4.133: Cutterbar Spindles
To prevent damage to the cutterbar and drive systems, each
disc is attached to a spindle containing 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 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 a 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.
1029010
A
Figure 4.134: Safecut Spindle-Nut Wrench
NOTE:
A special spindle-nut wrench (A) is located under the panel on
the right side of the header. This tool is used to loosen and
tighten the spindle nuts.