215333
157
Revision A
4.4.5
Replacing Cutterbar Spindles
1011409
A
B
Figure 4.53: 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).
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.
Refer to
4.4.13 Replacing Cutterbar Spindle Shear Pin, page 212
to replace shear pin.
1019153
A
B
C
Figure 4.54: Cutterbar Spindles
IMPORTANT:
•
Spindles that rotate clockwise have right-leading
threading and are identified by a smooth top on the
spindle gear shaft (A).
•
Spindles that rotate counterclockwise have left-leading
threading and are identified by machined grooves on
the spindle gear shaft (B) and nut (C).
•
If the spindle position in the cutterbar has changed, the
rotational direction of that spindle
MUST
remain the
same (that is, a clockwise spindle must maintain its
clockwise rotation).
•
Failure to maintain the rotation pattern can result in
damage to spindle and/or cutterbar components.
•
Safecut (shear pin) will not work if the spindles used are
in the wrong orientation.
