Adjusting The Roll Timing - MacDon R85 Operator's Manual

6.4.2 Adjusting the Roll Timing

Follow these steps to adjust the roll timing (if necessary):
1. Loosen four bolts (A) in slots of yoke plate (B) on upper
roll universal shaft.
2. Manually rotate upper roll until it stops. Make a mark
on yoke flange to align with the center of one of the bolt
heads (A).
3. Manually rotate upper roll in opposite direction until it
stops. Make a second mark on yoke flange to align
with the bolt.
4. Determine the center between the two marks and mark
a third line on the yoke flange.
5. Rotate the upper roll until the bolt lines-up with the
third line.
6. Tighten bolts (A) to secure the position. Torque to
70 ft·lbf (95 N·m).
NOTE:
For additional conditioning action in lighter or tine
stem crops, the distance between the conditioner
roll bars can be adjusted (advanced timing).
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OPERATING THE HEADER
Figure 6.9: Yolk Plate (Upper Roll)
78
Revision F