4roll timing, 1checking the roll timing, Roll timing – MacDon R85 Rotary Disc 16 Foot Pull-Type User Manual

Page 101: Checking the roll timing, 4 roll, Important, Danger, 4 roll timing

7.4 Roll Timing

For proper conditioning, the rolls must be properly timed
with each steel bar on one roll centered between two
bars (B) of the other roll. The factory setting should be
suitable for most crop conditions.

IMPORTANT

Roll timing is critical when the roll gap is
decreased because:

• Conditioning is affected

• The bars may contact each other

Figure 7.9

A - Crop flow

B - Roll gap

7.4.1 Checking the Roll Timing

Follow these steps to check the roll timing:

DANGER

Stop engine and remove key from ignition before leaving operator’s seat for any reason. A child or even
a pet could engage an idling machine.

1. Lower mower conditioner fully, stop engine, and

remove key from ignition.

2. Open driveshield. See Section

5.4 Driveshields, page

Figure 7.10

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Rev. D