MacDon R85, Operator'S Manual

Page: 88 / 188

OPERATING THE HEADER
6. Center the upper roll bar (B) between two lower
roll bars.
7. Inspect roll gap at both ends of the rolls. Gap (C)
should be 12.7 mm (0.5 in.).
NOTE:
Factory setting is 12.7 mm (1/2 in.). A gap of
16 mm (5/8 in.) is strongly recommended for
heavier crop conditions.
IMPORTANT:
Roll timing is critical when the roll gap is
decreased because the bars may contact each
other if the timing is wrong.
8. To check roll timing, refer to
4.4 Roll Timing, page 79
.
Figure 4.3: Conditioner Roll Gap (Roll Spacing
Not to Scale)
A - Direction of Crop Flow B - Center Roll Bars
C - Roll Gap
9. Reinstall the conditioner shield (A) and secure with
bolts (B).
10. Close the driveshield. Refer to
3.4 Driveshields, page
28
.
Figure 4.4: Conditioner Shield
4.2.2 Adjusting Roll Gap
DANGER
To avoid bodily injury or death from unexpected startup of the machine, always stop the engine and remove
the key from the ignition before leaving the operator’s seat for any reason.
1. Lower the header fully.
2. Stop the engine and remove the key.
3. Open the driveshield. Refer to
3.4 Driveshields, page 28
.
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Revision B