Important – MacDon R85 Rotary Disc 13 Foot Self-Propelled Windrower Header User Manual
Page 79
4. Loosen upper jam nut (A) on both sides of conditioner.
5. To increase roll gap (increase conditioning action), turn
lower nut (B) clockwise.
6. To decrease roll gap (reduce conditioning action), turn
lower nut (B) counterclockwise.
7. Measurement at (C) should be 0.75 in. (19 mm).
8. Once adjustment is complete, hold nut (A) and torque
jam nut (B) to 75 ft-lbf (102 N·m).
NOTE: When adjusting roll gap, be sure that the
thread protruding at the adjustment is
the same on both ends of the conditioner
rolls.
This will achieve consistent
intermesh across the rolls.
9. Check roll gap, see Section
IMPORTANT
Roll timing is critical when the roll gap is
decreased because the bars may contact each
other if the timing is wrong.
10. See Section
for instructions
on checking the timing.
11. Close the driveshield See Section
Figure 6.5: Roll Gap Adjustment Bolt
A - Upper Jam Nut
B - Lower Nut
C - 0.78 in. (19 mm)
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Rev. E