Adjusting Roll Gap - Polyurethane Rolls - MacDon R113 Unloading And Assembly Instructions

3. Loosen jam nut (A) on both sides of the conditioner.
4. Turn lower nut (B) counterclockwise until the upper roll
rests on the lower roll. Ensure the rolls intermesh.
5. Turn lower nut (B) two and a half full turns clockwise to
raise the upper roll and achieve a 6 mm (1/4 in.) roll gap.
6. Hold nut (B) and tighten jam nut (A) on both sides of the
conditioner.
IMPORTANT:
Make sure the roll gap adjustment nuts are adjusted
equally on both sides to achieve a consistent gap across
the rolls.
10.9.2 Adjusting Roll Gap – Polyurethane Rolls
Because polyurethane rolls operate at smaller gaps and the conditioning is less aggressive, the roll gap setting is more
sensitive than on steel rolls.
DANGER
To prevent injury or death from the unexpected start-up 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. Shut down the engine, and remove the key from the ignition.
3. Loosen upper jam nut (A) on both sides of the conditioner
attachment.
4. Turn lower nut (B) counterclockwise until the upper roll
rests on the lower roll.
5. Turn lower nut (B) one full turn clockwise to raise the upper
roll and achieve a 3 mm (1/8 in.) roll gap.
6. Hold nut (B) and tighten jam nut (A) on both sides of the
conditioner attachment.
IMPORTANT:
Make sure the roll gap adjustment nuts are adjusted
equally on both sides to achieve a consistent gap across
the rolls.
7. Rotate the rolls manually and use a feeler gauge at the
ends of the rolls to check that the actual gap is no less than
2 mm (0.078 in.) and no more than 4 mm (5/32 in.).
262300
PERFORMING PREDELIVERY CHECKS
Figure 10.27: Roll Gap Adjustment
Figure 10.28: Roll Gap Adjustment
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A
B
A
B
Revision A