Adjusting Roll Gap: Steel Rolls; Adjusting Roll Gap: Polyurethane Rolls - MacDon R113 Operator's Manual

Adjusting Roll Gap: Steel Rolls

DANGER
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
from ignition before leaving operator's seat for any reason.
1. Lower mower conditioner fully.
2. Stop engine and remove key.
3. Loosen and back off upper jam nut (A) on both sides
of conditioner.
4. To raise the upper roll and increase roll gap (C), turn
lower nut (B) clockwise.
NOTE:
The amount of thread protruding through the jam
nut indicates roll gap (C). Factory setting is 1/4 in.
(6 mm) which equates to 1/4 in. (6 mm) of roll gap.
NOTE:
When adjusting roll gap, be sure the same amount of
thread is protruding on both sides of the conditioner
roll to achieve a consistent gap across the rolls.
5. To lower the upper roll and decrease roll gap (C), turn
lower nut (B) counterclockwise.
6. Tighten jam nuts (A) on both sides.

Adjusting Roll Gap: Polyurethane Rolls

The roll gap setting on polyurethane rolls is more sensitive than on steel rolls because the polyurethane rolls
operate at smaller gaps and the conditioning is less aggressive.
DANGER
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
from ignition before leaving operator's seat for any reason.
1. Lower mower conditioner fully.
2. Stop engine and remove key.
147910
OPERATION
Figure 3.100: Jam Nut, Adjusting Nut, and
Roll Gap
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Revision A