MacDon R113 - Roll Tension; Adjusting Roll Tension

OPERATION
3. Loosen and back off upper jam nut (A) on both sides
of conditioner.
4. Turn stop nut (B) counterclockwise until upper roll rests
on lower r oll. Ensu re both rolls intermes h.
5. Turn stop nut (B) one full turn clockwise to raise the
upper roll and achieve a 1/8 in. (3 mm) roll gap.
NOTE:
the amo unt of thread (C) protruding through the jam
nut is equal to the 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.
6. Tighten jam nuts (A) on both sides.
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 5/64 in. (2 mm) and no more than 5/32 in. (4 mm).
Figure 3.101: Jam Nut, Adjusting Nut, and
Roll Gap
3.15.7 Roll Tens
ion
Roll tension (the pressure holding the rolls together) is factory-set to maximum and is adjustable.
Heavy crops or tough forage can cause the rolls to separate; therefore, maximum roll tension is required to ensure
that materials are sufficiently crimped.
To prevent over-conditioning of light alfalfa and short grasses, apply less roll tension.
Adjusting Roll Tension
Roll tension is factory-set to maximum and can be adjusted as follows:
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.
147910 87 Revision A