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Revision A
3.8
Conditioner
Rolls condition the crop by crimping and crushing the stem in several places, which allows the release of moisture resulting
in faster drying times. There are two roll conditioner options
—
steel conditioner rolls and polyurethane rolls.
3.8.1
Roll Gap
The roll gap controls the degree to which crop is conditioned as it passes through the rolls. Roll gap is factory-set at
approximately 6 mm (1/4 in.) for steel rolls, and 3 mm (1/8 in.) for polyurethane rolls.
Steel rolls can be operated over a large range of roll gap settings (intermesh). Using a roll gap of (up to) 25 mm (1 in.), they
are suited to a wide range of crops (including alfalfa and thicker-stemmed cane-type crops). However operating with too
large of a gap may cause feeding problems.
Grass-type crops may require less gap for proper feeding and conditioning.
IMPORTANT:
If using settings below the factory setting, visually inspect the roll gap to ensure that there is no metal-to-metal contact
between the upper and lower rolls.
Adjusting Roll Gap
–
Steel Rolls
To adjust the roll gap, follow the procedure below:
WARNING
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.
Shut down the engine, and remove the key from the ignition.
1028125
A
B
Figure 3.75: Roll Gap Adjustment
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) clockwise to increase gap or
counterclockwise to decrease gap.
NOTE:
Make further adjustments to roll gap based on header
performance and crop conditions.
6.
Hold nut (B) and tighten jam nut (A) on both sides of the
disc header.
IMPORTANT:
Make sure the roll gap adjustment nuts are adjusted
equally on both sides of the disc header to achieve a
consistent gap across the rolls.
