MacDon HC10, Setup, Operation, And Parts Manual

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Revision A
4.9 Conditioner Operation
Intermeshing steel rolls condition the crop by crimping and crushing the stem for quick drying.
WARNING
Keep hands and feet away from discharge opening. Keep everyone at least 100 meters (330 ft.) away from your
operation. Never direct the discharge toward anyone. Stones or other foreign objects can be ejected with force.
WARNING
To avoid bodily injury or death from unexpected start-up of machine, stop engine and remove key before
adjusting rolls.
4.9.1 Roll and Feed Draper Speed
The roll and feed draper speeds change whenever the header knife speed is changed since the drives use the same
hydraulic circuit. They cannot be independently adjusted.
4.9.2 Adjusting Roll Gap
The degree to which the crop is conditioned as it passes through the rolls is controlled by roll gap.
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Figure 4.31: Roll Gap
A - Crop Direction B - Roll Gap
Intermeshing steel rolls condition the crop by crimping and
crushing the stem in several places. This allows moisture release
for quicker drying. The degree to which the crop is conditioned
as it passes through the rolls is controlled by roll gap (refer to
illustration at right). The gap is factory set at 20 mm (3/4 in.) or
at the 1.5 line on the roll gap gauge as shown in Figure
4.32,
page 68 . Gauge readings should be the same at both ends of
the roll.
Correct conditioning of alfalfa, clover, and other legumes is
usually indicated when 90% of the stems show cracking, but no
more than 5% of the leaves are damaged. Use only enough roll
gap to achieve this result.
Grass type crops may require a tighter gap for proper feeding
and conditioning. A larger gap (up to 25 mm [1 in.]) may be
desirable in thick-stemmed cane-type crops; however, too large
a gap may cause feeding problems.
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Figure 4.32: Roll Gap Gauge
If required, you can adjust the roll gap by loosening nut (A) and
turning adjuster (B). Retighten nut (A) after adjustment.
IMPORTANT:
To achieve consistent intermesh across the rolls, be sure that roll
gap gauge (C) reading is the same on both sides of the
conditioner roll.
OPERATION