New Holland CX720 Operator's Manual page 288

CONCAVE CLEARANCE
The concave clearance is adjustable electrically from
the operator's platform if the field mode is selected
(road / field mode tumbler switch) and can be read
from the InfoViewt monitor.
IMPORTANT: To ensure that the concave clearance
that is displayed on the InfoViewt monitor is correct,
always adjust the concave clearance from the
maximum clearance to the desired clearance.
Adjustment is achieved with the drum concave
clearance control rocker switch.
Basic settings:
• Small grain concave
When the combine is shipped from the factory, with
the small grain concave installed (for wheat),
concave C is set parallel to drum D (front and rear)
calibrated with a clearance X of 10 mm (3/8") at the
first (1) bar and 10 mm (3/8") at the twelfth (12) bar.
• Maize concave
When the combine is shipped from the factory, with
the maize concave installed (for maize), concave C
is set parallel to drum D (front and rear) calibrated
with a clearance Y of 25 mm (126/128") at the first (1)
concave bar and 25 mm (126/128") at the ninth (9)
concave bar.
If excessive grain damage is experienced when
harvesting maize, increase the concave clearance Y.
• Rice concave
If a rice concave is installed, concave C is set to drum
D (front and rear) calibrated with a clearance V of 17
mm (2/3") at the first (1) concave bar and with a
clearance of 22 mm (7/8") at the fourth (4) concave
bar.
NOTE: If excessive grain damage is experienced,
increase the concave clearance.
SECTION 3 – FIELD AND SITE OPERATION
53
54
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3–45