New Holland CX720 Operator's Manual page 251

3. Separation
The beater 9, with beater concave 10, strips the straw
from the drum and guides it to rotary separator 11 and
concave 12, which further separates the grain from
the straw.
The straw retarding curtain 13 prevents the rotary
separator from throwing the straw too far onto the
straw walkers 14.
A straw flow beater 15 is standard installed to improve
the straw transport towards the straw walkers and to
enable a smoother flow of material in heavy crop
conditions.
The straw walkers 14 oscillate, lift and tumble the
straw, permitting the remaining grain to fall through
the walkers and slide down the walkers return chutes
onto the rear of grain pan 8.
3–8
SECTION 3 – FIELD AND SITE OPERATION
4. Cleaning
The grain and chaff on the grain pan 8 are transported
to the rear by the reciprocating action of the cleaning
shoe. On units with self-levelling cleaning shoe, an
electrical actuator ensures that the cleaning shoe
automatically remains horizontal in the transverse
axis of the machine, even when operating on side
slopes up to 17%. This innovation increases the
capacity of the cleaning shoe considerably when
operating in hilly conditions.
If the cleaning shoe is not self levelling (fixed cleaning
shoe), operation on slight slopes is made possible by
the installation of hillside dividers on the pre-sieve
and the upper sieve.
7