Great Plains P18140C Operator Manual - Manual (Page 25)

25 8-10m Press Range
Operating Instructions
4. Adjustment / Operation
4.6 Double Disc Roller
The standard DD600/DD700 roller is made
up of individual Double Disc (patented) Ring
segments.
The DD rings are designed to consolidate
the soil whilst cutting and crushing any clods.
Even in heavy, wet soils it can easily be
operated with minimal blockages occurring.
The rear DD roller carries a proportion of the
machine’s weight to ensure consolidation.
It also regulates the depth of the machine.
The corrugated surface left by the roller is
weatherproof both for wet or dry situations.
4.5 Levelling Boards
The action of the sprung leaf type levelling
boards is to carry and drop soil to level in
front of the press rings, to rub clod against
clod for additional soil breakdown, to force
clods down into the soil profile and to present
remaining clods passing between the leaves
into the path of the press rings.
4.7 Out-Rigger Wheels
The Out-Rigger units support the wing tips
in work ensuring a level soil finish. The out-
Rigger units also support and lock the wings
during road transport.
Fig. 4.06: Levelling Boards
Fig. 4.07: Double Disc Roller
Fig. 4.08: Out-Rigger Units