17 Operators Manual
Any major adjustment of the machine pitch
and depth by the main tilt cylinders may
require the tine frames to be adjusted by the
toplinks to maintain an even depth of tine tips
fore to aft.
Lengthening the toplinks increases front tine
depth which compensates if the main
implement pitch has been tilted rearwards;
and vice versa.
When cultivator-rolling, the tines can be used
to fine up the tilth and provide improved seed
to soil contact by finer aggregation.
Tines should be running at the same depth
for all rows with the toplinks correctly set.
Avoid running the tine frames nose deep; if
more tine pressure is needed tilt the main
machine forwards and then shorten up the
tine frame toplinks so the tine depth is
consistent front to rear.
Set tine depth to the minimum needed for the
surface finish. Set this by adjusting the tilt
setting (main machine pitch) and levelling the
tines fore to aft by the turnbuckles as per
above.
The wing wheels (if fitted) should be set to
just maintain ground contact at the desired
working pitch and depth.
The main centre axle wheels will normally be
clear of the ground in working mode, allowing
the roller to control the depth across the full
machine width.
NOTE: the wing wheels act as
stabilisers and control the wings
when unfolding and folding. As
such, they should be set to within ground
contact wherever possible in work. This also
avoids undue pitching of the wider machines
in work if the ground is unlevel across the
width.
4.7.2 Wing float adjustment
The wings can float over undulations via an
adjustable cushioned suspension system
which is pre-set hydraulically (inner wings) or
via springs (outer wings - 12m only).
The inner main wings are held by oil in the
folding cylinders against an accumulator. This
pressure is adjustable if needed via the valve
block as detailed below.
