14
Transport Position
When in the transport position the hydraulic cylinders are
fully extended. In this position the cylinders fully equalise
by allowing oil to bypass the master cyclinder piston. It is
recommended to raise the drill into the transport position
when turning at headlands or regularly to counteract the
effects of oil leakage past the piston and ensure cylinder
rods are equally extended and minimise variations in
sowing depth.
Coulter Penetration Depth
To create the ideal seed bed the front coulter should
cut approximately 20mm below the double discs. If more
undercut is required or the ground is particularly hard and
better penetration is required, the carrier beam can be
lowered by releasing the four M16 bolts
(1) at each end of
the carrier beam (2) and adjusting the coulter adjustment rod
assembly (3) See fig 7. Also refer to the maintenance section.
The carrier beam is factory set in its upper most position.
Note: The front coulter willl sharpen with initial use and
therefore penetration ability will improve.
Double Disc / Sowing Depth
The penetration depth of the double discs is dependant on
two aspects.
1 The weight applied from the machine’s mass.
2 The press wheel adjustment.
If the ground is hard and the double discs are not
penetrating to the desired depth the press wheels will
not be in contact with the ground. To increase the weight
applied refer to “Front Coulter & Dragbar Loading”.
Where the loading applied to the double discs exceeds
the ground resistance the remaining load is transferred to
the press wheels. The running height of the press wheel in
relation to the double discs controls the sowing depth. See
“Press Whel Adjustment”.
Note: Ground penetration ability will increase as the double
discs sharpen and the paint wears off.
Press Wheel Adjustment
Press wheels are used to control the seeding depth and
compact the soil after sowing to give good seed/soil
contact. To adjust the press wheel setting press down the
press wheel (1) and reposition the jaw lock pin (2) in the
desired notch. Refer fig 8.
Double Disc Scrapers
Scrapers are fitted to the rear of the double disc casting
and prevent soil buildup on the inside face of the disc.
The scrapers will need to be adjusted as the discs wear
(reduce in diameter). If not adjusted the scrapers will
overhang the disc edge and wear unevenly. Scrapers are
factory set in the correct initial operating position and don’t
require adjustment before drill use.
fig 7
fig 8
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1
2
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