GREAT PLAINS 1205NT, Руководство оператора, Страница: 28 / 64

1205NT Table of Contents Index Adjustments 24
3/7/19 Table of Contents Index 150-131M
Opener Adjustments
Opener Down Pressure
Opener springs provide the down pressure necessary
for opener disks to open a seed trench. The springs
allow the openers to float down into depressions and up
over obstructions.
Each opener spring can be adjusted for down pressure.
This is useful when penetrating hard soil and for
planting in tractor tire tracks.
Opener Seeding Depth
A press wheel attached to each opener body controls
seeding depth. To maintain consistent depth, the
relationship between the bottom of the opener disks
and press wheel is fixed upwardly by an adjustable stop
on each opener.
The press wheels also close the seed trench and gently
press soil over seed. To provide consistent soil firming,
press wheels are free to move down from normal
operating position. This maintains pressing action even
if opener disks encounter obstructions or hard soil.
Set opener seeding depth by adjusting press-wheel
height. To adjust, first raise drill slightly, then lift and
slide T-handles on top of openers as shown in
Figure 17.
• For shallower seeding, slide T-handles toward drill.
• For deeper seeding, slide T-handles away from
drill.
Maximum Pressure
Minimum Pressure
Figure 16
Opener Down Pressure Adjustment
T-Handle
Figure 17
Press Wheel Adjustments