Great Plains 2SF30 Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 33
2014-01-09 Table of Contents Index 155-015M-A
Planting Depth Adjustments
Press Wheel-Opener Linkage Depth
Adjustment
Refer to Figure 28
Attached to the rear of each these openers is one of
several optional press wheels. The press wheel and its
mechanism provide two important functions:
1. The press wheel closes the furrow and gently
presses the soil over the seed.
To provide consistent seed firming, the press wheel is
free to move downward from its normal operation
position. This system maintains pressing action even if
the opener body is lifted as a result of the opener disks
encountering an obstruction or hard soil.
2. The press wheel rolls on the ground providing depth
control to the opener and seed.To maintain a
consistent planting depth, the relationship between
the bottom of the opener disk-blades and the press
wheel is upwardly fixed. The upward stop is
independently adjustable on each opener. The
position of the adjustable stop determines how deep
the seed will be placed.
To change the height of the press wheel, which
automatically changes the seeding depth of the opener,
simply lift the "T" handle located on top of the opener at
the rear and slide forward or rearward until the seeding
depth is correct as shown in the inset in. A spring loaded
pin holds the "T" handle at your setting to maintain the
proper depth.
Disk Opener Spring Pressure Setting
Refer to Figure 29
Each opener spring can be adjusted for down pressure.
This is useful when penetrating hard soil and for planting
in tractor tire tracks. To adjust the pressure, remove the
"W" clip at the bottom of the spring and place it in a
higher hole in the spring rod for more pressure, and in a
lower hole for less pressure.
Figure 28
Direct Link Press Wheel Adjustment
12100
Figure 29
Maximum (left) and Minimum (right)
Pressure
12102
12103