Great Plains 3PNG15 Operator Manual - Manual (Page 32)

28 3PNG12 and 3PNG15 Great Plains Manufacturing, Inc.
202-553M 10/06/2008
Seed-Lok ™ Lock-Up
Optional Seed-Lok firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky condi-
tions the wheels may accumulate soil. To avoid problems
associated with this, you can lock-up the firmers.
Refer to Figure 21 (shown with an opener disc removed for
clarity - this task can be performed with discs mounted)
To lock up Seed-Lock wheels:
1. Pull catch wire aside .
2. Pull firming-wheel arm up and release wire to
catch arm.
Opener Depth (Press Wheel Height)
A press wheel attached to each opener body controls
seeding depth. To maintain consistent depth, the rela-
tionship between the bottom of the opener discs 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 operat-
ing position. This maintains pressing action even if
opener discs encounter obstructions or hard soil.
Refer to Figure 22
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.
• For shallower seeding, slide T-handles toward drill.
• For deeper seeding, slide T-handles away from drill.
Figure 21
Seed-Lok™ Lock-Up
27122
2
1
1
2
Figure 22
Press Wheel Adjustment
15659