Great Plains ADI334 Operator Manual - Manual (Page 23)

21
Section 3 Adjustments
5/11/05 Models ADI334 and ADI345 Air Drill Implement 160-195M
Great Plains Mfg., Inc.
Individual Opener Adjustments
You can adjust the depth and down pressure on individual
openers. This is useful for openers that run in tire tracks or
particularly hard ground. Before adjusting any openers, be
sure the drill is level side-to-side and front-to-rear. Refer to
Side-to-Side Frame Leveling, “Preparation and Setup,”
page 14 and Setting Seeding Depth, page 20.
Opener Depth
To adjust the planting depth of individual openers, remove
the lower spring-rod-retaining bolt. Reinstall the bolt in a
different hole. See Figure 3-4.
•
For deeper seeding, move the retaining bolt ahead, to-
ward the drill.
•
For shallower seeding, move the bolt back, away from
the drill.
Opener Spring Down Pressure
To adjust the down pressure of individual openers, move
the W clip to a different hole in the spring rod. Refer to Fig-
ure 3-5.
Figure 3-4
Depth Adjustment
14531
IMPORTANT: If you adjust opener depth, check the
angle of the hoe tip. Refer Hoe-Tip Angle, this page.
•
For greater down pressure, move the clip to a higher
hole.
•
For less down pressure, move the clip to a lower hole.
Hoe-Tip Angle
For maximum hoe-tip life, the tip angle should be set so
the point of the tip runs 1/8-inch lower than the heel as
shown in Figure 3-6.
Figure 3-5
Down Pressure Adjustment
14532
Figure 3-6
Proper Tip Angle
14537