Great Plains ADI334 Operator Manual - Manual (Page 22)

20
Section 3 Adjustments
Models ADI334 and ADI345 Air Drill Implement 160-195M 5/11/05
Great Plains Mfg., Inc.
Setting the Seeding Depth
For equal seeding depth across all openers, the drill must
be level from front-to-rear and side-to-side. The gauge
wheels set depth for the front of the drill. The press wheels
level the drill from front-to-rear. Side-to-side leveling is
done when the drill is assembled and should not require
re-adjustment.
Before adjusting seeding depth, make sure that the lift cyl-
inders are in phase as explained under Lifting the Drill,
“Operating Instructions,” page 16. Make sure the fold
cylinders are fully extended.
To set the seeding depth and level the drill:
1. Find the depth-control stop and plunger valve on one
of the lift cylinders directly behind the cart frame.
Loosen the bolt and slide the stop all the way down as
shown in Figure 3-1.
2. Raise or lower the drill so that the front rank of open-
ers is at the desired depth.
3. Slide the depth-stop clamp up the cylinder rod as far
as possible, making sure it fully depresses the plunger
rod. See Figure 3-2.
4. Check the depth of the rear rank of openers. If they are
not the same as the front rank, adjust the press
wheels to level the drill.
To adjust the press wheels, refer to Figure 3-3. Re-
move the handle lock pin and slide the handle back.
•
To raise the rear rank of openers, turn the rod coun-
terclockwise, when viewed from above, so the dis-
tance from the handle to the press wheels
increases.
•
To lower the rear rank of openers, turn the rod clock-
wise, when viewed from above, so the distance from
the handle to the press wheels decreases.
Figure 3-1
Depth-Control Stop
14500
Figure 3-2
Plunger Location
14500
Plunger
Figure 3-3
Press Wheel Adjustments
14501
Lock Pin
Lo
wer or
Deeper
Section 3
Adjustments