Great Plains ADC1150 Operator Manual - Manual (Page 63)

61
Section 4 Adjustments
7/28/10 Model 1150 1995 - 1997 167-058M
Great Plains Mfg., Inc.
side-to-side, Side-to-Side Frame Leveling under the “Im-
plement Assembly and Setup” section on page 28, and
front-to-rear.
Shear Bolt and Spring Reset Opener Depth
To adjust the planting depth of individual openers, such as
those running in tire tracks, remove the lower spring rod
retaining the bolt, move the rod to a hole ahead or behind
the current one and re-install the bolt, refer to Figure 4-14.
Shear Bolt and Spring Reset Opener Down Pressure
To adjust the down pressure of individual openers, such as
those running in tire tracks or in very hard ground, move
the “W” clip to a different hole in the spring rod, refer to Fig-
ure 4-15.
Depth Adjustment
Figure 4-14
14531
NOTE: Moving the rod to a higher hole will cause the
seed to be placed deeper into the soil.
NOTE: If the opener depth is adjusted check tip angle
and adjust if needed, refer to the following Hoe Tip
Angle for adjustment instructions.
Down Pressure Adjustment
Figure 4-15
14532
Hoe Tip Angle
For maximum hoe tip life the tip angle should be set so that
the point of the tip runs 1/8” lower than the heel, refer to
Figure 4-16. This adjustment may be required if the open-
er depth is adjusted.
•
C-shank openers: Tip angle is preset at factory and is
not adjustable.
•
Shear bolt openers: To adjust the tip angle, move the
shear bolt to a higher or lower hole. (Use 5/16” x 3”
grade 5 bolt only), refer to Figure 4-17.
•
Spring reset openers: To adjust the tip angle, turn the
trunnion bolt, refer to Figure 4-18, until the tip angle is
correct.
NOTE: Moving the “W” clip to a higher hole will in-
crease the down pressure on the opener.
Proper Tip Angle
Figure 4-16
14537
Tip Angle Adjustment (Shear Bolt)
Figure 4-17 14538