GREAT PLAINS NO-TILL Air DRILL Manual - Página 5

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Frame height (#1) is measured from the bottom of the opener tool bar

(the largest of the tool bars), and is measured with the drill lowered in the

field position. The recommended height depends on your field

conditions, and whether unit-mounted coulters are installed.

For no-till conditions, a 26 in. height allows the opener parallel arms to run

parallel to the ground giving the opener maximum upward or downward

flotation. In loose or conventional planting conditions, a frame height above

26 in. helps keep the no-till spring forces from burying the openers.

Note: Setting the frame above the 26 in. limits the opener downward

flotation.

Note: Running with the frame below 26 in. limits opener upward flotation

and could cause opener damage especially at the center of the drill.

The hydraulic lift system includes an adjustable stop valve (see Step #5) to

fix the height of the opener frame when the drill is lowered. Make sure the

drill is level and the lift system bled and re-phased before adjusting the tool

bar height.