Great Plains V-300F Operator Manual - Manual (Page 26)

V-300, V-300F
148-057M 6/29/2006
24
Adjustments
Seeding Depth
To set drill seeding depth, you must:
• Set coulter depth with tongue cylinder and cylinder
stop bushings on the lift cylinders.
• Level openers with level link on top of frame (initial
adjustment only).
• Set opener depth with T-handles on press wheel.
• If necessary, adjust individual coulters or openers to
seed in tire tracks.
The following is an introduction to how the coulters and
double-disk openers are designed to control seeding
depth.
Coulters
A no-till coulter is mounted on the hitch directly ahead of
each opener on the drill. The coulters cut through heavy
trash and make a groove in the soil for the openers.
Coulter cutting depth is controlled by the tongue cylinder.
You also can change the depth of individual coulters by
changing coulter-mounting height. Refer to Coulter
Depth, page 25, for information on these adjustments.
The amount of coulter down pressure needed to cut a
soil groove varies with soil conditions. Adding weight or
shortening the coulter spring increases coulter down
pressure and cutting force. Refer to Coulter Down Pres-
sure, page 26, for more information on these
adjustments.
Openers
Opener double disks widen the coulter groove to make a
seed bed. Mounted on the rear of each opener is a press
wheel. The press wheels control opener seeding depth
and firm the seed into the soil.
To maintain a consistent seeding depth, upward press
wheel movement is restricted by an independently ad-
justable stop on each opener. Moving this stop changes
the depth at which seed is placed. The mounting height
of openers that run in tire tracks also can be changed.
Refer to Opener Depth, page 27 for information on these
adjustments.
The amount of opener down pressure needed to cut and
widen the coulter groove and to firm the seed into the soil
varies with soil conditions. Opener down pressure can be
adjusted for all openers or individual openers. Refer to
Opener Down Pressure, page 27, for information on how
to make these adjustments.