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Great Plains YP625PD Operator Manual User Manual

Page 54

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50

YP625PD

Table of Contents

Index

Great Plains Manufacturing, Inc.

401-754M

Table of Contents

Index

02/23/2011

An adjuster cam

sets down pressure individually for

each row unit. This is useful for penetrating hard soil and
planting in tire tracks. For best results always adjust
tractor tires so they are not ahead of 110 cm rows.

Refer to Figure 48

Use only enough down pressure to cut the seed trench
and maintain proper soil-firming over seed. With a full
seed load, the force on each row is up to 54 kg higher at
start of planting.

Excessive row unit spring force causes premature wear
on row unit components and uneven seed depth. If all
rows are set to cam 6, some lighter planter
configurations could be lifted out of ground contact.

Refer to Figure 47 (shown at cam setting 2),
Figure 48 and Figure 49
To adjust down pressure, use a 29 mm open end wrench
or the tool

stored at the left end of the planter.

1.

Raise the planter. Although this adjustment can be
made with the planter lowered, the springs will be in
tension, and will require more effort. The extra force
required may also damage tools.

2.

Install lift cylinder locks.

3.

Put tractor in Park and shut it off.

4.

Position wrench on the fixed nut

near or slightly

forward of vertical.

5.

Pull upper spring link

back.

6.

Move the adjustment cam

to the new setting on

the spring adjust bar

.

Note: Do not set all rows higher than notch four. Using

high settings across all rows causes uneven
planting. Individual rows may be set higher if
running in tire tracks.

Null4:

Figure 47

25AP Series Row Unit

Spring Adjustment

31034

3

5

2

2

Cam Notch

Pounds

Kilograms

zero (out of notch)

Lock-Up & Maintenance

one

255

115

two

265

120

three

285

130

four

315

145

five

345

155

six

375

170

tip

Do Not Use

Values are down force with hoppers empty

31947

Figure 48

Row Unit Minimum Cam (at 1)

27065

4

6

3

Figure 49

Row Unit Maximum Cam (at 6)

27065

4

5

2

6