GREAT PLAINS Yield-Pro Air-Pro YP2425A, Руководство оператора

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Great Plains | 401-626M | 2019-06-11 Table of Contents Index 72
YP2425A Table of Contents Index Adjustments
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 30 inch or 70 cm
rows.
Refer to Figure 89
Use only enough down pressure to cut the seed trench
and maintain proper soil-firming over seed. Excessive
row unit down force will lead to premature wear on row
unit components, uneven seed depth and gauge wheel
slippage.
Refer to Figure 88 (shown at cam setting 2),
Figure 89 and Figure 90
To adjust down pressure, use a 1
1
/
8
inch (29 mm) open
end wrench or the tool stored under the walkboard.
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 .
 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.
Figure 88
25AP Series Row Unit
Spring Adjustment
29605
3
5
2
2
Cam Notch Pounds Kilograms
zero (out of notch) Lock-Up & Maintenance
one 330 150
two 355 160
three 385 175
four 435 200
five 485 220
six 535 245
tip Do Not Use
34133
Figure 89
Row Unit Minimum Cam (at 1)
27065
bottom
4
6
3
Figure 90
Row Unit Maximum Cam (at 6)
27065
top
4
5
2
6