Great Plains YP3025 Operator Manual - Manual (Page 71)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 67
2013-09-09 Table of Contents Index 401-703M
Row Unit Shut Off
10HD and 25P Series row units are designed to permit
alternate row spacing, which requires disabling the rows
not used. This involves three steps:
1. Shut off seed flow to the row.
2. Lock up the row to reduce opener wear.
3. Disengage the meter drive to reduce meter wear.
This is typically done when switching from twin-row
to single-row operation, even if equipped with
optional Swath Command™.
4. 25 Series only: Disengage (singe row) row clutch if
equipped with optional Swath Command™.
20P Series rows do not have lock-up or meter disengage
capability, but seed flow may be shut off.
Seed Shut Off
Refer to Figure 79
At the Y-tube
a
above the row, turn the valve serving that
row until the handle is perpendicular to the tubing.
Row Unit Lock-Up
15in splitter rows can be pinned in the up position to
accommodate 30in row spacing.
Refer to Figure 79
The lock-up pins
for each rear row unit are located in a
storage hole in the row unit mount. To lock up a unit,
the unit must be raised, and the pin moved to the lock-up
hole
in the row unit shank. Lock-up pins are not stan-
dard on all row spacings. Refer to page 127 for additional
or replacement lock-up pins.
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
may also damage tools.
2. Install lift cylinder locks.
3. Set the down pressure springs be set to the mini-
mum setting, per the instructions on page 62 or
page 65.
4. Raise the row unit high enough that the hole for the
pin is above the lower parallel arm:
a. use a hoist at the rear of the shank
, or
b. use a jack under the shank extension
Refer to Figure 80
5.
Remove the pin from the storage hole and insert
and secure it in the lock-up hole .
6. Lower row unit. Parallel arm rests on lock-up pin.
a. If the row is not served by a Y-tube, loosen the clamp, remove (and secure) the hose. Block the tube fitting with an 817-622C cap.
Figure 78:
Y-tube: Both Rows Operating
22843
1
2 5
Loss of Control and Sharp Object Hazards:
Do not lift a row unit by hand. The weight of the unit, plus the
spring force (even at minimum) is too great (plus, a free hand
is needed for pinning). Even with multiple people lifting,
hand-lifting is unsafe - there are numerous sharp edges, and
the row unit will snap down violently if a grip is lost.
Figure 79
10HD and 25 Series Lock-Up Pin
25269
25193
3
4
6
1
2
3
4
Figure 80
25 Series Row Unit Locked Up
25270
4
3
5
6
3
4