Great Plains YP2425F-2470 Operator Manual - Manual (Page 72)

68 YP2425 & YP2425F Table of Contents Index Great Plains Manufacturing, Inc.
401-406M Table of Contents Index 2014-07-14
Row Unit Lock-Up
Alternate twin-row units can be pinned in the up position
to accommodate single-row spacing. It is generally
easier to lock up the rear row unit of each pair.
Refer to Figure 84
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.
Note: Replacement pin part number is 805-033C
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
minimum setting, per the instructions on page 66.
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
Crushing 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.
Refer to Figure 85
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.
Refer to Figure 86
7.
Uncouple meter drives for the locked-up rows. Pull
shaft out and park pin in shallow detents.
Machine Damage Risk:
Do not disable meters by removing them or chain drive
damage will occur.
8. Shut off Y-tube port for the current row unit.
9. Repeat for all rows needing lock-up.
10. Reset marker extension (page 53).
11. Reset monitor active row pattern and row spacing to
avoid nuisance alarms.
Certain Machine Damage:
Do not pin the row unit while it is in the lowered position. If
the pin is inserted below the parallel arm, unit damage will
occur when planting begins.
1
4
Figure 84
25 Series Lock-Up Pin
25269
25193
2
3
5
1
2
3
3
Figure 85
25 Series Row Unit Locked Up
25270
4
5
Figure 86
Row Unit Drive Coupler
Engaged (Left) and
Disengaged (right)
26171
2
3