Row unit lock-up, Caution – Great Plains YP1625 Operator Manual User Manual
Page 53
Great Plains Manufacturing, Inc.
Adjustments
49
07/09/2009
401-226M
Row Unit Lock-Up
IMPORTANT !
Do not lock up rear row units. They will strike other
machine components in folding, and be damaged.
Alternate twin-row units (the front units) can be pinned in
the up position to accommodate single-row spacing.
Refer to Figure 55
The lock-up pins
for each front 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: If you lose a pin, the replacement 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 assist cylinder locks. Lower parking stands.
3.
Set the down pressure springs to the minimum force,
per the instructions on page 48.
4.
Raise the row unit high enough that the hole for the
pin is above the lower parallel arm. This can be done
in several ways, including:
a. use a hoist at the rear of the shank
b. use a jack under the shank extension
IMPORTANT !
Raising a row unit on a block by lowering the planter is
risky. Full lowering can easily damage components,
and hydraulic failure is a safety hazard.
Remove the pin from the storage hole
and secure it in the lock-up hole
6.
Lower row unit until lower parallel arm rests on lock-
up pin.
7.
Shut off Y-tube port for the current row unit.
8.
Repeat for all rows needing lock-up.
IMPORTANT !
Do not pin the row unit while it is in the lowered posi-
tion. If the pin is inserted below the parallel arm, unit
damage will occur when planting begins.
Figure 55
25 Series Row Unit Lock-Up Pin
25269
25193
1
2
3
4
5
!
CAUTION
Do not attempt to lift the row unit by hand. The weight of the
unit, plus the force of the springs (even at minimum) is too
great (plus, a free hand is needed for pin insertion). 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 56
25 Series Row Unit Locked Up
25270
5
3