25 series row unit lock-up – Great Plains 2525F Operator Manual User Manual
Page 37
Adjustments 33
01/23/2012
118-232M
25 Series Row Unit Lock-Up
Alternate 25 Series twin-row units can be raised and
pinned to accommodate alternate spacings. It is gener-
ally easier to lock up the rear row unit of twin-row pair.
Refer to Figure 38
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 drill. Although this adjustment can be
made with the drill lowered, the springs will be in ten-
sion, and will require more effort. The extra force
may also damage tools.
2.
Set the down pressure springs be set to the mini-
mum setting, per the instructions on page 29.
3.
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 Hazard:
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.
Remove the pin from the storage hole
and secure it in the lock-up hole
5.
Lower row unit. Parallel arm rests on lock-up pin.
Insert an optional plug in the seed cup, inside the
seed box.
7.
Repeat for all rows needing lock-up.
8.
Reset marker extension (page 25).
9.
Re-check row unit down-force on the active rows.
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
FigureSpacer
Figure 38
25 Series Lock-Up Pin
25269
29126
2
3
5
FigureSpacer
Figure 39
25 Series Row Unit Locked Up
25270
5
FigureSpacer
Figure 40
25 Series: Seed Cup Plugs
26279
3