Great Plains 1625AHL Operator Manual - Manual (Page 31)

Great Plains Manufacturing, Inc. Table of Contents Index Operating Instructions 27
2014-04-21 Table of Contents Index 411-020M
Unfold: Prepare Hitched Tractor and Planter
1. Move the planter to level ground.
2. If tractor movement is not desired, put tractor in Park
and/or set parking brakes, or the telescoping
movement of the planter tongue may cause the
tractor to move backward.
Unfold: Raise Wing Frames
3. Extend the planter lift hydraulic circuit. Raise the
planter until the caster and center lift cylinders are
fully extended (wing frames fully raised). Set the
hydraulic circuit to Neutral to hold at full lift. Shut off
tractor.
Note: This disengages the transport hooks (see page 25)
which prevent the frame from fully lowering when
the planter is fully folded. To clear the hooks, the
frame is fully raised.
Unfold: Remove Caster Lock Channels
Refer to Figure 16
4.
Unpin the lock channel at each caster. Store on
tube weldment at caster front face.
Unfold: Remove Center Lock Channels
Refer to Figure 16
5.
Verify that these lock channels are not installed on
the cylinder rods. Typically, they will be in storage, as
they are not used for routine operations. If they are
installed, move them to the tube weldments
on
each side of the lift assembly. See “Remove/Store
Center Lift Locks” on page 28.
Unfold: Re-Phase Fold Cylinders
6. Set Hydraulic Selector Marker/Fold switch to “FOLD”
to enable fold cylinder hydraulics.
7. The fold system uses re-phasing cylinders. It is
necessary to re-phase cylinders so that wing gauge
wheels run in their fully rotated-in positions in front of
planter. To re-phase fold cylinders, move and hold
lever for Marker/Fold in Fold direction (typically
Extend) for 30 seconds. This causes the wings to
push against the polymer buffers.
Unfold: Raise Tongue to Unlock Wings
8. Raise the 3-point hitch to raise wing lock out of the
wing hooks .
Unfold: Partially Unfold
Planter Damage Risk:
Be sure planter’s lift hydraulics are fully raised before
unfolding or frame and/or hook damage WILL occur.
9. Reverse (typically Retract) the fold circuit lever until
wing hooks clear wing lock by about 1 m (3 ft.).
Unfold: Lower Tongue
10. Lower 3-point hitch or hydraulic tongue to planting
position. See page 20 and page 159 for correct hitch
height and depth control settings.
Unfold: Fully Unfold
11. Resume the unfold until the wings are fully unfolded,
wing casters are fully rotated inward, and the tongue
latch has fully captured the roller bushing.
Planter Damage Risk:
Do not plant if the tongue latch is not fully down over the
roller. Frame and opener damage is likely if the planter is
operated with the latch open.
12. Set the fold circuit lever to Neutral.
13. Set the Hydraulic Selector Marker/Fold switch to
center (OFF) or MARKER to lock the wings at
unfolded.
Note: The planter is still raised at this point. Do not lower
the wing frames until lined up at the start of the
first pass.
Figure 16
Wing Frames Raised and Locked
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