Great Plains YP1220 Operator Manual - Manual (Page 28)

24 YP1220 Great Plains Manufacturing, Inc.
401-506M 03/14/2012
Unfolding the Planter
Crushing, Pinch-Point and Overhead Hazards:
To prevent serious injury or death:
▲ Fold only if hydraulics are bled free of air and fully charged
with hydraulic oil.
▲ Stay away from frame sections when they are being raised
or lowered.
▲ Keep away and keep others away when folding or unfolding
planter.
Unfold planter on level ground with tractor in neutral.
1. Switch drive line clutches off.
Refer to Figure 22
2.
Set electronic valve selector switch in tractor to
“FOLD” to activate fold cylinder hydraulics.
3. Activate lift hydraulics. Raise planter until lift hydrau-
lics are fully raised.
Planter Damage Risk:
Be sure planter’s lift hydraulics are fully raised before unfold-
ing or machine damage WILL occur.
Refer to Figure 23
4.
Raise 3-point hitch to release wing hooks.
5. The fold system uses re-phasing cylinders. It is nec-
essary to re-phase cylinders so wing gauge wheels
to run in their fully rotated positions in front of planter.
To re-phase fold cylinders:
Move and hold lever in fold direction for 30 seconds.
This causes wings to push against the tongue trans-
port hooks.
Refer to Figure 24
6.
Reverse fold lever until wings clear transport hooks
by a few feet.
7. Lower 3-point hitch to planting position. See page 15
and page 29 for correct hitch height and depth con-
trol settings.
Planter Damage Risk:
Failure to lower the 3-point before unfolding WILL result in
opener or seed delivery system damage.
8. Unfold planter fully to planting position.
Figure 22
Selector Switch
21980
Figure 23
Transport Hooks
25030
➁
Figure 24
Wing Hook & Wing Lock
22815
27288
➂
➃