2019-06-12
401-705M
YP3025A
Operating Instructions
30
Lift Cylinder Lock-Up
When moving the raised Planter more than a short
distance, or over any public road, or when performing
adjustments or maintenance, do not rely solely on the lift
cylinders to keep the mainframe raised.
Install transport locks.
1. If Planter is folded, confirm hitch is in Float.
If Planter is unfolded, hitch may be in any
configuration.
2. Raise the Planter mainframe. See
3. Remove the transport locks from their storage
positions
. Install the transport locks on the
cylinder rods
, securing them with the same pins
used for storage.
4. Lower the lift cylinders onto the locks.
Re-Phasing Lift System
In typical use during a single planting operation, it is
normal for the lift cylinders to get slightly out of phase,
resulting in uneven raising and lowering of the YP3025A
Planter.
Every 8 to 10 passes, or if lifting is uneven, re-phase the
cylinders with this procedure:
1. Raise the Planter completely, and hold the hydraulic
lever or switch in Extend for several seconds after
the Planter reaches full elevation, or until all
cylinders are fully extended.
2. When all cylinders are fully extended, momentarily
reverse (Retract) the control to lower the Planter
3
/
8
inch (13 mm).
Local Float on Hydraulic Tongue
If a hydraulic tongue planter needs to be moved or
transported, and a tractor with compatible DICKEY-john
®
console and CFM switch is not available, use the bypass
valve to provide local float on the tongue cylinder.
1. Check that planter is fully folded, and lowered onto
transport lock channels.
2. If the hydraulic tongue is already above the tug hitch,
move the tug hitch into alignment. Otherwise,
arrange some lifting means, and slowly open the
bypass valve . Slowly lift the tongue to the desired
height and close the valve.
3. Hitch the tug. Slowly open the bypass valve.
4. Close bypass valve before unhitching, and before
connecting to the tractor with the compatible
monitor/CFM. The monitor hitch circuit operation has
no effect with bypass valve open.
Figure 28
Lift Cylinder Locks
31545
1
1
2
2
3
4
Crushing Hazard:
Tongue may drop suddenly when local circuit is floated.
Stand clear and open it slowly
.
Figure 29
Local Float on Hydraulic Tongue
28477
