Great Plains PT8030 V1012 Operator Manual - Manual (Page 17)

15
Section 2 Planter Operation
PT6030 and PT8030 Pull-Type Planter 401-032M 10/10/12
Great Plains Mfg., Inc.
Rephasing the Hydraulic System
Figure 2-3
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Rephasing the Hydraulic System
!
WARNING!
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin. Check all hydraulic lines and fittings before
applying pressure. Fluid escaping from a very small hole can be
almost invisible. Use paper or cardboard, not body parts, and
wear heavy gloves to check for suspected leaks. If injured, seek
medical assistance from a doctor that is familiar with this type
of injury. Foreign fluids in the tissue must be surgically removed
within a few hours or gangrene will result.
Refer to Figure 2-3:
The lift system on your Great Plains Pull-Type Planter is a
master/slave system. All cylinders in the system are 2/way
cylinders. Rephasing the system is accomplished each
time the planter is lowered to the planting position. If un-
level lifting occurs, lower the planter to the ground and hold
the remote lever momentarily. This time will allow oil to go
from the tractor to the master; bypass to the slave, then re-
turn to the tractor.
If following this procedure does not level the planter, refer
to “Section 7 Maintenance and Lubrication” on
page
45.
Planting Rates
Transmission Adjustment
Planting population changes are accomplished by setting
the sprocket transmission. By changing the combination
of sprockets the desired planting populations can be
achieved. For more information on this, refer to “Section 5
Adjusting Planting Rates” on page
28.
Spring Tensioner on Transmission
Figure 2-4
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