Great Plains 1005NT Operator Manual - Manual (Page 10)

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Section 1 Preparation and Setup
705 and 1005 End-Wheel No-Till Drill 150-213M 4/12/05
Great Plains Mfg., Inc.
5. Store jack on top of tongue as shown in Figure 1-4.
Figure 1-4
Jack in Transport Position
Hydraulic Hose Hookup
Great Plains hydraulic hoses are coded to help you hook-
up hoses to your tractor outlets. To distinguish hoses on
the same hydraulic circuit, refer to plastic hose holders.
See Figure 1-5. Hose under extended-cylinder symbol
feeds cylinder base ends. Hose under retracted-cylinder
symbol feeds cylinder rod ends.
Figure 1-5
Hydraulic Hose Label
Route lift hoses along tongue and through hose loop on
front of tongue. Connect hoses to tractor remote valve.
Bleeding the Hydraulics
To function properly, the hydraulics must be free of air. If
the hydraulics have not been bled, they will operate with
jerky, uneven motions. If hydraulics were not bled during
initial drill setup or if you replace a part in hydraulic system
during the life of the drill, complete the following proce-
dures.
1. Check hydraulic fluid in tractor reservoir and fill reser-
voir to proper level. Drill-system capacity is about 1
gallon. Add fluid to system as needed. A low reservoir
level may draw air back into the system, causing jerky
or uneven cylinder movements.
2. Jack up and support front frame tube at a point close
to each end wheel.
3. With frame blocked and supported, unpin cylinders
from drill frame. Turn cylinders upside down and wire
or otherwise safely support rod ends of cylinders
higher than base ends.
4. With tractor engine idling, engage tractor hydraulics to
extend cylinder rods. When cylinder rods are com-
pletely extended, hold remote lever on for one minute.
5. Retract cylinders. Extend cylinders again and hold
remote lever on for one more minute. Repeat this step
two more times to completely bleed system.
6. Repin cylinders to drill frame with rod ends to wheel
arms. If any air still is trapped in either cylinder, the cyl-
inder will have a spongy, erratic movement and the
drill will not raise evenly. If necessary, repeat bleeding
process.
7. Refill tractor hydraulic fluid reservoir to its proper level.
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