
2019-03-08
196-359M
3N-4010F, 3N-4010HDF, and 3N-4020F
Preparation and Setup
14
Make Hydraulic Connections
High Pressure Fluid Hazard:
Only trained personnel should work on system hydraulics!
Escaping fluid under pressure can penetrate skin, causing
serious injury. Avoid the hazard by relieving pressure before
disconnecting hydraulic lines. Use a piece of paper or
cardboard, NOT BODY PARTS, to check for leaks. Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. If an accident occurs, seek immediate
medical attention from a physician familiar with this type of
injury.
Hydraulic Circuit Connections
Great Plains hydraulic hoses are color coded handle
grips to help you hookup hoses to your tractor outlets.
Hoses that go to the same remote valve are marked with
the same color.
To distinguish hoses on the same hydraulic circuit, refer
to the symbol molded into the handle grip. Hoses with an
extended-cylinder symbol feed cylinder base ends.
Hoses with a retracted-cylinder symbol feed cylinder rod
ends.
The drill has three or four hydraulic circuits. The standard
circuits power drive/locks, lift, and fold. If markers are
present, they require a fourth circuit (or an additional
selector valve sharing the fold circuit).
If the tractor has only one circuit rated for continuous
flow, reserve it for the hydraulic drive.
1. Shut down tractor hydraulics.
2. Connect the hydraulic drive circuit.
3. Connect remaining circuits.
4. Check hose routing to ensure adequate slack for link
arm movement, and clearance from pinching or
abrading drill components.
5. If the drill is to be unfolded, set the selector valve to
Locks (handle to drill center). Valve is located near
rear end of left tongue tube.
Current Style Color Coded Hose Handles
Figure 5
Color Coded Hose Handles
31733
Hose Color
Hydraulic Function
Gray
Fold
Blue
Lift
Green
Marker Cylinders (Option)
Yellow
Hydraulic Drive and
Wing and Swivel Locks
The drive is compatible only with closed center, PC (pressure
compensated) closed or LS (load sensing) hydraulic systems.
Do not use an open center system.
Figure 6
Hitching: Drive/Lock Selector Valve