Great Plains 3PYPA Operator Manual - Manual (Page 21)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 17
03/20/2012 Table of Contents Index 401-647M
Hydraulic Hose Hookup
High Pressure Fluid Hazard:
Shut down tractor before making hydraulic connections. The
3PYPA requires a power-beyond connection. Power-beyond
ports are always under pressure when the tractor is running.
Attempting a connection is likely to result in injury. Only
trained personnel should work with system hydraulics.
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin causing serious injury. If an accident
occurs, seek immediate medical assistance from a physician
familiar with this type of injury.
Use paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems.
Refer to Figure 7
Great Plains hydraulic hoses have 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.
Current Style Color Coded Hose Handles
Null4.aac: anchor
Null4.aac:
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.
For hydraulic fan and drive motors, connect the hose
under the retracted cylinder symbol to the pressure side
of the motor. Connect the hose under the extended cylin-
der symbol to the return side of the motor.
The fan motor further requires hookup of a third line,
which returns hydraulic fluid from the fan motor case.
Color Hydraulic Function
Steering (no color code)
Black Fan
Gray Wing Fold / Marker Tilt/Fold
Blue Lift / Down Pressure
Yellow Hydraulic Drive
Null4:
.eps
100%
Figure 7
Color Coded Hose Handles
31733