Great Plains YP1220 Operator Manual - Manual (Page 17)

Great Plains Manufacturing, Inc. Preparation and Setup 13
03/14/2012 401-506M
Hydraulic Hose Hookup
High Pressure Fluid Hazard:
Relieve pressure before disconnecting hydraulic lines. Escap-
ing fluid under pressure can have sufficient pressure to pene-
trate the skin causing serious injury. Use a piece of paper or
cardboard, NOT BODY PARTS, to check for leaks. Wear pro-
tective gloves and safety glasses or goggles when working with
hydraulic systems. If an accident occurs, seek immediate medi-
cal attention from a physician familiar with this type of injury.
Refer to Figure 3
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
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 cyl-
inder symbol to the return side of the motor.
The fan motor further requires hookup of a (third) case
drain line, which returns lubricating/cooling fluid.
Color Hydraulic Function
Green Fold/Marker
Blue Lift/Tongue
Black Fan
Figure 3
Color Coded Hose Handles
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