Great Plains PD8070 Operator Manual - Manual (Page 19)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 15
2014-07-23 Table of Contents Index 401-479M
Current Style Color Coded Hose Handles
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.
Refer to Figure 6
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
cylinder 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.
Older Style Hoses with Color Ties
Refer to Figure 7
Each hose set has a label for flow conventions. The label
uses cylinder Base/Extend and Rod/Retract icons.
Be sure to connect these to the matching tractor
remotes, so that remote levers are activated as
described in this manual.
Hoses that go to the same remote valve are marked with
the same color tie.
Color Hydraulic Function
Blue Lift Cylinders
Green Marker Cylinders
Figure 6
Current Color Coded Hose Grips
31733
Color Hydraulic Function
Blue Lift Cylinders
Orange Marker Cylinders
Figure 7
Older Style Hoses with Label
27270