GREAT PLAINS Yield-Pro Air-Pro YP2425A, Operator'S Manual

Page: 21 / 180

YP2425A Table of Contents Index Preparation and Setup
Great Plains | 401-626M | 2019-06-11 Table of Contents Index 17
Color Coded Hydraulic Hoses
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.
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 line,
which returns hydraulic fluid from the fan motor case.
If the PTO pump option is installed, there are no hoses at
the hitch for fan, hydraulic meter drive, or optional
hydraulic fertilizer pump.
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.
Older Style Hoses with Color Ties
Refer to Figure 4
To distinguish hoses on the same hydraulic circuit, refer
to hose label. The hose under an extended-cylinder
symbol feeds a cylinder base end. The hose under a
retracted-cylinder symbol feeds a cylinder rod end.
Protecting Fan Hydraulic Motor Seals
Motor Seal Damage Risk:
Case Drain Hose must be attached first,
prior to inlet and return hoses being connected.
Case Drain Hose must be detached last,
to prevent damage to the fan motor.
Hydraulic Motor Performance Risk:
DO NOT hook case drain line to a “power-beyond port”
Low Pressure (Case) Drain Connection
1. Attach case drain hose to low pressure drain
connection.
 Case drain hose has the smaller
1
/
4
inch I.D. hose
and small, flat-face, connector.
2. Connect low pressure motor return hose to low
pressure return connector. It is distinguished by a
large (1.06 inch / 2.7 cm diameter) quick coupler.
3. Connect hydraulic hoses to tractor remotes.
Figure 3
Color Coded Hose Handles
31733
Color Hydraulic Function
Gray Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Black Fan
Yellow Hydraulic Drive
Figure 4
Older Style Hoses w/Label
27270
Color Hydraulic Function
White Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Orange Fan
Yellow Hydraulic Drive