Great Plains YP3025 Operator Manual - Manual (Page 20)

16 YP3010HDP/3020P/3025 Table of Contents Index Great Plains Manufacturing, Inc.
401-703M Table of Contents Index 2013-09-09
Older Style Hoses with Color Ties
Great Plains hydraulic hoses are color coded to help you
hookup hoses to your tractor outlets. Hoses that go to
the same remote valve are marked with the same color
tie.
Refer to Figure 4
To distinguish hoses on the same hydraulic circuit, refer
to hose label. The hose under an extended-cylinder sym-
bol feeds a cylinder base end. The hose under a
retracted-cylinder symbol feeds a cylinder rod end.
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.
Machine 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.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
1. Attach case drain hose to low pressure drain con-
nection.
Note: Case drain hose has the smaller
1 ⁄
4
in I.D. hose
and small, flat-face, connector.
2. Connect low pressure motor return hose to low pres-
sure return connector. It is distinguished by a large
(1.06in/2.7cm diameter) quick coupler.
Machine Damage Risk:
DO NOT connect the case drain line to a
power-beyond-port.
3. Connect hydraulic hoses to tractor remotes.
Color Hydraulic Function
White Wing Fold / Marker Fold / Auxiliary
Blue Lift / (and Hitch if hydraulic tongue)
Orange Fan
Yellow Hydraulic Drive
Figure 4
Plastic Hose Label
27270