Great Plains YP1625 Operator Manual - Manual (Page 17)

Great Plains Manufacturing, Inc. Preparation and Setup 13
03/12/2012 401-226M-A
Hitching Tractor to Planter
Protecting Hydraulic Motor Seals
Low Pressure (Case) Drain Connection
Machine Damage Risk:
Case Drain Hose must be attached prior to inlet and return
hoses being connected. Also, it must be unhooked last to pre-
vent damage to the fan motor.
7. Attach case drain hose to low pressure drain con-
nection.
8. Connect low pressure return hose to low pressure
return connector.
Machine Damage Risk:
DO NOT hook case drain line to a “power-beyond port”.
9. If the tractor has a limited number of remotes capa-
ble of continuous flow, use them for the hydraulic fan
and optional hydraulic drive. (See “Specifications
and Capacities” on page 109 for tractor require-
ments.)
Hydraulic Hose Hookup
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 cylin-
der 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
Yellow Hydraulic Drive (Option)
High Pressure Fluid Hazard:
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin causing serious injury. Avoid the hazard by
relieving pressure before disconnecting hydraulic lines. Use a
piece of paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems. If an accident occurs,
seek immediate medical attention from a physician familiar
with this type of injury.
Crushing Hazard:
You may be severely injured or killed by
being crushed between the tractor and
planter. Do not stand or place any part of your body between
planter and moving tractor. Stop tractor engine and set park
brake before attaching cables and hoses.
FigureSpacer:
Figure 3
Color Coded Hose Handles
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