Power Beyond
Connections
for
Great Plains 3PYP Planters
Equipped With Hydraulic Steering
This Guide Contains
Information For Connecting
Great Plains 3PYP Planters
Equipped With Hydraulic Steering
to Power Beyond Hydraulics on
John Deere,
Case IH, New Holland,
Massey, AGCO, Challenger, & Fendt
Tractors
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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Current revisions of this Power Beyond Connections for 3PYP
Planters Equipped With Hydraulic Steering are posted on the
Great Plains Mfg public website under:
www.greatplainsmfg.com/support/servicedocument s.html
and
www.greatplainsmfg.com/manuals/plantermanuals.html
Make sure you are using the most current revision of the guide.
The date of the revision is shown at the bottom of each page.
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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Explanation
The purpose of this guide is to show the port locations for connecting Great Plains 3PYP
planter fan motor to case drain & motor return and steering hydraulics to tractor power beyond
hydraulic connections. The information obtained for this guide was taken directly from the
tractor manufacturer’s information that is available on-line and through tractor dealers.
Since tractor equipment and options vary , the connections shown in
this guide must be verified through the tractor manufacturer or dealer
to prevent damage to the tractor and implement hydraulic systems.
Great Plains continuous flow fan motors require case drain and motor return lines to protect
the motor during use. The case drain line must be connected first, then connect motor return
line before connecting the fan pressure line. Failure to do so can cause damage to the motor
seals. When disconnecting, always disconnect fan pressure, then motor return, and case
drain last.
ALWAYS Connect ALWAYS Disconnect
Case Drain First Fan Pressure First
Motor Return Second Motor Return Second
Fan Pressure Last Case Drain Last
Power beyond pressure and load sense connections are also required for Great Plains 3PYP
planters equipped with hydraulic steering. The power beyond pressure connection supplies
flow when required for the steering circuit. The load sense line determines when and how
much flow is required for the steering circuit. When no flow is required, (i.e. when driving
straight or above speed of 8 mph), the system goes into low pressure stand-by mode to
reduce hydraulic heating and lessen tractor horsepower draw. The tractor must be turned off
before making these connections.
Case Drain
This connection is required to carry the fan motor case internal leakage and steering
pilot return flow directly to the tractor hydraulic reservoir (sump) with zero pressure.
The case drain oil serves to lubricate and cool motor components not directly exposed
to the working oil. Great Plains supplies a 3/8” body size ISO 16028 zero pressure flat
face case drain male coupler on a 1/4” hydraulic hose for the fan/steering case drain
line. It is normal to have seepage from this fitting when disconnected from the tractor to
protect the motor seals from thermal expansion. If the tractor is not equipped with a
female flat face case drain coupler, then it must be sourced through a tractor dealer or
hydraulic supplier.
3/4-16
FORB
0.777”0.5”
0.26”
NOTE: Dimensions are for reference only. Not exact size.
0.72”
Great Plains
P/N 841-099C
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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Explanation - Continued
Motor Return
This connection is required to carry the low pressure return oil from the fan motor and steering
valve return flow to the hydraulic reservoir or charge circuit. Using a motor return port prevents
accidental reverse operation and possible flow checking of the return SCV coupling. Great
Plains supplies a 3/4” body size ISO 7241-1 Series A male and female coupler with each
3PYP planter . The male coupler is installed on the 1/2” return hydraulic hose from the factory.
The mating female coupler must be connected to the tractor motor return port. The motor
return hose and couplers are large to reduce back pressure to the motor.
NOTE: Fan Motor/Steering Return and Steering Power Beyond Pressure have the same
size couplers.
DO NOT confuse these two connections or damage to the fan motor will occur.
1.38”
1.06”
1.125”
1-1/16-12
FORB
NOTE: Dimensions are for reference only. Not exact size.
Great Plains P/N
811-069C
sold through Great Plains as pair only
1-1/16-12
FORB
Power Beyond Pressure
This connection is required to supply flow to the steering circuit. Great Plains supplies a
3/4” body size ISO 7241-1 Series A male and female coupler with each 3PYP planter. The
male coupler is installed on the 1/2” power beyond pressure hydraulic hose from the factory .
The mating female coupler must be connected to the tractor power beyond pressure port.
The tractor must be turned off before making this connection.
NOTE: Fan Motor/Steering Return and Steering Power Beyond Pressure have the same
size couplers. DO NOT confuse these two connections or damage to the fan motor will occur.
Load Sense
The load sense line signals the tractor hydraulic pump when flow is required for the power
beyond pressure. Great Plains supplies a 1/4” body size male and female coupler with
each 3PYP planter. The male coupler is installed on the 1/4” load sense hydraulic hose
from the factory. The mating female coupler must be connected to the tractor load sense
port. The tractor must be turned off before making this connection.
9/16-18
FORB
1/2”
27/32”
9/16-18
FORB
1-1/16”
Great Plains
P/N 841-466C
Great Plains
P/N 841-457C
NOTE: Dimensions are for reference only. Not exact size.
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
9/16”
Great Plains
P/N 841-467C
(as pair)
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Tractor Requirements
Tractors connected to 3PYP planters must meet each of the following requirements:
1. LS Closed or PC Closed hydraulic systems with power beyond
connections which include case drain, motor return, power
beyond pressure, and load sense. Open Center hydraulic
systems MUST NOT be used.
NOTE: Load sense is not required with PC Closed hydraulic
systems and the load sense line on the planter steering manifold
must be removed and the port plugged. See Removing Planter
Steering Manifold Load Sense Line in this guide.
2. Three point hitch with minimum lift capacity of 16,000 pounds.
3. Minimum 220 drawbar Hp.
4. Capability of minimum 13,000 pounds at the front wheels.
Verify the specifications of the tractor with a tractor dealer . Articulated tractors are not compatible
with 3PYP planters equipped with steering.
Tractors Equipped with PC Close Hydraulic Systems
Tractors with PC Closed hydraulic systems will not have a load sense connection. The load
sense line on the planter steering manifold must be removed and the port must be plugged.
See Removing Planter Steering Manifold Load Sense Line in this guide.
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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Tractors Equipped with Additional Accessories
Connected to Power Beyond
Some tractors may be equipped with additional accessories that connect to power beyond
connections on the rear of the tractor (i.e. auto steering). If the tractor power beyond connections
are already in use, then there are exceptions that need to be followed for the particular type of
tractor hydraulic system before tee’s are installed for case drain, motor return, power beyond
pressure, and load sense connections.
Determine the type of closed center hydraulic system and use the information provided for each
type before connecting.
LS Closed with Load Sense Active
Tractors with this system must have a shuttle valve installed in the load sense line to be
compatible with the 3PYP. The shuttle valve is required to determine which component
requires and receives hydraulic pressure. Order and install load sense shuttle valve kit
401-715A, instructions are included in the kit. Once the load sense shuttle valve kit is
installed, then the case drain, motor return, and power beyond pressure connections can
be tee’d to add connections.
planter steering
manifold load
sense line
load sense
shuttle valve kit
P/N 401-715A
to other auxiliary function
to tractor load sense
LS Closed with Load Sense By-Passed
If the load sense has been internally by-passed, then the load sense line on the planter
steering manifold must be removed and the port must be plugged. See Removing Planter
Steering Manifold Load Sense Line in this guide. Consult a tractor dealer for verification
if the load sense has been internally by-passed. Case drain, motor return, and power
beyond pressure can be tee’d. This system will not utilize a load sense connection.
PC Closed Hydraulic System
This tractor hydraulic system will not have a load sense connection. The load sense line
on the planter steering manifold must be removed and the port must be plugged. See
Removing Planter Steering Manifold Load Sense Line in this guide. Case drain, motor
return, and power beyond pressure can be tee’d to add connections.
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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Removing Planter Steering Manifold Load Sense Line
The load sense line must be removed from the planter steering manifold when:
• Connecting to a tractor with a PC Closed hydraulic system.
OR
• Connecting to a tractor with an LS Closed hydraulic system that
has the load sense internally by-passed.
Remove the load sense hose and elbow from the “LS” port on the planter steering manifold. Plug
the “LS” port with 9/16-18 MORB plug (Great Plains P/N 81 1-675C). Keep the hose and elbow
for use when the planter is connected to a tractor with active load sense.
“LS” Port
planter
steering
manifold
LS
If tractor load sense is
internally by-passed, then
remove hose and elbow.
Install plug (P/N 81 1-675C).
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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