Great Plains Power Beyond - Manual (Page 4)

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PB 01/03/11
Great Plains Manufacturing reserves the right to make changes or to add improvements to this guide at any time without notice or obligation.
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.
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.
ii
1-1/16-12
FORB
1.38”
1.06”
1-1/16-12
FORB Great Plains P/N
811-069C
sold through Great Plains as pair only
NOTE: Dimensions are for reference only. Not exact size.
1.125”
9/16-18
FORB 1/2”
27/32”
9/16”
NOTE: Dimensions are for reference only. Not exact size.
1-1/16”
Great Plains
P/N 841-467C
Great Plains
P/N 841-466C
Great Plains
P/N 841-457C
(as pair)
9/16-18
FORB