Great Plains PH-20 Predelivery Manual - Manual (Page 20)

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Section 3 Setup
PFH-15 and PFH-20 Precision Fertilizer Hitch 148-365Q 2/20/2006
Great Plains Mfg., Inc.
Hooking Up Hydraulic Hoses
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.
To distinguish hoses on the same hydraulic circuit, refer to
plastic hose holder. See Figure 3-7. Hose under extend-
ed-cylinder symbol feeds cylinder base ends. Hose under
retracted-cylinder symbol feeds cylinder rod ends.
Figure 3-7
Hydraulic Hose Color Ties
NOTE: If your implement is equipped with the optional
Coulter Command system, refer to Coulter Command
Hookup, page 18, for instructions on hydraulic hookup.
1. Connect hydraulic hoses from tongue cylinder to one
set of tractor outlets.
2. Connect hoses from transport-lift cylinders to another
set of tractor outlets.
3. Connect hoses from optional markers to a third set of
tractor outlets.
Coulter Command Hookup
1. Adjust tractor flow-control valve so flow rate is be-
tween 8 and 12 gpm.
2. Set Coulter Command to open-center or closed-cen-
ter mode, depending on your tractor hydraulics. If you
are not familiar with your tractor hydraulics, contact
your tractor dealer.
• Closed Center: Turn knob on Coulter Command
valve completely clockwise.
• Open Center: Turn knob on Coulter Command valve
completely counterclockwise.
Color Hydraulic Function
Red Tongue Cylinder
Blue Transport Lift Cylinders
Orange Marker Cylinders
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Figure 3-8
Set Coulter Command Valve
NOTE: On tractors with open-center hydraulics, use pop-
pet-style couplers on hydraulic hoses to reduce oil heat-
ing. See Figure 3-9.
Figure 3-9
Poppet-Style Coupler for Open-Center Systems
3. Connect transport-lift hoses from valve on side of
hitch frame to one set of tractor outlets. If one of your
hydraulic circuits is designated priority, connect trans-
port-lift hoses to this circuit.
4. Connect hoses from tongue-cylinder hoses from valve
on top of hitch frame to another set of tractor outlets.
Lock hydraulic lever for this circuit for continuous oil
flow.
John Deere tractors with Sound-Gard ® Body: Use
lever lock clip, John Deere part number R52667, to
lock lever forward. See your tractor dealer for clip pur-
chase and installation.
John Deere 7000 Series tractors: Rotate valve
detent selector to motor position to lock lever in for-
ward position.
John Deere 8000 Series tractors: Set timer to con-
tinuous. Push lever forward until detent clicks.
Case-IH Magnum tractors: Lock lever forward in
detent position. You may need to turn up detent pres-
sure to its maximum setting. Do not tie hydraulic lever
past detent position with a strap. See your tractor
dealer for hydraulic-system details.
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