Great Plains NP4000B Operator Manual - Manual (Page 97)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 93
2014-05-14 Table of Contents Index 417-199M
Adjust the weight transfer to achieve consistent coulter
depth, while keeping the wings level with the center
section. If insufficient weight is transferred, outside
(wing) coulters may run higher than center section. If too
much weight is transferred, center section may run high.
If adjusted when the tractor is cold, re-adjustment may
be required when the oil warms. Monitor the pressure
gauges during early field operations.
Refer to Figure 66
1.
In field conditions, unfold (page 56) applicator.
2. Set FOLD / FIELD to FIELD.
3. Lower applicator(page 51), and set or check
application depth (page 43).
4. Pull forward to put coulters in ground.
5. Put tractor in Park and set parking brake.
6. Set tractor to half throttle. Extend the fold/lift circuit
(unfold). Lock lever for continuous operation.
7. Adjust tractor flow control valve so the needle on the
bypass gauge
is in the green zone
(1000 to 1500 psi).
8. Release the lock disc .
9. Adjust the knob for an initial value of 800 psi on
the gauge . Tighten the lock disc.
10. Check that the bypass gauge is still in the green
zone. Adjust the tractor remote flow to correct.
Re-check the reading on the pressure-reducing
gauge
.
11. Observe applicator operation, and re-adjust
down-pressure as necessary after oil warm-up.
Repeat step 7 through step 10.
858-042C Rev. A
NOTICE
This machine is designed for continuous
hydraulic flow to the wing fold cylinders
during field operations. It is for use on
tractors having CLOSED CENTER
hydraulics only.
Engage the hydraulics (continuous flow) down. 1.
2. From the cab, adjust the flow so the needle
on the bypass gauge is in the green zone
1000 to 1500 PSI.
3. At the valve, adjust the valve to set your
initial down pressure.
If the wings run high during operation, increase
pressure. if the center runs high, decrease
pressure.
4.
SETTING DOWN PRESSURE VALVE
DOWN PRESSURE VALVE INSTRUCTIONS:
NUTRI-PRO ®
Figure 66
Weight Transfer Adjustment
34935
3
4
5
1
2
2
3
4
5
2
5