Great Plains NP4000B Operator Manual - Manual (Page 58)

54 2013+ NP4000/A/B Table of Contents Index Great Plains Manufacturing, Inc.
417-199M Table of Contents Index 2014-05-14
Lower While Folded
These steps presume that the intention is parking or
storage, on lift-assist locks and parking stands.
1. Verify that the lift lock channels are installed on the
lift-assist cylinders (page 50).
2. Verify that the wing lock pins are installed. Wings
unfold during lower if these pins are not in place.
3. Extend the fold/lift circuit to lower the lift-assist
cylinders onto their locks.
4. Raise the tractor three-point hitch until the applicator
mainframe is level front-to-rear, or the front is slightly
higher than the rear. Set the hitch circuit to Neutral.
Shut off the tractor.
5. Deploy the parking stands. Pin them so that the
frame will be level when lowered onto the stands.
6. Start the tractor. Lower the tractor hitch until the
applicator is supported by the parking stands.
Lower While Unfolded
These steps presume that the applicator is presently
folded with lift-assist lock channels installed, and parking
stands deployed, and that the intention is to park, store
or service the applicator. For field lower and field
adjustments, see topic “Field Lower” following.
1. Perform a Lower While Folded operation (page 54).
2. Set the lift/fold/circuit to Neutral or Float.
3. Remove the wing lock pins (page 50).
Refer to Figure 29
4.
Set the FOLD / FIELD switch to
FOLD / UNFOLD
This arrests unfolding at wings-level.
5. Extend the fold/lift wing to unfold the wings, until
wings-level.
6. To keep all coulters off the ground when unfolded
and lowered, crank the gauge wheels to full
extension (page 91).
7. If the tractor hitch is raised, lower it until the
applicator rests on the parking stands at front.
8. Set the FOLD / FIELD switch to
FIELD
This allows the wings to move below level.
9. Extend the fold/lift wing to further unfold the wings
until the gauge wheels touch the ground, then set the
circuit to Float (to relieve pressure at hitch hoses).
Note: The counterbalance valve holds the inner wings at
their current position.
10. Set the FOLD / FIELD switch to
PARK
Tip-Over and Crushing Hazard:
Never unhitch without using parking stands, particularly while
folded. A folded applicator without parking stands deployed
may tip forward immediately upon unhitching. Anyone at the
hitch or in the tractor could be seriously injured or killed. The
tractor cab may be crushed.
Equipment Damage Risk:
Although it is possible to fully lower the applicator while
folded, this is not recommended. This can place the full weight
of the machine on the center coulters, exceeding their spring
capability.
Note: If wing lock pins are installed, the FOLD / FIELD
switch may be in any position for lowering while
folded.
Figure 29
Switch for Unfolded Parking
34918