Great Plains NP30A 30-foot Operator Manual - Manual (Page 128)

124 NP30A or NP40A Table of Contents Index Great Plains Manufacturing, Inc.
407-502M Table of Contents Index 2014-05-20
Wing Leveling
Before checking wing level, check that the center section
is level left to right (“Rear Eyebolt Adjustment”). On
2-point and Pull-Type, rear eyebolts above the rear
casters can affect left-right level if out of adjustment.
Wing Level: 2/3-Point
On 2-Point and 3-Point applicators, wing level is
controlled entirely by gauge wheel height. If wings are
not running level, adjust gauge wheels.
Wing Level: Pull-Type
On Pull-Type applicators, wing level is controlled by the
lift cylinders and the top eyebolt.
If wings get out of level, perform re-phasing operations
(page 50) until the lengths of the exposed rods are
identical across the applicator.
If the wings are still not level, check that the eyebolt
reveal is still at the factory setting (or is at least identical
at all eyebolts).
Refer to Figure 93
The factory setting is a distance of:
3.5 in. (8.9 cm)
from the end of the eyebolt to the top face of the gauge
wheel lug tube.
To adjust the eyebolt, loosen the hose guide nut and
jam nut . Rotate the adjust nut to set bolt reveal.
Tighten jam nut.
Rear Eyebolt Adjustment
On 2-point and Pull-Type applicators, side to side level at
rear is controlled by eyebolts at the lift cylinder bases. On
2-point, rear height is set by spacers (page 38).
On Pull-Type, rear height is controlled by the cylinders,
slaved to the hydraulic depth stop valve on the left wing.
Check that both eyebolts are set to the same reveal .
On Pull-Type, check front to back level (after re-phasing)
at full lift on level ground. If front eyebolts have been
changed from their factory settings, adjust the rear
eyebolts to bring the frame back into front-back level.
Refer to Figure 94
The factory setting is a distance of:
4.5 in. (11.4 cm)
from the end of the eyebolt to the top face of the lug tube.
To adjust the eyebolt, loosen the hose guide nut , then
the jam nut . Rotate the adjust nut to set bolt reveal.
Check that the hose loop is on top.
Tighten jam nut , then hose guide nut .
Figure 93
Forward Lift Eyebolt
31724
1
3
4
2
1
Figure 94
Rear Lift Eyebolt
31622
5
3
4
6
2
2
3 4
5
5
2
3 4
6
3 2