Great Plains NP3000A Operator Manual - Manual (Page 176)

172 NP3000 and NP3000A Table of Contents Index Great Plains Manufacturing, Inc.
407-613M Table of Contents Index 2014-04-22
Shift 2-Point Hitch
Refer to Figure 103
The front tool bar of the forward sub-frame has stop keys
for the standard (pre-emergence) hitch position
and
for the side dress hitch position .
27. Loosen or remove the nuts at all four hitch
U-bolts.
28. Move each hitch to align the left edge of the bolt
plate with the left stop keys on the frame.
29. Tighten nuts to 3 ⁄
4
-10 Grade 5 torque specification.
Re-Space Caster Pivots
Caster Angle Adjustment (s/n C1017A+)
For s/n C1016A-, see page 173.
Refer to Figure 104 and Figure 105
Your operations may require that the lift-assist tires be
in-row (on 90 inch centers) or out-of-row (on 120 inch).
Post-emergence (side-dress), for example, requires
out-of-row placement. The forward caster parallel arm
weldments may be pivoted and pinned for either spacing.
90 Inch (In Row) Spacing
With the caster pins the through leading outside holes
of the lift assist frame, and through the outside tubes of
the forward caster pivot weldment, the caster arms are in
straight trail, and provide a 90 inch (2.29 m) wheel
spacing. The wheels are directly behind 30 inch rows.
120 Inch (Out of Row) Spacing
With the caster pins the through inside holes
of the lift
assist frame, and through the inside tubes of the forward
caster pivot weldment, the caster arms are angled out,
and provide a 120 inch (3.05 m) wheel spacing. The
wheels are in between 30 inch rows.
Loss of Control and Machine Damage Risks:
Never operate with one or both pins removed, or with pins
installed but not in a caster weldment tube. Always install
pin
from the top, in case the cotter is lost. If the caster arms
are free to pivot at both ends, they can strike other implement
components, and directional control is substantially reduced.
This could contribute to a road accident, resulting in serious
injury or death.
Figure 103
Hitch Shift
31844
13
2
3
2
3
53
2
3
53
13
Note: Other configurations of the pins are not
recommended. In particular, it is not necessary to
set a wheel stance asymmetry for side-dress.
Figure 104
Caster Wheel Spacings
32356
90 inches
(2.29 m)
120 inches
(3.05 m)
1
2
1
1
2
3