Great Plains NP4000 40-foot Operator Manual - Manual (Page 64)

60 NP4000 Table of Contents Index Great Plains Manufacturing, Inc.
407-776M Table of Contents Index 2012-03-28
Caster Angle Adjustment
Your operations may require that the lift-assist tires be
in-row or out-of-row. In-row spacing varies with basic
implement row spacing. Post-emergence (side-dress),
for example, typically requires out-of-row placement. The
forward caster parallel arm weldments may be pivoted
and pinned for wheel spacing.
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 the
caster pin from the top, in case 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 machine upset, a road accident,
serious injury or death.
Changing Spacing
Details of pin placement vary.
See page 61 for 2012+ models
See page 62 for 2011 models.
This is a two person operation. If the applicator frame is
not exactly level, the caster arms may be difficult to
control with one hand.
1. Hitch the applicator to a suitable tractor (page 22).
2. Raise the applicator. Move to a level, and firm or
hard surface.
3. While raised, remove any lift lock channel or spacers
on the lift-assist cylinder.
4. Lower the applicator until the caster tires are just out
of ground contact. Set the lift circuit to Neutral and
shut off the tractor.
5. Remove the hairpin cotter at a caster pin. Have one
person control caster position. Remove the pin.
6. Reposition the caster as desired for the new spacing.
Insert the pin. Secure with cotter. Repeat for other
caster.
Figure 42
Caster Wheel Spacings
34116
90 inches
(2.29 m)
120 inches
(3.05 m)
120
90