Great Plains 3PYP Predelivery Manual - Manual (Page 58)

54 3PYP
401-312Q 07/19/2011
Steering Calibration
Steering System Hydraulic Bleeding
The steering system is self-purging and never requires
bleeding if operated with all four hoses correctly con-
nected.
Calibration
The hydraulic steering system has two calibration
modes:
a. one for caster wheel sensor calibration
b. one for tractor wheel sensor calibration.
After initial wheel calibration at delivery of the planter,
periodic re-calibration is necessary in the following cir-
cumstances:
• Re-calibrate for use with a different tractor.
• Re-calibrate if maintenance required dismounting any
steering sensor, tire size or tractor tire size and/or
wheel arrangement has changed.
• Great Plains recommends seasonal re-calibration.
• Re-calibrate if steering software is updated.
Steering Configuration Switch
This cab-mounted switch box controls both normal and
field calibration of the hydraulic steering system. It has
2 switches, 1 button, three indicator lamps and one knob
that perform the following functions.
Steering Control Module Function Switch Positions and Indications
STEER Toggle Switch:
Steering System Power On (up): Steering enabled (casters match or float)
Off (down): Steering disabled (casters in Float)
LED:
Power / Fault On steady: Steering system active (casters match or float)
Blinking: Steering system fault (casters in Float)
FLOAT LED:
Float / Caster Off: Normal operation - steering system active if STEER on
On: Casters in Float (if STEER LED is steady)
CALIBRATION Toggle Switch:
Calibration Modes L: Caster aspect sensor (casters in Float)
C: Center-off: Calibration mode off (normal transport/field mode)
R: Tractor aspect sensor (casters in Float)
LEARN Button:
Calibration (Learn) First press: Learn tight Right turn
Next press: Learn Straight ahead
Next press: Learn tight Left turn
LED: Calibration Off: Normal (non-Calibration) operation
Dim: Either Calibration mode selected
Bright Flash: Button
press acknowledged
Rotary Switch Knob (backside) Vertical position: Normal operation - steering system active while
planting as well as raised
Horizontal position: Used when tractor is utilizing auto steer - steering
system floats while planting - active only when planter is raised
Null4:
Figure 95: Calibration
Steering Control Module
Front View(top) Rear View(bottom)
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