Great Plains 3PYPA Operator Manual - Manual (Page 113)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 109
03/20/2012 Table of Contents Index 401-647M
Wheel Sensor Calibration
The planter must be completely connected to the tractor,
and leveled, before beginning the procedure. You need a
reasonably level area large enough for completely turn-
ing and straightening the rig.
Refer to Figure 131 and the table on page 108
1.
Raise the planter. Folding is also suggested if the
test area is small, or uneven enough to cause wing
openers to touch the ground.
2. Ensure the hydraulic steering ECU is connected to
the cab switch box, and powered-up (switch
).
Caster Right Calibration
3.
Put the steering in caster wheel sensor calibration
mode, by setting Calibration switch
to the
“CASTER” position.
Note: Do not move the Calibration toggle switch from the
“CASTER” position until step 10, or the new caster
calibration is ignored.
4. Make a complete forward right circle, as tight as the
rig permits, with all wheels in a hard right turn.
Stop.
5. Press and hold the “learn” button on the switch
box, until the LEARN indicator flashes. Normally.
the illumination response takes less than a second.
Steering Mismatch Risk:
Do not press the LEARN button more than once for each orien-
tation (right, straight, left). If pressed more than once, invalid
steering data is stored. You must re-start the sequence (see
“Errors and Re-Tries”).
Caster Straight Calibration
6.
Drive straight forward until the entire rig is running in
a straight line. Stop, with all wheels straight ahead.
7. Press and hold the “learn” button on the switch
box, until the LEARN indicator flashes.
Caster Left Calibration
8.
Make a complete forward left hand circle, as tight as
the rig permits, with all wheels in a hard left turn.
Stop.
9. Press and hold the “learn” button on the switch
box, until the LEARN indicator flashes.
10. Complete the caster wheel sensor calibration mode,
by setting Calibration switch to “OFF”.
Wheel Tractors and Alternate Method for Track
Tractors (APPLIES ONLY TO PLANTERS WITH
s/n B1027J+)
Tractor Right Calibration
11. Put the steering in tractor wheel sensor calibration
mode, by setting Calibration switch to the “TRAC-
TOR” position.
Note: Do not move the Calibration toggle switch from the
“TRACTOR” position until step 18, or the new
tractor calibration is ignored.
12. Make a complete forward right turn, as tight as the
rig permits, with all wheel in a hard right turn.
Stop.
13. Press and hold the “learn” button on the switch
box, until the LEARN indicator flashes.
Steering Mismatch Risk:
Do not press the LEARN button more than once for each orien-
tation (right, straight, left). If pressed more than once, invalid
steering data is stored. You must re-start the sequence (see
“Errors and Re-Tries”).
Tractor Straight Calibration
14. Drive straight forward until the entire rig is running in
a straight line. Stop, with all wheels straight ahead.
15. Press and hold the “learn” button on the switch box,
until the LEARN indicator flashes.
Tractor Left Calibration
16. Make a complete forward left turn, as tight as the rig
permits, with all wheels in a hard left turn.
Stop.
17. Press and hold the “learn” button on the switch
box, until the LEARN indicator flashes.
18. Complete the tractor wheel sensor calibration mode,
by setting Calibration switch to “OFF”.
Errors and Re-Tries
If you are unable to complete a sequence, set the Cali-
bration switch
to “OFF”, and restart the calibration
sequence from the beginning (step 3 for caster or
step 11 for tractor). Do not attempt to start from where
you left off.
If you need to re-try a sequence (for example, you run
out of room to complete a circle or straight run), set the
Calibration switch
to “OFF”, reposition the rig and
begin again.
It is not necessary to re-calibrate caster steering, if only
the tractor steering needs to be re-done.
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