Steering troubleshooting – Great Plains 3PYPA Predelivery Manual User Manual
Page 65
Great Plains Manufacturing, Inc.
Tractor Steering
61
2012-08-08
401-647Q
Track Tractor Preferred Method of Tractor Steering Sensor Calibration
19. Turn the Ignition Switch to the ON position. DO NOT
START the ENGINE.
20. Put the Steer Toggle switch to the ON position. The
power light on the steering switch box and the LED’s
on the electronic steering module should all be
illuminated.
21. Put the steering in the tractor sensor calibration
mode by setting Calibration switch
to the
TRACTOR position.
Note: Do not move the Calibration toggle switch from the
TRACTOR position until step 28 or the new tractor
calibration is ignored.
22. Turn the steering wheel all the way to the right and
hold in this position to simulate a hard right hand
turn.
23. Press and hold the LEARN button
on the switch
box until the LEARN indicator
flashes.
24. Release the steering wheel. It should return to the
center position.
25. Press and hold the LEARN button
on the switch
box until the LEARN indicator
flashes.
26. Turn the steering wheel all the way to the left and
hold in this position to simulate a hard left hand turn.
27. Press and hold the LEARN button
on the switch
box until the LEARN indicator
flashes.
28. Complete the tractor sensor calibration mode by
setting Calibration switch
to OFF. Only at this point
are the new calibration values accepted by the
system.
Steering Troubleshooting
See Operator manual for general planter
troubleshooting.
Always check any steering switch box flash error codes
before searching for other causes of problems.
See Operator manual for switch box operations.
Then see “Steering Flash Error Codes” on page 63.
The chart below presumes that the switch box is
reporting normal operation.
4
5
6
5
6
5
6
4
Steering Troubleshooting (other than flash error codes)
Problem
Cause
Solution
Any
Most that cannot be corrected in
place
If the planter must be moved for repairs, make ONLY
careful forward moves unless caster pins are removed (see
Operator manual).
Casters turn
abruptly at
system
power-up
This is normal if the tractor steering
at hitching is substantially different
from that at unhitching
Keep all persons away from casters at power-up. Allow no
one on the walkboard at power-up.
Note: To minimize caster movement at power-up, unhitch
and re-hitch with the tractor steering in a consistent
orientation, usually straight ahead.
No steering
Hydraulic hoses not connected
Correctly connect steering hydraulics.
Steering sense line not connected
Correctly connect steering hydraulics.
Power-Beyond hoses reversed
Correctly connect steering hydraulics.
Power-Beyond sense line
disconnected
Correctly connect steering hydraulics.
No pressure at Power-Beyond port
Unless there is a valve for the port, that is shut off, this is a
tractor system malfunction
Steering manifold valve malfunction
Have dealer check solenoid coils and plungers.
Tractor sensor failed (other than
open circuit or short to ground)
Check for obvious mechanical problems (such as loose
fasteners). Replace failed or damaged sensor.
Caster sensor failed (other than
open circuit or short to ground)
Check for obvious mechanical problems (such as loose
fasteners). Replace failed or damaged sensor.