Great Plains EHPR Valve Calibration - Manual (Page 3)

Great Plains Mfg., Inc.
Calibration Procedure 3
12/10/2008 401-565M
EHPR Valve Calibration
Power-Up Steering System
Refer to Figure 3
1. Set the CALIBRATION switch to
center/Off.
2. Set the STEERING OVERRIDE switch to
down/OFF
3. Set the REVERSE STEER (Power) switch to
Up/ON
4. Confirm that only the power indicator is illumi-
nated.
5. Engage the hydraulic circuit for Fan/Steering.
6. Briefly toggle the STEERING OVERRIDE switch
to Up/ON to confirm:
circuit active
flow direction correct (fan rotation direction)
Connect HHCT
Refer to Figure 4
7. Before connecting the HHCT, set the
Valve Select switch
to
Center/OFF.
Refer to Figure 5
8. At the planter hitch, locate the calibration lead
from the ECU - it is a short (~18in) cable terminated
in a 12-pin plug.
9. Plug the HHCT cable receptacle into the calibration
cable plug.
IMPORTANT !
The calibration system is now live. Do not operate any
HHCT switches or buttons until instructed.
Figure 3
Steering Console
25242
1 2
3
6
7
5 4
3
2
1
4
2
Figure 4
833-510C HHCT Off
29197
1
1
Figure 5
Calibration Harness at ECU
29212
2
2