MacDon FlexDraper FD75 - Calibrating Auto Header Height Control - Case IH 7010;8010; 7120;8120;9120; 7230;8230;9230; 7240;8240;9240 - Software Versions below 28.00

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4.7.4 Calibrating Auto Header Height Control – Case IH 7010/8010; 7120/8120/9120;
7230/8230/9230; 7240/8240/9240 – Software Versions Below 28.00
The auto header height control (AHHC) sensor output must be calibrated for Case IH 7, 8, or 9 series combines with
software versions below 28.00, or the AHHC feature will not work properly.
For best performance from the auto header height control, perform these procedures with the center-link set to D. When
the setup and calibration procedures are complete, adjust the center-link back to the desired header angle. For
instructions, refer to 3.7.4 Header Angle, page 78.
NOTE:
This procedure applies to combines with a software version below 28.00. For instructions on calibrating the AHHC for
combines with software version 28.00 or above, refer to 4.7.5 Calibrating Auto Header Height Control – Case IH 7010/8010;
7120/8120/9120; 7230/8230/9230; 7240/8240/9240 – Software Versions Above 28.00, page 159.
NOTE:
Changes may have been made to the combine controls or the display since this document was published. Refer to the
combine operator’s manual for the most up-to-date information.
1. Ensure that the center-link is set to D.
2. Ensure that all header and adapter electrical and hydraulic connections are complete.
3. Select TOOLBOX on the MAIN page, and then select HEADER.
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Figure 4.56: Case IH Combine Display
4. Set the appropriate HEADER STYLE.
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A
B
Figure 4.57: Case IH Combine Display
5. Set the AUTO REEL SPEED SLOPE setting.
6. Set the HEADER PRESSURE FLOAT setting to NO (A) if
equipped, and ensure that the REEL DRIVE setting is set to
HYDRAULIC (B).
AUTO HEADER HEIGHT CONTROL