Adjusting The Sensitivity Of The Auto Header Height Control (Ahhc) (Gleaner R65/R66/R75/R76 - MacDon FlexDraper FD1 Series Operator's Manual

Combine header

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Table of Contents

1. Ensure the header is in auto header height control

(AHHC) mode. This is indicated by the AUTO MODE

LED light (A) displaying a continuous, solid light.

2. The header will lower to the height (ground pressure)

corresponding to the position selected with the height

control knob (B). Turn the knob counterclockwise for

minimum ground pressure, and clockwise for maximum

ground pressure.

Adjusting the Sensitivity of the Auto Header Height Control (AHHC) (Gleaner R65/R66/R75/R76

and Pre-2016 S Series)

Changes may have been made to the combine controls or display since this document was published. Refer to the

combine operator's manual for updates.

Figure 3.276: Auto Header Height Control Console

The SENSITIVITY ADJUSTMENT dial (A) controls the distance the cutterbar must travel up or down before the

AHHC reacts and raises or lowers the feeder house.

When the SENSITIVITY ADJUSTMENT dial (A) is set to maximum (turned completely clockwise), only small

changes in ground height are needed to cause the feeder house to raise or lower. In this position, the cutterbar

Figure 3.275: AHHC Console