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Revision A
1003656
A
B
Figure 9.209: AHHC Console
1.
Ensure the header is in auto header height control (AHHC)
mode. This is indicated by 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 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
–
Gleaner R65/R66/R75/R76 and Pre-2016
S Series
NOTE:
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 9.210: Auto Header Height Control Console
1003657
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SENSITIVITY ADJUSTMENT dial (A) controls the distance the cutterbar must travel up or down before the auto header
height control (AHHC) reacts and raises or lowers the feeder house.
When 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 moves up and down
approximately 19 mm (3/4 in.) before the control module signals the hydraulic control valve to raise or lower the
header frame.