MacDon FD75 OM - Manual (Page 100)

OPERATION
Figure 4.94: Auto Header Height Control Console
The sensitivity adjustment dial (A) is used to control the distance the cutterbar travels (moves up or down) in relation
to the header frame (flex head) or header in relation to ground (rigid or corn head) before the control module activates
the hydraulic valve to raise or lower the header frame.
When the sensitivity adjustment dial (A) is turned completely clockwise, the control module is set to the “MOST”
sensitive position. In this position, the cutterbar typically only moves up and down a distance of approximately
3/4 in. (19 mm) before the control module activates the hydraulic control valve to raise or lower the header frame.
When the sensitivity adjustment dial is turned completely counterclockwise, the control module is set to the “LEAST”
sensitive position. In this position, the flex head cutterbar can move up and down approximately 2 in. (51 mm)
before the control module activates the hydraulic control valve to raise or lower the header frame. The “HEADER
SENSE LINE” input changes the range of the sensitivity sensor as well. Connected to a draper, the counterclockwise
position (least sensitive) allows for approximately 4 in. of vertical travel before correction is initiated.
Diagnostics (Gleaner R65/R75)
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.
169894 86 Revision A