MacDon FD75 OM - Manual (Page 82)

OPERATION
2. Press the HEADER CONTROL button (A). The
HEADER CONTROL page appears. You can adjust
sensitivity on this page using the up and down arrows.
Figure 4.55: Combine Display
3. Adjust the sensitivity to the maximum setting.
4. Activate the AHHC, and press the header lower button
on the control handle.
Figure 4.56: Combine Display
5. Decrease the sensitivity until the feeder house remains
steady and does not bounce up and down. This is
the maximum sensitivity and is only an initial setting.
The final setting must be made in the field as the
system reaction will vary with changes in surface and
operating conditions.
6. If a maximum sensitivity is not needed, a less sensitive
setting will reduce the frequency of header height
corrections and component wear.
Partially opening
the accumulator valve will cushion the action of the
header lift cylinders and reduce header hunting.
Case IH 2300/2500 Combines
Engaging the Auto Header Height System (Case IH 2300)
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.
To engage the Auto Header Height system, follow these steps:
169894 68 Revision A