MacDon FlexDraper FD75 - Gleaner R65;R66;R75;R76 and S Series Combines - Except S9 Series; Checking Voltage Range from Combine Cab - Gleaner R65;R66;R75;R76 and S Series

214323 195 Revision B
4.12.3 Calibrating Auto Header Height Control – Gleaner
®
R65/R66/R75/R76 and
S Series
The auto header height control (AHHC) sensor output must be calibrated for Gleaner
®
R65/R66/R75/R76 and non-S9
S Series combines, or the AHHC feature will not work properly.
NOTE:
The calibration procedure should be performed on flat, level ground without the header clutches engaged. The header
height and header tilt settings must NOT be in auto or standby mode. The engine rpm must be above 2000 rpm. The
header tilt option on 2004 and earlier model combines does NOT work with MacDon headers. This system will have to be
removed and disabled in order to calibrate the AHHC system. Refer to the combine operator’s manual for instructions.
To set up the AHHC system on Gleaner
®
S9 Series combines, refer to 4.13 Gleaner
®
S9 Series Combines, page 202.
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.
1003586
A
B
C
D
E
F
G
Figure 4.134: Combine Auto Header Height Controls
A - AUTO MODE Button B - AHHC Light C - CAL1 Button
D - Raise Header E - Lower Header F - Auto Mode
G - CAL2 Button
NOTE:
To ensure the best performance of the AHHC system, 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.
1. Ensure that the center-link is set to D.
2. Press AUTO MODE button (A) until AHHC light (B) is activated.
3. Press and hold CAL1 button (C) until the following lights flash: raise header (D), lower header (E), tilt auto mode (F),
and AHHC (B).
AUTO HEADER HEIGHT CONTROL