MacDon FlexDraper FD75 - Challenger Combines; Checking Voltage Range from Combine Cab - Challenger; And 7 Series

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4.8 Challenger
®
Combines
To make your header’s auto header height control (AHHC) system compatible with Challenger
®
6 Series combines, you
must set your combine’s header configuration options for the particular model of header, check the height sensor voltage
range, and calibrate the AHHC system to ensure that it is working correctly.
4.8.1 Checking Voltage Range from Combine Cab – Challenger
®
6 and 7 Series
To ensure that the auto header height control (AHHC) system on your header works correctly with your Challenger
®
6or7
Series combine, the output voltage from the header height control sensors must be verified.
The header’s height sensor output must be within a specific range for the AHHC system to work properly.
Check the range of the output voltage from the height sensors:
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.
1. Position the header 150 mm (6 in.) above the ground, and unlock the adapter float.
1001416
A
B
Figure 4.69: Float Lock
2. Ensure that the float lock linkage is on the down stops at
both locations. When the linkage is on the down stops,
washer (A) and nut (B) cannot be moved.
NOTE:
If header is on the down stops during the next two steps,
the voltage may go out of range during operation, causing a
malfunction of the auto header height control (AHHC)
system.
1003464
A
B
Figure 4.70: Float Indicator Box
3. Adjust cable take-up bracket (B) (if necessary) until
pointer (A) on the float indicator is on 0.
AUTO HEADER HEIGHT CONTROL