MacDon PW8 - Challenger 6 Combines; Checking Voltage Range from Combine Cab - Challenger 6 and 7 Series

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4.8 Challenger
®®
6 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. For instructions,
refer to the combine operator’s manual for updated information.
1. Raise the header until its wheels are 150 mm (6 in.) above the ground.
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Figure 4.88: Challenger
®®
Combine Display
2. Go to the FIELD page on the combine monitor and select
the diagnostics icon. The MISCELLANEOUS page appears.
3. Select VMM DIAGNOSTIC button (A). The VMM
DIAGNOSTIC page appears.
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Figure 4.89: Challenger
®®
Combine Display
4. Go to the ANALOG IN tab and select VMM MODULE 3 by
pressing the text box below the four tabs. The voltage from
the AHHC sensors is now displayed on the page as HEADER
HEIGHT RIGHT POT and HEADER HEIGHT LEFT POT. Both
readings should be identical.
AUTO HEADER HEIGHT CONTROL