MacDon FlexDraper FD75 - John Deere 50 Series Combines; Checking Voltage Range from Combine Cab - John Deere 50 Series

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4.14 John Deere 50 Series Combines
To make your header’s auto header height control system compatible with John Deere 50 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.
4.14.1 Checking Voltage Range from Combine Cab
To ensure that the auto header height control (AHHC) system on your header works correctly with your John Deere 50
Series combine, the output voltage from the header height control sensors must be verified.
1. Position the header 150 mm (6 in.) above the ground, and unlock the adapter float.
1001416
A
B
Figure 4.176: Float Lock
2. Ensure 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 the header is not on the down stops during next two
steps, the voltage may go out of range during operation
causing a malfunction of the AHHC system.
1003464
A
B
Figure 4.177: Float Indicator Box with Auto Header
Height Sensor
3. Pointer (A) on the float indicator box should point at 0.Ifit
does not point at zero, adjust cable take-up bracket (B)
until it does.
AUTO HEADER HEIGHT CONTROL