MacDon PW8, Operator'S Manual

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Revision A
4.1.8 John Deere S and T Series Combines
Checking Voltage Range from Combine Cab (John Deere S and T Series)
The auto header height sensor output must be within a specific range, or feature will not work properly.
Combine Low Voltage Limit High Voltage Limit Minimum Range
John Deere S and T Series 0.7 V 4.3 V 3.0 V
Check sensor
’
s output voltage range from combine cab according to instructions that follow.
NOTE:
Changes may have been made to combine controls or display since this document was published. Refer to
combine operator
’
s manual for updates.
CAUTION
Check to be sure all bystanders have cleared the area.
1. Raise header until header wheels are 150 mm (6 in.) above ground.
2. Start combine and fully lower feeder house to the ground.
NOTE:
You may need to hold HEADER DOWN switch for a few seconds to ensure feeder house is fully lowered.
3. Check sensor reading on monitor.
4. If sensor voltage is not within low and high limits shown in 4.1.3 Height Sensor Output Voltage Range
–
Combine Requirements, page 102 , or if range between low and high limits is insufficient, you need to make
adjustments. For instructions, refer to Adjusting Header Height Sensor Voltage Range (Left Side), page 105
and Adjusting Header Height Sensor Voltage Range (Right Side), page 105 .
Calibrating Feeder House Fore-Aft Tilt Range (John Deere S and T Series)
This procedure applies only to model year 2015 and later John Deere S and T Series combines.
NOTE:
Changes may have been made to combine controls or display since this document was published. Refer to
combine operator
’
s manual for updates.
Figure 4.78: John Deere Hydro Handle
The feeder house fore-aft tilt is controlled by buttons (C)
and (D) at back of hydro handle.
AHHC SYSTEM