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488
Revision A
IMPORTANT:
To measure the output voltage of the reel height sensor, the combine engine needs to be running and supplying power to
the sensor. Always engage the combine parking brake and stay away from the reel.
Table 10.1 Reel Height Sensor Voltage Limits
Combine Type
Voltage Range
X Voltage
Y Voltage
AGCO IDEAL
™
Series
4.1
–
4.5 V
0.5
–
0.9 V
Case/New Holland
0.5
–
0.9 V
4.1
–
4.5 V
CLAAS
4.1
–
4.5 V
0.5
–
0.9 V
John Deere
4.1
–
4.5 V
0.5
–
0.9 V
NOTE:
For CLAAS combines: To avoid a collision of the reel with the cab, the machine is equipped with an automatic reel height
limitation. Some CLAAS combines have an automatic shutoff feature that engages when the automatic reel height
limitation is reached. When raising the header by more than 80 percent, the reel is automatically lowered. The automatic
lowering of the reel can be manually overridden, and a warning will appear on the CEBIS terminal.
To check the voltage range manually, follow these steps:
1.
Engage the combine parking brake.
2.
Start the engine and fully lower the reel.
1032249
A
B
C
Figure 10.2: Reel Height Sensor
–
Right Reel Arm with
Reel Down
3.
Use the combine display or a voltmeter (if measuring the
sensor manually) to measure voltage range
Y
. Refer to
Table
for range requirements.
4.
If using a voltmeter, measure the voltage between the
ground wire (pin 2) and the signal wire (pin 3) at the reel
height sensor (B).
5.
Shut down the engine, and remove the key from
the ignition.
6.
Adjust length of threaded rod (A) to modify voltage
range
Y
.
NOTE:
Dimension (C) is factory set to 41.7 mm (1.6 in).
7.
Repeat checking and adjusting until voltage range
Y
is
within the range specified.