MacDon FlexDraper FD1 Series Operator's Manual page 121

Table 3.18 Reel Height Sensor Voltage Limits
Combine Type
Case/New Holland
CLAAS
John Deere
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.
1. Engage the combine parking brake.
2. Start the engine and fully lower the reel.
3. Use the combine display or a voltmeter (if measuring
the sensor manually) to measure voltage range Y. Refer
to Table 3.18, page 97
4. If using a voltmeter, measure the voltage between the
ground (Pin 2 wire) and the signal (Pin 3 wire) at the
reel height sensor (B).
5. Stop the engine and remove key.
6. Adjust length of threaded rod (A) to modify voltage
range Y.
7. Repeat checking and adjusting until voltage range Y is
within the range specified.
8. Start the engine, and fully raise the reel.
9. Use the combine display or a voltmeter (if measuring
the sensor manually), to measure voltage range X.
Refer to Table 3.18, page 97
10. If using a voltmeter, measure the voltage between the
ground (Pin 2 wire) and the signal (Pin 3 wire) at the
reel height sensor (A).
11. Stop the engine and remove the key.
12. Loosen two M5 hex nuts (B) and rotate sensor (A) to
achieve voltage range X.
13. Repeat checking and adjusting until voltage range X is
within the range specified.
14. Start the engine and fully lower the reel.
214683
for range requirements.
for range requirements.
OPERATION
X Voltage
0.5–0.9 V
4.1–4.5 V
4.1–4.5 V
Figure 3.100: Reel Height Sensor – Right Reel
Arm (Reel Down)
Figure 3.101: Reel Height Sensor – Right Reel
Arm (Reel Up)
97
Voltage Range
Y Voltage
4.1–4.5 V
0.5–0.9 V
0.5–0.9 V
A
B
B
A
Revision A