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169
Revision A
4.12.3
Replacing Header Disc Speed Sensor
If the header disc sensor malfunctions or is damaged, use this procedure to replace it.
WARNING
To avoid bodily injury or death from unexpected startup of the machine, always stop the engine and remove the key
from the ignition before leaving the operator
’
s seat for any reason.
1.
Lower the header to the ground.
2.
Stop the engine, and remove the key.
3.
Open the left driveshield. For instructions, refer to
3.5.1 Opening Driveshields, page 42
.
10288181028818
A
B
C
D
E
Figure 4.194: Header Disc Speed Sensor
4.
Disconnect wire harness (A) from speed sensor
connector (B).
5.
Remove fir tree clip and cable tie (E). Retain the clip for
reinstallation.
6.
Loosen nut (C) from the end of the sensor and remove the
sensor from bracket (D).
7.
Remove the nut from the end of the new sensor, install the
new sensor into bracket (D) and secure with nut (C).
8.
Connect sensor wire (B) to harness (A).
NOTE:
Ensure wires are clear of the belt and pulley.
9.
Secure with fir tree clip (E) and the new cable tie.
1028823
A
B
C
D
E
Figure 4.195: Header Disc Speed Sensor
10. Adjust nuts (A) as required to achieve a 2
–
3 mm
(1/16
–
1/8 in.) gap (B) between sensor (C) and pulley (D).
Ensure the sensor face and pulley face are parallel. Bend
bracket (E) as required.
11. Tighten nuts (A) to 12 Nm (9 lbf·ft).
12. Close the left driveshield. For instructions, refer to
.
13. Start the windrower, engage the header, and check the
operation of speed sensor on the monitor. The sensor may
require re-calibrating. For instructions, refer to the
windrower operator
’
s manual.