MacDon R85 Operator's Manual page 162

1. Loosen bolts (A) and remove the cover (B).
2. Disconnect the sensor wire from the header wiring
harness at connector (A).
3. Remove bolt through clip (B).
4. Pull the harness through grommet and into the
drive compartment.
5. Remove nut and bolt (C) securing sensor (D) to bracket
and remove the sensor.
6. Install the new sensor (D) onto the bracket with bolt and
nut (C). Ensure sensor is aligned with the pulley rim.
7. Check that gap between sensor and pulley is 0.08 in.
(2 mm). Adjust as required.
8. Route connector and harness through hole in the frame
and through grommet in cover.
9. Connect sensor wiring to existing connector (A).
10. Reinstall cover (B) and secure with bolts (A).
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Figure 7.79: Gearbox Cover
Figure 7.80: Gearbox Speed Sensor
Figure 7.81: Gearbox Cover
Revision F