MacDon FD70 for Combine Operators - Manual (Page 209)

SECTION 10. MAINTENANCE AND SERVICING
Form 169006
207
Revision D
D50 Speed Sensor
a. Maintain a 0.02 in. (0.5 mm) gap between sensor
disc (A) and sensor (B). Adjust by loosening
screws (C), and moving support (D) as required.
b. Tighten screws (C).
c. Replace sensor as follows:
1. Cut plastic ties (E) securing wire to support
and sensor.
2. Disconnect connector (F) located behind the
drive case, and cut plastic tie (G) securing
harness to hose.
3. Remove screws (H), and remove sensor (B)
and harness.
4. Feed wire of new sensor through hole in
case.
5. Locate new sensor in support (D), and attach
with two screws (H).
6. Adjust gap between sensor disc (A) and
sensor (B) to 0.02 in. (0.5 mm).
7. Connect to harness at (F).
8. Secure harness with plastic ties (E) and (G).
IMPORTANT
Ensure sensor electrical harness does
not contact chain or sprocket.
F
G
D50
A
B
D
H
E
C