MacDon FFT FlexDraper FD75 - Replacing John Deere Sensor

MAINTENANCE AND SERVICING
2. Cut cable tie (A) securing harness to cover.
3. Remove screws (B) and remove sensor (C) and
harness. Bend cover (D) (if nec es sary ) to remove
harness.
4. Feed wire of new sen so r be h ind cover (D ) thro ug h
chain cas e.
5. Locate new sensor in support (E) and attach with two
screws (B).
6. Adjust gap between sensor disc (F) and sensor (C) to
0.02 in. (0.5 m m).
Figure 5.286: Speed Sensor
7. Connect to harness at (A).
IMPORTANT:
Ensure sensor electrical harness does NOT contact
chain or sprocket.
8. Reinstall cover. Refer to Insta lling Drive Cover, page
388.
Figure 5.287: Electrical Harness
Replacing John Deere Se nsor
To repl
ace the reel speed sensor for a John Deere combine, follow these steps:
1. Discon
nect connector (D).
2. Remov
e top nut (C) and remove sensor (B).
3. Remov
e top nut from new sensor a nd position sen so r
in sup
port. Secure with top nut (C).
4. Adju
st gap between sensor disc (A) and sensor (B) to
1/8 i
n. (3 mm) with nut (C).
5. Conn
ect to harness at (D).
IMPORTANT:
Ensure sensor electrical harness does NOT contact
chain or sprocket.
6. Rei
nstall cover. Refer to Installing Drive Cover, p age
388.
Figure 5.288: Speed Sensor
147695 390 Revision A