Lycoming TEO-540-C1A Maintenance Manual page 362

B. Release any clamps from the ignition lead to be removed.
C. Disconnect the spark plug connector from the spark plug of the ignition lead to be removed.
D. Remove the bolt, lock washer, and washer from the coil assembly of the lead to be removed.
Discard the lock washer.
E. Slide the coil assembly horizontally towards the center of the coil box bottom half to let the
coil assembly slide out of the silicone seal on the ignition lead. Remove the harness
connector from the coil assembly if necessary.
NOTICE: The Spark Plug Wire Nut Special Socket (ST-535) (Figure 3) is used by placing tool
with the ignition lead through the open side of the socket so the socket end of the
tool can engage on the ignition lead nut (Figure 4).
Use care not to kink or damage the ignition lead when turning the ignition lead nut
with the ST-535.
F. Use the Spark Plug Wire Nut Special Socket (ST-535) to unscrew the ignition lead from the
lower half of the coil box.
Figure 3
Spark Plug Wire Nut Special Socket (ST-535)
74-20
Page 332
Ignition Leads
Ignition Lead ID
1T A065
2T A072
3T A067
4T A074
5T A069
6T A076
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Ignition Lead Through the Open Side of ST-535
Table 1
Ignition Lead
1B
2B
3B
4B
5B
6B
© 2018 Avco Corporation. All Rights Reserved
Figure 4
ID
A066
A071
A068
A073
A070
A075
November 2018