Lycoming TEO-540-C1A Maintenance Manual page 368

Install the ignition lead into the lower half of the coil box (Figure 8). Tighten hand tight.
C.
Apply a light coat of lubricant (petrolatum or DC-4) to the mating surface of the coil
D.
assembly.
Install the coil assembly in the lower half of the coil box (Figure 8) and slide it horizontally
E.
into the ignition lead.
Install the bolt, new lock washer, and washer to attach the coil assembly to the lower half of
F.
the coil box. Torque the bolt to the specified limits in the Standard Torque Tables in the latest
revision of the Service Table of Limits - SSP-1776.
Apply torque seal to the coil assembly bolt.
G.
Use the Spark Plug Wire Nut Special Socket (ST-535) to torque the nut on the coil box end
H.
of the ignition lead (Figure 4) to 60 in.-lb. (6.8 Nm).
Install the coil box lid as per instructions in the "Coil Box Access" section in Chapter 74-30.
I.
Route the ignition leads to the appropriate spark plug position as indicated by the alpha-
J.
numeric markings on the coil box lid adjacent to each ignition lead.
Attach the spark plug connector end of the ignition lead to the spark plug.
K.
When the spark plug nut thread makes contact with the spark plug threads, push the ferrule
L.
against the spark plug while turning the spark plug nut clockwise.
Continue rotating the spark plug nut until it seats and is finger-tight, then tighten the spark
M.
plug nut one additional flat.
Install the ignition lead into the clamp and secure the clamp.
N.
Make sure the ignition lead connections are secure. Tighten the leads of any loose
O.
connections.
Make sure the ignition lead mounting clamps are tight.
P.
Make sure there are no kinks or bends in the ignition lead routing.
Q.
Close the coil box per the procedure in Chapter 74-30.
R.
74-20
Page 338
Figure 8
Coil Assembly and Ignition Lead
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TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
November 2018