Coil Box Installation - Lycoming TEO-540-C1A Maintenance Manual

4. Coil Box Installation

WARNING MAKE SURE THE BATTERY HAS BEEN DISCONNECTED FROM THE
ENGINE.
A. Make sure the spacers (Figure 1) are installed on the coil box mounting studs.
B. Lift the engine harness and pass thru plate (Figure 3) and put the lower half of the coil box on
the mounting studs.
C. Install the engine harness and pass thru plate on the coil box base with the four screws, new
lock washers, and washers.
NOTICE: The harness connectors are identified for their respective coil assemblies.
D. Connect the 12 harness connectors to the respective 12 coil assemblies.
CAUTION
E. Use ignition lead tie-wraps to attach the harness to the clamp bases on the coil box base.
F. Make sure the ignition leads are not kinked, cracked, damaged or frayed.
G. Route the ignition leads to the corresponding spark plugs per instructions in Chapter 74-20.
H. Connect the ignition lead spark plug connectors to the corresponding spark plugs.
NOTICE: Make sure all bolts (Figure 2) are correctly torqued and all ignition leads are secured
before installing the coil box lid.
I. Install the coil box lid per instructions in the "Close the Coil Box" section in this chapter.
J. Install the ignition leads into the clamp from which they were removed. Secure the clamp.
K. Connect the battery.
L. Complete the operational ground check in Chapter 72-00.
74-30
Page 342
IN THE NEXT STEP, DO NOT PUT THE HARNESS DIRECTLY ON THE
SCREW IN THE COIL BOX HARNESS CLIP. ATTACH THE HARNESS
SECURELY TO ONE LOOP ON THE CLAMP BASE.
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
© 2018 Avco Corporation. All Rights Reserved
November 2018