Engine Removal And Return To Service; Engine Removal Prerequisites; Engine Removal Procedure - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual

72-00 - ENGINE REMOVAL AND RETURN TO SERVICE

NOTICE: Instructions in this chapter are general guidelines for engine removal and return to
service. Refer to the aircraft manual for instructions specific to each application.

1. Engine Removal Prerequisites

WARNING DURING ALL MAINTENANCE PROCEDURES AND INSPECTIONS,
ENSURE THAT THE ENGINE IGNITION SWITCH IS IN THE "OFF"
POSITION, ALL POWER TO THE AIRCRAFT IS DISCONNECTED, AND
ALL PERSONNEL ARE CLEAR OF THE PROPELLER'S ROTATIONAL
ARC.
A. Before engine removal from the aircraft:
NOTICE: If the engine is to be stored or sent to the factory for service or overhaul, complete
the engine preservation procedure before engine removal. Refer to instructions in
the "Engine Preservation and Storage" chapter in the TEO-540-C1A Engine
Installation and Operation Manual.
(1) Complete the engine preservation procedure, as necessary.
(2) Make sure that all electrical switches, circuit breakers, Ignition Switch, and the Fuel
Selector Valve are in the OFF position.
(3) Pull the circuit breaker to discharge power to the EECS/ECU.
(4) In accordance with the aircraft manufacturer's instructions, remove all cowling, baffling
and nacelle access panels to enable engine removal.
(5) Disconnect the ground terminal of the battery.
(6) Disconnect the positive terminal of the battery.
(7) Disconnect and examine the leads and wiring for damage or frayed wiring. Replace
damaged or frayed wiring per aircraft manufacturer's instructions.
(8) Remove all engine accessories, aircraft components, or aircraft component connections as
necessary for engine removal.
(9) If not already done to prepare the engine for storage or shipping, drain oil from engine.
Refer to the "Oil Change Procedure" in Chapter 12-10.
(10) Remove the propeller in accordance with the aircraft manufacturer's instructions and/or
propeller manufacturer's instructions.

2. Engine Removal Procedure

NOTICE: If the engine is to be returned to the factory for servicing, the engine wiring harness,
ECU, and FADEC must be disconnected and removed from the airframe and returned
with the engine.
Refer to Table 2 - Wiring Harness Connector Guidelines in Chapter 72-70 when
disconnecting the wiring harness to avoid damage to the connectors.
A. Remove the engine as follows:
(1) Complete the prerequisites in the section "Engine Removal Prerequisites" in this chapter.
(2) During removal of engine parts, look for indications of scoring, burning or other
unacceptable conditions of the wire harness, hoses and related parts.
(3) Disconnect all connecting control cables.
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November 2018
72-00
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