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E. Apply a cap over oil and fuel lines and connections to prevent spillage and debris from
entering the engine.
F. Apply tags to identify ports, clips, tubes, wires, etc. for reference to make correct connections
during engine installation. Identify the location of each part during removal. Attach a tag to
unserviceable parts and units for examination or replacement.
G. Disconnect the alternator from the engine.
H. Remove all wiring bundle attaching clamps and hardware.
I. Remove the manifold pressure gage line and aircraft fuel supply lines in accordance with the
aircraft manufacturer's instructions.
J. Refer to the aircraft manufacturer's instructions to disconnect any accessory connection or to
remove any external accessories to enable removal of the engine from the aircraft.
K. Make sure that all wires, lines, and attachments between the engine and airframe are
disconnected and capped.
L. Reinstall the spark plug in each cylinder.
M. Attach an engine-lifting cable (with a minimum capacity of 750 lb (340 kg)) to the lifting
straps on the engine in accordance with Figure 1.
N. Use a crane or overhead hoist (with a minimum load of 750 lb (340 kg)) to take up slack on
the lifting cable until there is enough tension to hold the weight of the engine.
O. Remove the nuts and bolts from the engine mounts that are supplied by the airframe
manufacturer.
72-00
Page 102
Figure 1
Lifting Straps and Engine Mounts
© 2020 Avco Corporation. All Rights Reserved
IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
March 2020
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