Lycoming YO-233-B2A Maintenance Manual page 32

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(5)
Examine fuel and oil hoses for secure attachment, leaks or wear. Tighten any loose
connections. Replace any worn fuel or oil hoses. Refer to the Direct Drive Overhaul
Manual.
(6)
Examine the following for cracks, pitting and damage:
— External cylinder barrel
— Cylinder barrel fins
— Areas between and adjacent to the fins
— External surface of the cylinder head and fins
— Top and bottom spark plug bosses.
NOTICE: If you find any cracked, pitted or defective cylinders or components,
(7)
Examine the external surface of the crankcase for damage, cracks, and defects. If
damage, cracks or defects are found, replace the crankcase. Refer to the Direct Drive
Overhaul Manual.
(8)
Examine the accessory housing and its attached accessories for damage and defects.
Repair or replace any damaged, worn, or defective parts.
(9)
Make sure that the wiring harness and its connectors are attached correctly and not
damaged.
(10) Examine the wiring harness for correct attachment to the electrical connectors and
engine, broken or frayed wire, signs of chafing, deterioration, abrasion or heat-related
damage. Replace the wiring harness if a wire is broken, frayed, chafed, abraded,
overheated, or damaged. Refer to the Direct Drive Overhaul Manual.
(11) Make sure that the securing straps, and lockwiring are attached correctly and tightly.
(12) Make sure that the ignition system is operating correctly, in accordance with the aircraft
manufacturer's instructions.
(13) Make sure that the induction system is in satisfactory condition. Ensure that all clamps,
flanges, and hardware are securely fastened and that there is no evidence of leakage or
staining.
(14) Make sure that the lubrication system is in satisfactory condition. Ensure that all
clamps, flanges, and hardware are securely fastened and that there is no evidence of
leakage.
(15) In accordance with the airframe manufacturer's instructions, examine the induction air
filter for cleanliness, security, and indications of damage. Replace the air filter if it has
holes or is torn in accordance with the aircraft manufacturer's instructions.
05-20
Page 12
FUEL AND OIL HOSES MUST BE INTACT AND HELD SECURELY
IN PLACE TO PREVENT LEAKS DURING FLIGHT WHICH CAN
CAUSE CATASTROPHIC ENGINE FAILURE.
complete the cylinder inspection in accordance with Chapter 72-30.
THE WIRING HARNESS MUST BE INTACT FOR CORRECT ENGINE
OPERATION.
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
© 2021 Avco Corporation. All Rights Reserved
February 2021

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