Lycoming YO-233-B2A - Page 39

TEO-540-A1A Engine Maintenance Manual
© 2021 Avco Corporation. All Rights Reserved 05-20
February 2021 Page 19
YO-233-B2A Engine Maintenance Manual
50-Hour Inspection Checklist (Cont.)
Inspection Item
Comments
Results/Notes
Done
Look for any fuel or oil
leaks before cleaning the
engine.
Clean the engine.
Engine and Cowling
Examine all hoses, lines,
connections, wiring,
fittings, and baffles for
loose connections and any
damage.
Tighten any loose hardware.
Refer to the latest revision of the
Service Table of Limits - SSP-
1776 for torque values.
Replace damaged components as
per the Direct Drive Overhaul
Manual.
Examine the cowling and
baffles for damage and
correct installation.
Replace damaged cowling or
baffles. Refer to the aircraft
OEM procedures.
Champion Electronic Ignition System
Remove spark plug
connector nuts and
examine spark plug cable
leads and ceramics for
corrosion and deposits.
Corrosion and deposits are
evidence of leaking spark plugs
or of improper cleaning of the
spark plug walls or connector
ends.
Clean the cable ends,
spark plug walls, and
ceramics with a clean lint-
free cloth moistened with
methyl-ethyl-ketone
(MEK), acetone, or wood
alcohol.
Rotate or replace spark
plugs as necessary.
Refer to Table 2 in Chapter 74-
20.
Replace any broken,
cracked, deformed, or
corroded parts.
Dry all parts using
compressed air.
Visually examine the
ignition harness for
evidence of chafing or
deterioration.
Replace the harness assembly if
any leads are worn, damaged, or
broken.