Lycoming YO-233-B2A Maintenance Manual page 138

Cylinder Assembly Inspection Checklist for YO-233-B2A Engine Models (Cont.)
Examine mounting pads for
rocker box covers for nicks,
scoring or dents.
Corrective Action:
Replace all nicked, scored, or
dented mounting pads for rocker
box covers.
Examine the spark plug Heli-Coil
inserts for looseness or damage.
Corrective Action:
Replace all loose or damaged spark
®
plug Heli-Coil inserts with
oversize inserts per the "Heli-Coil
Replacement" procedure in this
chapter.
Examine studs on the cylinder head
for looseness of damage.
Corrective Action:
Replace all loose or damaged studs
with the next higher applicable
oversize studs.
Measure the inside diameter of
the rocker shaft bushings. Refer to
the latest revision of the Service
Table of Limits - SSP-1776 for
dimensions.
Corrective Action:
Replace the rocker shaft bushings if
they are not in accordance with
specifications.
72-30
Page 118
Cylinder 1
Cylinder 2
Cylinder 3
Cylinder 4
®
Cylinder 1
Cylinder 2
®
Cylinder 3
Cylinder 4
Cylinder 1
Cylinder 2
Cylinder 3
Cylinder 4
Cylinder 1
Cylinder 2
Cylinder 3
Cylinder 4
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YO-233-B2A Engine Maintenance Manual
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February 2021