TEO-540-A1A Engine Maintenance Manual
© 2021 Avco Corporation. All Rights Reserved 05-50
February 2021 Page 55
YO-233-B2A Engine Maintenance Manual
Engine Inspection Checklist After Propeller Strike for YO-233-B2A Series Engines (Cont.)
Corrective Action
Done/Comments
Complete a check of the
connecting rods
parallelism.
Refer to the “Connecting
Rod/Parallelism/Squareness Check” in
Chapter 72-20 for measurement
instructions.
Record the parallelism measurement for each
connecting rod.
Replace all connecting rods not in
compliance with measurements in the latest
revision of Part I of the Service Table of
Limits - SSP-1776 (Reference 503).
Complete a check of
connecting rod
squareness.
Refer to the section “Connecting Rod
Parallelism/Squareness Check” in Chapter
72-20. Record the squareness measurement
for each connecting rod.
Replace all connecting rods not in
compliance with measurements in the latest
revision of the Service Table of Limits,
SSP-1776 (Reference 504).
NOTICE: The magnetic particle inspection must be done by a certified technician as per the latest revision
of Service Instruction No. 1285.
Complete a magnetic particle inspection on the
crankshaft.†
Magnetic particle test results
acceptable
Replace crankshaft
Complete a magnetic particle inspection on the
camshaft.†
Use camshaft
Replace camshaft
Complete a magnetic particle inspection on the
connecting rods.†
Replace connecting rod bolts and
nuts - regardless of condition. Refer
to the latest revision of Service
Instruction 1458 for assembly
instructions.
Complete a magnetic particle inspection on the
crankshaft gear.† Examine the gear end as per
the latest revision of Service Bulletin No. 475.
Use crankshaft gear
Replace crankshaft gear
† Refer to the section “Non-Destructive Testing” in this chapter.
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