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Engine Inspection Checklist After Propeller Strike for YO-233-B2A Series Engines (Cont.)
Sequential Task
24. Complete a magnetic particle inspection† on
the following internal parts made of steel:
• Accessory drive gears
• Magneto drive gears
• Idler and oil pump shafts
• Shaft gears and impellers
• Piston pins
• Connecting rods
† Refer to the section "Non-Destructive Testing" in this chapter.
25. Complete the visual inspection and
Fluorescent Penetrant Inspection (FPI) on the
crankcase.
Closely examine the forward crankcase
bearing support and adjacent structure.
26. Complete the visual inspection and FPI on the
oil sump.
27. Complete the visual inspection and FPI on the
engine mounts.
28. Complete the visual inspection and FPI on the
accessory housing.
29. Complete the visual inspection and FPI on the
oil pump impeller.
30. For Lycoming EIS, remove the unit and
reinstall per instructions in Chapter 74-30. If
the unit does not function correctly, replace
the EIS.
OR
Examine the magneto in accordance with the
magneto manufacturer's instructions.
31. Examine the pistons per instructions in
Chapter 72-30 and the latest revision of the
Service Table of Limits - SSP-1776.
32. Refer to the latest revision of Service
Bulletin No. 240 to identify any parts that
must be replaced during engine assembly.
33. Install a new crankshaft gear bolt and new
lockplate.
05-50
Page 56
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Additional
Information
Record test
results.
Use Replace
Record test
results.
Record test
results.
Record test
results.
Record test
results.
Record test
results.
Record test
results.
Record test
results.
Record parts that
must be replaced.
Refer to the
"Crankshaft Gear
Installation"
procedure in
Chapter 72-20.
© 2021 Avco Corporation. All Rights Reserved
Corrective Action
Done/Comments
Accessory drive gears
Magneto drive gears
Idler and oil pump shafts
Shaft gears and impellers
Piston pins
Connecting Rods
Use crankcase
Replace crankcase
Use oil sump
Replace oil sump
Use engine mounts
Replace engine mounts
Use accessory housing
Replace accessory housing
Use impeller
Replace impeller
Use EIS
Replace EIS
Use magneto
Replace magneto
Pistons acceptable
Replace pistons
February 2021
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