Lycoming YO-233-B2A - Page 76

TEO-540-A1A Engine Maintenance Manual
05-50 © 2021 Avco Corporation. All Rights Reserved
Page 56 February 2021
YO-233-B2A Engine Maintenance Manual
Engine Inspection Checklist After Propeller Strike for YO-233-B2A Series Engines (Cont.)
Sequential Task
Additional
Information
Corrective Action
Done/Comments
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
Record test
results.
Use Replace
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.
Record test
results.
Use crankcase
Replace crankcase
26.
Complete the visual inspection and FPI on the
oil sump.
Record test
results.
Use oil sump
Replace oil sump
27.
Complete the visual inspection and FPI on the
engine mounts.
Record test
results.
Use engine mounts
Replace engine mounts
28.
Complete the visual inspection and FPI on the
accessory housing.
Record test
results.
Use accessory housing
Replace accessory housing
29.
Complete the visual inspection and FPI on the
oil pump impeller.
Record test
results.
Use impeller
Replace 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.
Record test
results.
Use EIS
Replace EIS
Use magneto
Replace magneto
31.
Examine the pistons per instructions in
Chapter 72-30 and the latest revision of the
Service Table of Limits - SSP-1776.
Record test
results.
Pistons acceptable
Replace pistons
32.
Refer to the latest revision of Service
Bulletin No. 240 to identify any parts that
must be replaced during engine assembly.
Record parts that
must be replaced.
33.
Install a new crankshaft gear bolt and new
lockplate.
Refer to the
“Crankshaft Gear
Installation”
procedure in
Chapter 72-20.