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YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Piston Inspection Checklist for YO-233-B2A Engine Models (Cont.)
Inspection Item
Measure the
Top piston
side clearance
compression
between the
ring
piston rings
and piston with
Second piston
a feeler gauge
compression
and straight
ring
edge (Figure
23).
Piston oil ring Actual
Measure the
Top piston
piston ring
compression
end-gap with
ring
feeler gauges.
Complete the
Second piston
"Piston Ring
compression
End Gap
ring
Check" in this
chapter.
Piston oil ring Actual
**Compare the actual measurement against the limits in the latest revision of the Service Table of Limits
- SSP-1776. Replace the piston if any of the measurements are out of tolerance.
© 2021 Avco Corporation. All Rights Reserved
February 2021
Figure 23
Checking Piston Ring Side Clearance
Cylinder 1
Actual
Measurement**
SSP-1776
Actual
Measurement**
SSP-1776
Measurement**
SSP-1776
Actual
Measurement**
SSP-1776
Actual
Measurement**
SSP-1776
Measurement**
SSP-1776
Findings/Corrective Action
Cylinder 2
Cylinder 3
Cylinder 4
72-30
Page 121
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