Lycoming TEO-540-C1A Maintenance Manual page 178

Crankshaft Inspection Checklist for TEO-540-C1A Engines (Cont.)
Item
Examine the gear mounting
face of the crankshaft
counterbore.
Examine and measure the
alignment dowel per
instructions in the "Alignment
Dowel Inspection" in this
chapter.
Counterweight Inspection
NOTICE: A crankshaft counterweight (Figure 28) cannot be repaired. It only can be replaced.*
A counterweight roller cannot be repaired. It only can be replaced as an identical
paired set specific for each counterweight.*
Examine the surface of the
counterweight for scoring,
scratches, punch marks, or
any other surface damage.
Make sure the counterweight
surface is smooth.
Findings / Comments:
*Refer to the latest revision of Service Instruction Nos. SI-1012 and SI-1535 for part numbers and
instructions to replace counterweights and rollers.
72-20
Page 148
If the mounting face of the
crankshaft counterbore is
damaged, replace the crankshaft.
Figure 28
Crankshaft Counterweight, Rollers, and Bushings
Replace the counterweight if
there is scoring, scratches,
punch marks, or any other
surface damage or if the
counterweight surface is not
smooth.
If one or more cracks are
found on the counterweight,
replace the counterweight*.
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Comments
Outcome of Counterweight
Position 1 inspection:
Accept
Replace
Outcome of Counterweight
Position 2 inspection:
Accept
Replace
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Findings/
Corrective Action
November 2018
Done