Tappet Inspection - Lycoming TEO-540-C1A Maintenance Manual

N. For the squareness check, use a feeler gage to measure the clearance at the four check points
where the arbors rest on the parallel blocks (Figure 38). Record the measurement in the
Connecting Rod Inspection Checklist for TEO-540-C1A Engines earlier in this chapter
O. Compare the clearance between each arbor and the parallel blocks against the values in the
latest revision of the Service Table of Limits - SSP-1776. If out of tolerance, replace the
connecting rod and examine the crankshaft to make sure the crankshaft is not damaged.

15. Tappet Inspection

NOTICE: Complete the Tappet Inspection Checklist to examine the hydraulic hyperbolic tappets
(Figure 39).
Tappet Inspection Checklist for TEO-540-C1A Engine Models
Task
Examine the tappet body for part
number identification as shown in the
illustrations in Figure 40.
* Refer to the latest revision of Service Instruction No. SI-1011 for part numbers.
Part Number Locations on Hydraulic Lifter Assembly and Tappet
72-20
Page 160
Figure 39
Hydraulic Hyperbolic Tappet*
If the part number cannot be
identified, remove and replace the
tappet body with a new tappet
body.*
P/N Location on
Hydraulic Lifter
Figure 40
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Corrective Action
P/N Location on Hydraulic
Hyperbolic Tappet*
© 2018 Avco Corporation. All Rights Reserved
Findings
November 2018