Lycoming TEO-540-C1A Maintenance Manual page 90

Engine Inspection Checklist After Propeller Strike for TEO-540-C1A Engines (Cont.)
Sequential Task
13. Clean the following internal
parts made of steel:
• Connecting Rods
• Flat Tappets
• Piston pins
• Rocker shafts
• Accessory drive gears
• Permanent Magnet
Alternator (PMA) drive gear
• Idler and oil pump shafts
• Shaft gears and impellers
CAUTION BASED
HISTORICAL
STRAIGHTENING OR GRINDING OF BENT CRANKSHAFT PROPELLER FLANGES
TO RESTORE MAXIMUM RUN-OUT SPECIFICATION. IF THE CRANKSHAFT
PROPELLER FLANGE IS BENT, REPLACE THE CRANKSHAFT. DO NOT TRY TO
STRAIGHTEN OR GRIND THE CRANKSHAFT PROPELLER FLANGE. REFER TO
THE LATEST REVISION OF SERVICE BULLETIN NO. SB-201.
CRANKSHAFT P/N:
14. Measure the flange run-out on the
crankshaft.
15. Measure the main bearing run-out
on the crankshaft.
16. Measure the polished dimensions
on the main journals.
17. Measure the polished dimensions
on the pin journals.
* If the measurement or dimension is out of tolerance, discard the crankshaft and replace it with a
serviceable crankshaft. Install the crankshaft per "Crankshaft Installation" procedure in Chapter 72-20.
05-50
Page 60
Additional Information
Refer to Chapter 05-30.
UPON THE ACCUMULATED
DATA AVAILABLE,
Refer to the latest revisions of both Service
Bulletin SB-240 and Part I of the Service
Table of Limits - SSP-1776 for crankshaft
flange run-out tolerance.
Record the crankshaft flange run-out
measurement.*
Refer to the latest revision of Part I of the
Service Table of Limits - SSP-1776 for the
main bearing run-out tolerance
Record the main bearing run-out
measurement.*
Refer to the latest revision of Part I of the
Service Table of Limits - SSP-1776 for the
dimensions on the main journals
Record the dimensions of the main
journals.*
Refer to the latest revision of Part I of the
Service Table of Limits - SSP-1776 for the
dimensions on the pin journals
Record the dimensions of the pin journals.*
Dimension:_________________________
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
ENGINEERING,
LYCOMING
S/N:
© 2018 Avco Corporation. All Rights Reserved
Corrective Action
Done/Comments
TECHNICAL, AND
ENGINES PROHIBITS
Flange run-out
within acceptable
limits - use
crankshaft
Replace crankshaft
Main bearing run-
out within
acceptable limits -
use crankshaft
Replace crankshaft
Main journals
within acceptable
limits -
use crankshaft
Replace crankshaft
Pin journals within
acceptable limits -
use crankshaft
Replace crankshaft
November 2018