Limits And Clearances; Inspections - Lycoming TEO-540-C1A Maintenance Manual

TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Paint Stripping and Painting Guidelines for Components
Cylinders (Cont.) (5) Use a cloth dipped in paint thinner to remove paint from all surfaces where it
(6) Air-dry the cylinder or bake the cylinder in an oven until completely dry.
(7) Refer to Chapter 74-20 and paint the cylinder fin area appropriately for spark

3. Limits and Clearances

Refer to the latest revision of the Service Table of Limits - SSP-1776, for the following.
• Backlash and end clearance of gears
• Clearance between mating machined parts
• Clearance between moving parts that touch
• Torque limits for various nuts, screws, and fasteners.

4. Inspections

NOTICE: Inspections in this section refer to reusable items that do not require replacement in
accordance with the latest revision of Service Bulletin No. SB-240. Be sure to record
part replacement or any corrective action in the engine logbook.
A. Bearing Shell Surface Inspection
(1) Examine all bearing saddle surfaces for damage, scoring, galling, and wear. If any of
these conditions are found, identify and correct the cause.
(2) Make sure that the clearance of each bearing agrees with the specification in the latest
revision of the Service Table of Limits - SSP-1776.
• If a bearing is not in the specified limits in the latest revision of the Service Table of
Limit - SSP-1776, discard it and replace it with a new one.
(3) Examine all journal surfaces for galling, scores, misalignment, and out-of-round
condition. Replace a scored, galled, misaligned, or out-of-round component.
(4) Examine the shafts and pins for straightness.
B. Gear Inspection
(1) Examine the involutes of the gear teeth for pitting and excessive wear.
• If pit marks are found, discard the gear and replace it with a new one.
(2) Examine the bearing surfaces of all gears for deep scratches.
(3) Remove minor abrasions with a fine abrasive cloth.
C. Screwed Fitting Inspection
(1) Examine the condition of the threads on screwed fittings (threaded fastenings or plugs).
(2) Remove small nicks and burrs with a small file, fine abrasive cloth, or stone.
• If the part cannot be repaired by polishing it, discard it and replace it with a new one.
• If the part has too much distortion, galling, or mutilation (caused by over-tightening
or use of an incorrect tool) replace it.
© 2018 Avco Corporation. All Rights Reserved
November 2018
Table 1 (Cont.)
could have accidentally accumulated.
Refer to the paint manufacturer's instructions for drying time and oven
temperature.
plug identification.
72-10
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