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Overview of maintenance tasks and general information.
List of specific tools required for engine maintenance procedures.
Defines the differences between engine overhaul and factory rebuild.
Specifies the recommended overhaul intervals and factors affecting them.
Critical safety warnings before performing any maintenance.
General guidelines and best practices for maintaining the engine.
Criteria for visual inspection of engine components.
Guidelines on approved methods and procedures for engine upkeep.
Information regarding the use of genuine Lycoming parts.
Guidelines for preventing corrosion on engine parts.
Procedures and guidelines for painting engine parts.
Reference to specifications for limits and clearances.
General guidelines for performing inspections.
Procedures for inspecting gears for wear and damage.
Guidelines for inspecting threaded fittings.
General information on time-based maintenance inspections.
Schedule outlining required engine inspections and their intervals.
Step-by-step guide for performing a visual inspection of the engine.
Checklist and procedure for the initial 10-hour engine inspection.
Inspection procedure for 25-hour intervals, focusing on oil.
Procedure for the 50-hour engine inspection.
Checklist for 100-hour or annual engine inspections.
Procedure for the 400-hour engine inspection.
Procedure for the 500-hour engine inspection.
Procedure for the 1000-hour engine inspection.
General guidelines for cleaning engine components.
Guidelines and safety precautions for grit-blasting engine parts.
Procedure for removing soft carbon deposits from components.
Procedure for removing hard carbon deposits from components.
Specific instructions for cleaning engine cylinders.
Procedure for cleaning engine pistons.
Cleaning guidelines for various metal parts.
Procedure for cleaning spark plugs.
Method for removing lead deposits from engine parts.
Procedure for cleaning volcanic ash contamination.
Instructions for cleaning an engine exposed to liquids.
Cleaning requirements before NDT inspections.
Actions to take after the engine is exposed to a lightning strike.
Guidelines for inspecting and correcting engine overspeed incidents.
Steps to take when incorrect fuel or contamination is suspected.
Instructions for handling engines exposed to water or liquids.
Guidelines for components exposed to fire or heat.
Diagnosis and correction of hydraulic lock conditions.
Procedures for dealing with volcanic ash and particulate contamination.
Corrective actions for valve sticking issues.
Troubleshooting steps for low oil pressure or starvation.
Identification and corrective actions for metal particles in the oil.
Inspection and corrective actions following a propeller strike.
Procedures for Magnetic Particle and Fluorescent Penetrant Inspections.
Instructions and precautions for refueling the engine.
Steps for checking and maintaining the engine oil level.
Guidelines for monitoring and identifying abnormal oil consumption.
Recommendations for correct oil types and viscosities.
Procedure for adding oil to the engine.
Procedure for inspecting and identifying oil leaks.
Recommended schedule for oil changes and filter replacement.
Detailed steps for performing an engine oil change.
Procedure for replacing the engine oil filter.
Instructions for removing, inspecting, and cleaning the oil suction screen.
Guidelines for inspecting oil filter elements and suction screens.
Methods for identifying metallic particles found in oil samples.
Detailed visual inspection criteria for oil filter elements and screens.
Introduction to troubleshooting engine problems.
Guide to identifying causes and corrective actions for engine issues.
Essential steps before removing the engine from the airframe.
Step-by-step instructions for removing the engine.
Requirements and parts needed before installing the engine.
Procedure for ground testing the engine post-maintenance.
Procedure for adjusting idle speed and mixture settings.
Inspection procedure for engine mounts.
Final steps to return the engine to service.
Overview of the crankcase system.
Maintenance schedule for the crankcase.
Procedure for inspecting the engine crankcase.
Overview of scheduled cylinder inspection procedures.
Table detailing scheduled cylinder inspection types and frequencies.
Procedure for visually inspecting cylinders and cylinder heads.
Method for measuring cylinder pressure leakage and condition.
Procedure for inspecting cylinder internals using a borescope.
Inspection of exhaust valves and guides for wear and sticking.
Checklists and procedures for inspecting pistons.
Checklist and procedures for inspecting connecting rods.
Procedure for replacing connecting rod bushings.
Procedure for checking connecting rod parallelism and squareness.
Steps for installing connecting rods and bearings.
Procedure for replacing piston rings.
Procedure for installing pistons onto connecting rods.
Procedure for removing and installing intake valves.
Procedure for removing and installing exhaust valves.
Procedure for installing cylinders onto the engine.
Overview of the engine lubrication system.
Maintenance tasks related to engine lubrication.
Inspection procedure for accessory drives at 100-hour intervals.
Overview of the engine's electrical system.
Inspection procedure for aircraft wiring harnesses.
Detailed examination of wiring for damage and defects.
Procedure for inspecting the alternator belt.
Steps for adjusting alternator belt tension.
Procedure for replacing the starter ring gear support.
Overview of the engine's induction system.
Procedure for inspecting air intake ducts and filters.
Overview of the engine fuel and control system.
Procedure for inspecting the aircraft fuel system.
Procedure for inspecting and replacing the fuel filter.
Overview of the engine ignition system.
Schedule and references for ignition system component maintenance.
Procedure to examine the routing of ignition leads.
Steps for safely removing spark plugs from the engine.
Guidelines for examining spark plugs and ignition leads.
Recommendations to prevent spark plug fouling.
Inspection of spark plug port seals and Heli-coils.
Procedure for cleaning spark plugs.
Instructions for setting the correct spark plug gap.
Procedure for rotating spark plugs to prevent fouling.
Steps for correctly installing spark plugs.
Information on the Champion EIS ignition system.
Procedure for replacing and timing the EIS.
Details on the Light Speed Plasma III and Magneto ignition system.
Procedure to convert from Champion EIS to Light Speed Plasma III.
Procedure for inspecting magnetos.
Procedure to check magneto timing with the engine.
Procedure to adjust magneto timing to the engine.
Procedure for replacing engine magnetos.
Overview of the YO-233-B2A series engine.
Explanation of the engine model number designations.
Information on identifying the engine's serial number.
Explanation of cylinder numbering and firing order.
Defines the content and applicability of this maintenance manual.
Information on maintaining engine safe and airworthy condition.
Recommendations for environmental compliance during engine service.
Explanation of safety advisory conventions used in the manual.
Information on service documents and updates.
Reference to Lycoming Engines' publication list.
Information on Instructions for Continued Airworthiness (ICAs).
Explanation of the use of Simplified Technical English in the manual.
Details on chapter format, figures, tables, and checklists.
Information on publication copyright and feedback submission.
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