This comprehensive Illustrated Parts Catalog (IPC) and Illustrated Parts List (IPL) Manual for Lycoming O-340 Series Aircraft Engines, designated PC-105, provides a detailed and organized resource for identifying, procuring, and servicing parts for these engines. This manual is an essential tool for mechanics, technicians, and aircraft owners working on Lycoming O-340 series engines.

The manual is divided into six sections, each designed to assist in the identification and acquisition of specific parts. The Illustrated Parts Section presents exploded views of the basic 0-340 Series engines, illustrating all procurable parts with their corresponding part numbers. The Numerical Parts Section lists all procurable parts in numerical sequence, providing detailed dimensions and quantity requirements per engine. Assemblies are broken down into their component parts, with quantities and part numbers provided for each.

The Numerical Standards Parts Section details Lycoming standard parts, such as nuts, bolts, washers, and seals, using the prefix "STD" to distinguish them. The Oversize and Undersize Parts Section lists parts available in sizes deviating from their nominal or standard dimensions, providing the part name or number and the available non-standard sizes. The Service Replacement Set Section provides a list of service replacement sets, including seals, gaskets, and complete cylinder, piston, and ring combinations.

Finally, the Attaching Parts Section provides a comprehensive listing of all engine assemblies and subassemblies, arranged alphabetically. Each listing includes the necessary attaching parts, with quantities shown for one assembly.

The Lycoming O-340 series is a renowned family of horizontally opposed, air-cooled, four-cylinder gasoline engines, renowned for their reliability and efficiency. Designed and manufactured by Lycoming Engines, a leading provider of aerospace power solutions, these engines have been powering a wide range of general aviation aircraft for over six decades. The O-340 series comprises several variants, each tailored to specific performance requirements. Notable models include the O-340-A1A, O-340-A1B, and O-340-A1D, known for their varying power outputs, ranging from 150 to 180 horsepower. These engines are characterized by their rugged construction, employing cast-iron cylinders and aluminum alloy crankcases, ensuring durability even in demanding flight conditions. Additionally, they feature a sophisticated fuel injection system, contributing to their excellent fuel economy and consistent performance.

The Lycoming O-340 series has earned a reputation for its ease of maintenance and serviceability. The engines are designed with accessibility in mind, allowing for straightforward inspection and repair. Moreover, Lycoming provides comprehensive technical documentation, including the Parts Catalog (IPC), Illustrated Parts List (IPL), and a comprehensive PC-105-PDF manual. These resources offer detailed information on every component of the engine, from engine parts to maintenance procedures. This comprehensive documentation empowers aircraft owners, mechanics, and technicians with the knowledge and resources needed to ensure the long-term reliability and operational performance of these engines. The Lycoming O-340 series continues to be a popular choice for general aviation aircraft, thanks to its proven reliability, efficiency, and the extensive support provided by Lycoming.