The Rolls-Royce M250-C18 Commercial Service Letter (CSL) Index is an essential document for maintenance centers, technicians, and operators involved with the Rolls-Royce M250-C18 series engines. This manual acts as a comprehensive guide, serving as an index for various service letters that have been issued by Rolls-Royce Corporation concerning this specific engine model.
Overview of the Manual
The manual includes a detailed list of commercial service letters, each designated with a unique CSL number. These letters cover a range of topics vital for the proper servicing and operation of the Rolls-Royce M250-C18 engine. Key areas addressed in the indexed service letters include authorized maintenance procedures, suggested maintenance center contacts, warranty information, training recommendations, and cautions regarding unapproved parts. Moreover, the manual specifies approved lubricants for the engine oil system and fuels that are safe to use with the 250-C18 series engines.
Revisions and Cancellations
Among the documents listed, there are several revisions noted, indicating changes to earlier versions. This ensures that users have access to the latest and most accurate information. Additionally, multiple service letters have been marked as cancelled, with many of these cancellations directing users to refer to operations and maintenance manuals for further guidance. Others are cancelled without substitution, signifying the no longer relevant procedures or parts have been made obsolete due to advancements in technology or changes in regulation.
Valuable Maintenance and Service Information
The CSL Index is particularly significant for authorized distributors and maintenance centers, as it consolidates a spectrum of service letters into one indexed document. This organization enables swift navigation through the numerous updates and advisories issued for the engine model in question. Information such as maintenance frequency for specific components, guidelines for prevention of corrosion, and instructions for adjustments of vital parts like the start derichment valve is readily available.
Engine-Specific Topics
Engine-specific topics discussed within the indexed service letters include Time Between Overhauls (TBO), inspection and maintenance protocols following engine inactivity, compressor blade stress reduction, and power turbine (Nz) rub. The list also provides advice on visual inspection limits for the compressor rotor and the cleaning procedures for turbine scavenge oil tubes.
Index Revision Date
This iteration of the index was revised on March 3, 2020, and is part of an ongoing series of service publications provided by Rolls-Royce to ensure the highest standards of engine performance and maintenance, underlined by safety and operational reliability. The index page states “M250-C18 INDEX PAGE 1 OF 12,” indicating that this manual is only a segment of a larger document.
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