This service bulletin provides a comprehensive inspection procedure specifically designed for the coolant filter in Freightliner trucks equipped with DD13, DD15, and DD16 engines. It covers models from year 20 to year 63, encompassing a wide range of Freightliner truck lines including COE models like FLA, FLB, Argosy, and Cascadia, conventional models such as FLD, FLC 112, Century Class, Columbia, Coronado, and Business Class, and the Business Class M2. The bulletin's detailed instructions guide technicians through the meticulous process of inspecting the coolant filter, ensuring proper maintenance and optimal engine performance.

The Coolant Filter Inspection Procedure, specifically designated for Freightliner models DD13, DD15, and DD16 engines (sb2063), plays a crucial role in ensuring optimal engine performance and longevity. This procedural guide, designed for a diverse range of Freightliner trucks, including COE models like the FLA, FLB, and Argosy, conventional trucks such as the FLD, FLC 112, Century Class, and Columbia, as well as the Cargo, Coronado, Business Class M2, and Cascadia, outlines the steps for inspecting the coolant filter for potential contamination and degradation. This inspection is critical as a clogged coolant filter can hinder the engine's ability to effectively dissipate heat, potentially causing overheating and leading to severe engine damage. By adhering to the detailed instructions provided, drivers and technicians can readily identify any issues with the coolant filter and ensure its proper functioning, thus preventing costly repairs and downtime. The Coolant Filter Inspection Procedure is designed to be readily understood and executed by individuals with varying levels of experience. It outlines the necessary tools and equipment required for the inspection, emphasizes safety precautions to be taken during the process, and provides clear visual aids and step-by-step instructions for each phase of the inspection. The procedure covers aspects such as identifying the coolant filter location, visually inspecting the filter for any signs of damage or leakage, and checking the filter for proper flow and pressure. Beyond the inspection itself, the procedure also provides guidelines for filter replacement, outlining the correct procedure and the type of filter to use for each engine model. By following this comprehensive guide, truck owners, operators, and technicians can effectively maintain the integrity and functionality of the coolant filter, ensuring the long-term performance and reliability of their Freightliner trucks.