This service bulletin addresses refrigerant leaks that may occur due to improperly tightened fasteners in Freightliner trucks. The bulletin provides detailed information about the specific models affected, including the Freightliner FLA COE, FLB COE, FLD Conventional, Business Class, FLC 112 Conventional, Century Class Conventional, Argosy COE, Cargo, Columbia, Coronado, Business Class M2, Cascadia, and 108SD/114SD. The bulletin outlines the potential causes of leaks and provides recommended procedures for properly tightening fasteners to prevent future leaks. It also offers guidance on identifying and addressing any existing leaks. This service bulletin is a valuable resource for technicians and mechanics working on Freightliner trucks, ensuring proper maintenance and repair practices to prevent refrigerant leaks and maintain optimal performance.

## Freightliner Trucks: A Leader in the Commercial Vehicle Industry Freightliner, a prominent name in the commercial vehicle industry, is renowned for its diverse range of heavy-duty trucks. The company offers a comprehensive selection of models catering to various applications, from long-haul trucking to regional delivery and construction work. The models listed – FLA, FLB, FLD, Business Class, FLC, Century Class, Argosy, Cargo, Columbia, Coronado, Business Class M2, Cascadia, and 108SD/114SD – represent a wide spectrum of Freightliner's offerings, each designed to meet specific performance and operational requirements. The "Refrigerant Leaks Due to Improperly Tightened Fasteners Manual" focuses on a crucial aspect of maintaining these trucks: ensuring proper installation and tightening of fasteners related to the refrigeration system. As refrigerant leaks can significantly impact the efficiency and performance of the truck's cooling system, this manual serves as a valuable tool for technicians and mechanics. It provides detailed instructions, specifications, and torque values for each fastener involved in the refrigeration system, helping to prevent leaks and ensure optimal operation. The manual aims to guide technicians through the process of accurately tightening fasteners, minimizing the risk of refrigerant leaks and promoting long-term system reliability and performance.