This manual covers the CASE CX135SR, a robust piece of construction equipment designed for demanding work environments. Engineered for reliability and performance, the CX135SR features a powerful diesel engine with a Common Rail Direct Injection fuel system and a hydrostatic transmission for precise control. Its substantial operating weight of approximately 13,400 kg underscores its capability for heavy-duty tasks. The inclusion of ROPS (Roll-Over Protective Structure) and a standard operator presence system highlights the commitment to operator safety. The purpose of this Service Repair Manual is to provide comprehensive technical information for the maintenance, repair, and servicing of the CASE CX135SR. It details essential procedures, technical specifications, and diagnostic information necessary for optimal operation and longevity of the equipment. Owners, technicians, and mechanics will find guidance on routine maintenance, component identification, and system overviews, ensuring the machine remains in peak condition and performs to its full potential.