This comprehensive service repair manual is specifically designed for the Komatsu D85C-21 (For -50°C Specification) Pipelayer, covering serial numbers 36551 and up. It provides detailed information on maintaining, assembling, disassembling, and servicing this powerful machine. The manual is packed with technical data, specifications, diagrams, and real-life photo illustrations. These elements work together to guide you through every step of repair, servicing, technical maintenance, and troubleshooting procedures. With this manual, you will gain a thorough understanding of your machine, enabling you to diagnose problems and perform repairs confidently. This valuable resource eliminates the need for costly service calls, allowing you to save time and money while gaining valuable mechanical skills.

The Komatsu D85C-21 Pipelayer, specifically designed for operation in extremely cold environments down to -50°C, is a robust and versatile machine engineered for efficient pipeline construction. This heavy-duty crawler tractor, built on the legendary Komatsu D85C platform, boasts a powerful engine and a dedicated pipelayer attachment, making it ideal for demanding tasks such as pipe laying, trenching, backfilling, and other associated activities. Its cold weather specification includes modifications such as a heated cab, cold-resistant hydraulics, and a specially formulated engine oil, ensuring optimal performance and reliability even in the harshest conditions.

The D85C-21 Pipelayer is equipped with a powerful Komatsu SAA6D140E-2 engine, delivering ample power for heavy lifting and maneuvering. The machine's robust undercarriage, featuring durable tracks and a strong frame, provides exceptional stability and traction, allowing it to operate on challenging terrain and uneven surfaces. A hydraulically operated pipelayer attachment, integral to this specialized machine, offers precise control and efficient handling of large pipes. The D85C-21 Pipelayer also incorporates a range of safety features, including a comfortable and spacious operator cab with a comprehensive instrument panel and ergonomic controls, ensuring a safe and productive working environment for the operator.