This comprehensive Case 850D and 855D Crawler Dozer Operators Manual provides detailed instructions, diagrams, and illustrations based on the manufacturer's specifications. It is a complete guide for operating and maintaining your machine, covering all aspects of its functionality. The manual begins with an introduction, including an overview of the machine's components and a thorough safety section. It details essential safety procedures, covering personal safety, engine operation, and various machine operations such as loader, dozer, winch, backhoe, and parking the machine. A dedicated section focuses on the controls and instruments, providing a clear explanation of each component, including the instrument panel, foot pedals, transmission controls, neutral lock, master disconnect switch, parking brake, loader controls, dozer controls, winch controls, and backhoe controls. You'll find detailed illustrations and explanations of all controls, ensuring you have a complete understanding of their functionality. The manual then delves into operating instructions, guiding you through engine operation, crawler operation, and specific operating tips for loader, dozer, winch, ripper, and backhoe functionalities. Instruction on cold and hot temperature operation is also provided. A comprehensive maintenance and lubrication section is included, with a fluids and lubricants chart, a run-in period guide, maintenance schedules, and detailed instructions on greasing, air cleaner maintenance, engine lubrication and cooling system care, hydraulic system maintenance, transmission and torque converter servicing, final drives, batteries, track system care, winch maintenance, reversible fan care, and cab service. Finally, the manual offers specifications, diesel fuel specifications, product identification and serial numbers, and an index for easy reference.

The Case 850D and 855D crawler dozers are powerful and versatile machines designed for a wide range of heavy construction and earthmoving applications. These dozers are known for their robust construction, high performance, and operator comfort, making them ideal for projects involving site preparation, road building, land clearing, and material moving. Both models feature a powerful Case engine, offering exceptional torque and horsepower for efficient operation in demanding environments. The 850D is equipped with a 135 horsepower engine, while the 855D boasts a larger 165 horsepower engine. Additionally, both models are equipped with a hydrostatic transmission, allowing for precise control and smooth operation. This system provides seamless power transfer and responsiveness, enabling operators to work efficiently even in challenging terrain. The Case 850D and 855D dozers are engineered for operator comfort and ease of use. Both models feature a spacious cab with excellent visibility, providing operators with a clear view of the work area. The cab is designed to reduce noise and vibration levels, creating a comfortable and productive working environment. Ergonomic controls are strategically positioned to enhance operator comfort and precision. The dozers are also equipped with a range of safety features, including a rollover protection system (ROPS) and a falling object protection system (FOPS), ensuring operator safety in all working conditions. The 850D and 855D models are known for their reliability and durability. Their robust construction and high-quality components ensure long service life and minimal downtime, maximizing productivity and minimizing operating costs. These dozers are backed by Case's extensive dealer network, providing convenient access to parts, service, and technical support.