This comprehensive instruction manual provides detailed guidance for operating and maintaining your International Harvester 2500B Pay Tractor, 2505B & 2510B Pay Loaders, and 2514B Pay Hoe. It covers a wide range of topics, including safety procedures, instrument and control identification, pre-operation checks, engine operation, transmission operation, hydraulic systems, loader operation, backhoe operation, maintenance procedures, lubrication, troubleshooting, and specifications. The manual begins with a thorough introduction to safety guidelines, emphasizing the importance of following proper procedures for safe operation. It then delves into the identification and functions of various instruments and controls, providing a clear understanding of the machine's operational layout. Detailed instructions for pre-operation checks ensure that your equipment is in optimal condition before starting work. The manual provides comprehensive guidance on operating the engine, including starting, stopping, and various maintenance procedures for gasoline and diesel engines. It also covers the operation and maintenance of different transmission types, such as the synchromesh and hydrostatic drive systems. Detailed sections on the operation of the loader and backhoe attachments offer step-by-step instructions for various tasks, including loading, digging, trenching, and lifting. The manual also provides insights into operating techniques for specific applications, ensuring efficient and safe use of these powerful attachments. A comprehensive section on maintenance procedures outlines regular checks, lubrication routines, and troubleshooting tips for keeping your equipment in top condition. It includes lubrication tables and diagrams to ensure proper maintenance. Finally, the manual provides detailed specifications for the tractor, backhoe, and loader attachments, including engine specifications, hydraulic system specifications, and dimensions. This information is essential for making informed decisions regarding maintenance, repairs, and operational adjustments. This manual, originally provided with the equipment, is a valuable resource for both experienced and novice operators, offering a wealth of information essential for safe and efficient operation of your International Harvester equipment.

The IH Model 2500B Pay Tractor, along with its complementary 2505B, 2510B Pay Loaders, and 2514B Pay Hoe, comprised a versatile and powerful line of construction equipment manufactured by International Harvester (IH). Designed for a variety of demanding tasks, these machines were renowned for their rugged durability and reliable performance. The 2500B Pay Tractor served as the backbone of the system, providing a robust platform for hauling heavy loads and powering auxiliary equipment. Equipped with an efficient diesel engine and a robust transmission, the 2500B could handle challenging terrain and demanding work cycles. Its powerful hydraulic system enabled it to effectively operate the attached Pay Loaders and Pay Hoe, enhancing its versatility and productivity. The Pay Loaders, available in 2505B and 2510B models, were designed to efficiently move and load materials. Featuring a sturdy boom and bucket assembly, these loaders offered excellent lifting capacity and reach, making them ideal for tasks like loading trucks, excavating basements, and moving bulk materials. The 2514B Pay Hoe, on the other hand, provided the power and precision needed for excavating trenches, digging foundations, and other demanding earthmoving tasks. Its powerful hydraulic system and well-balanced design ensured smooth and precise operation, minimizing operator fatigue and maximizing efficiency. Together, this suite of construction equipment offered a comprehensive solution for a wide range of projects, providing contractors with the power, versatility, and reliability needed to complete projects on time and within budget.