This comprehensive Cummins Big Cam IV, New Big Cam IV, 88 Big Cam IV NT855 Diesel Engine Specifications Manual provides a detailed overview of the engine's design and operation. The manual covers a wide range of topics, including engine assembly, engine diagrams, engine identification, engine testing, and specifications. You'll find information on key components such as the air compressor, cam follower assembly, cooling system, cylinder block, cylinder head, fuel pump, injectors, lubricating oil system, turbocharger, valve and injector adjustments, water pump assembly, and more. Additionally, the manual includes valuable information on torque values, drive belt tension specifications, weights and measures, and even decimal and metric conversion factors. This manual is essential for anyone working on or maintaining Cummins Big Cam IV, New Big Cam IV, or 88 Big Cam IV NT855 diesel engines. The content is organized for easy navigation and includes bookmarks for quick access to specific sections.

The Cummins Big Cam IV, also known as the New Big Cam IV and the 88 Big Cam IV NT855, is a legendary diesel engine renowned for its power, durability, and reliability. This engine was a staple in heavy-duty trucks, construction equipment, and marine applications for decades, known for its robust design and impressive performance. The Big Cam IV's legacy lies in its innovative design features, including a large bore and stroke, which provided significant torque and power, along with its signature camshaft design that further boosted performance. This engine was available in various configurations, catering to different applications and power requirements, with different horsepower ratings ranging from 250 to 425 horsepower. The Big Cam IV's success is attributed to its ability to handle demanding workloads and withstand harsh operating conditions, making it a trusted choice for heavy-duty applications.

The Big Cam IV's reputation for durability stems from its robust construction, utilizing high-quality materials and precision engineering. The engine features a cast-iron block and cylinder heads, heavy-duty crankshaft and connecting rods, and a reliable fuel system that ensures efficient combustion. The Big Cam IV was also designed for easy maintenance and repair, with readily accessible components and a well-documented service manual. Despite its age, the Big Cam IV remains a sought-after engine in the used market, appreciated for its reliability and ruggedness. However, with technological advancements, newer engines have surpassed the Big Cam IV in terms of fuel efficiency and emissions compliance. Although production of the Big Cam IV has been discontinued, it continues to be a testament to Cummins' engineering prowess and a symbol of the era when power and durability were paramount in heavy-duty applications.