Cat 3126 Engine: Specs, Configuration, Oil, and Service Intervals

Cat 3126 Engine Specs

The Cat 3126 engine is a popular choice for a variety of applications, including trucks, buses, and industrial equipment. Known for its reliability and performance, this engine has become a staple in many industries. In this article, we will explore the specifications of the Cat 3126 engine, its configuration, engine oil specs, and service intervals.

Engine Configuration

The Cat 3126 engine is an inline six-cylinder, four-stroke diesel engine. It features a displacement of 7.2 liters (439 cubic inches) and operates on a compression ratio of 16.5:1. This engine is electronically controlled, providing precise fuel injection and optimal performance.

Engine Oil Specs

Proper engine oil is crucial for the longevity and performance of any engine, including the Cat 3126. Here are the recommended engine oil specifications for this engine:

• Oil Type: The Cat 3126 engine requires the use of high-quality diesel engine oil that meets the API CJ-4 or better specifications. It is important to use oil specifically formulated for diesel engines to ensure proper lubrication and protection.
• Viscosity: The recommended viscosity for the Cat 3126 engine is SAE 15W-40. This viscosity provides excellent protection in a wide range of operating temperatures.
• Oil Capacity: The oil capacity of the Cat 3126 engine varies depending on the application. It is important to consult the engine’s manual or contact a Cat dealer to determine the specific oil capacity for your application.
• Oil Change Interval: Regular oil changes are essential for maintaining the health of the engine. The recommended oil change interval for the Cat 3126 engine is approximately every 10,000 to 15,000 miles or every 250 to 300 operating hours, depending on the application and operating conditions.

Service Intervals

In addition to regular oil changes, the Cat 3126 engine requires routine maintenance to ensure optimal performance and reliability. Here are some key service intervals to keep in mind:

• Fuel Filter Replacement: The fuel filter should be replaced every 12,000 to 15,000 miles or every 500 operating hours, whichever comes first. Regular fuel filter replacements help prevent contaminants from entering the engine and ensure proper fuel flow.
• Air Filter Replacement: The air filter should be inspected regularly and replaced as needed. In dusty or dirty environments, more frequent air filter replacements may be necessary to maintain optimal engine performance.
• Coolant Replacement: The coolant should be replaced every 24,000 to 30,000 miles or every 1,000 operating hours. Regular coolant replacements help prevent overheating and maintain the engine’s temperature within the recommended range.
• Belt Inspection and Replacement: The engine belts should be inspected regularly for signs of wear or damage. If any issues are detected, the belts should be replaced promptly to prevent engine damage or failure.

Detailed Engine Specifications

To provide a comprehensive overview of the Cat 3126 engine specifications, here is a detailed chart:

In conclusion, the Cat 3126 engine is a reliable and powerful engine that is widely used in various applications. By following the recommended engine oil specifications and service intervals, you can ensure the longevity and optimal performance of your Cat 3126 engine. Regular maintenance and proper care are key to keeping this engine running smoothly for years to come.