Diesel engines are prized for their durability and efficiency, but they require regular maintenance to remain in top condition. One critical component that often suffers from neglect is the camshaft. Camshaft failure can lead to extensive engine damage and costly repairs. Let’s explore potential causes of camshaft failure, preventative measures, and common mistakes people make when maintaining their diesel engines.
Potential Causes of Camshaft Failure
Insufficient Lubrication: Proper lubrication is essential for the camshaft's operation. Oil reduces friction and heat, preventing wear on the camshaft lobes and lifters. Using low-quality oil or failing to change the oil regularly can lead to camshaft failure.
Incorrect Break-In Procedure: The break-in period is crucial for a new camshaft. Using the wrong lubricant or not following the recommended procedure can cause significant damage. For flat tappet cams, a moly paste must be applied to every cam lobe surface and lifter face. Roller tappet cams require engine oil on the lifters and cam. An anti-wear additive can be used for extra protection.
Mechanical Interference: Issues such as spring coil bind, retainer-to-seal interference, and valve-to-piston interference can cause mechanical failure. These interferences prevent the camshaft from moving freely, leading to premature wear or breakage.
Improper Installation: Incorrect installation of camshaft replacement parts, including misaligned lifters or improper torque on bolts, can result in camshaft failure. Always follow manufacturer specifications during installation.
Excessive Spring Pressure: High spring pressure can hinder lifter rotation and cause excessive heat, leading to camshaft and lifter wear. Make sure spring pressures are within recommended limits, especially during the break-in period.
Preventative Measures
Regular Oil Changes: Use high-quality oil and follow a regular oil change schedule. Proper lubrication prevents friction and heat build-up.
Use the Right Lubricants: Apply the recommended moly paste to flat tappet cams and ensure all components are adequately lubricated.
Correct Break-In Procedure: Start the engine promptly and run it between 1,500 and 3,000 rpm, varying the speed for the first 15 to 20 minutes. This ensures proper lubrication and bedding of the camshaft and lifters.
Regular Inspections: Periodically inspect the camshaft and related diesel engine parts for signs of wear or damage. Early detection of issues can prevent more severe damage and costly repairs.
Follow Manufacturer Guidelines: Adhere to the manufacturer’s specifications for installation and maintenance. This includes torque settings, lubricant recommendations, and break-in procedures.
Common Mistakes to Avoid
Using Synthetic Oil During Break-In: Synthetic oil can be too slick, preventing proper bedding of the camshaft and lifters. Use non-synthetic oil for the initial break-in period.
Ignoring Manufacturer Specifications: Skipping steps or using incorrect camshaft replacement parts can lead to premature failure. Always follow the guidelines provided by the manufacturer.
Neglecting Regular Maintenance: Failing to change oil regularly or inspect the camshaft can lead to excessive wear and eventual failure. Regular maintenance is key to a long-lasting engine.
Improper Installation: Not aligning lifters correctly or using incorrect torque on bolts can cause camshaft issues. Ensure that all parts are installed as per the manufacturer’s instructions.
Overlooking Lifter Rotation: During the break-in period, ensure that lifters are rotating correctly. Non-rotating lifters indicate improper contact with the cam lobes, leading to wear and failure.
Protect Your Engine
By understanding the causes of camshaft failure and implementing preventative measures, you can significantly extend the life of your diesel engine. Regular maintenance, proper lubrication, and adherence to manufacturer guidelines are essential to prevent camshaft failure and ensure your engine runs smoothly for years to come. At ATL Diesel, we embody the "Above the Line" philosophy in every aspect of our operations. Our commitment to excellence, authenticity, and fair pricing means you can trust us to provide the highest quality products and services. Trust ATL Diesel to keep your diesel engine running at its best, and experience the dedication that has driven us since 1973. Visit us online or contact us at 866-905-3475 to learn more about how we can support your diesel engine needs.