Belts transmit drive from the crankshaft to the alternator, water pump, cooling fan and other accessories, so belt condition determines the reliability of everything downstream. This group covers v-belts and multi-rib belts, tensioners, idler and jockey pulleys, fan drives including viscous couplings, and mounting brackets. CAT engines in generator service often drive substantial cooling fans, so belt and tensioner condition directly affects cooling capacity under sustained load. Automatic tensioners lose internal damping well before they show visible wear, which is why CAT service practice renews the tensioner alongside the belt rather than reusing it.
AMS Parts supplies a wide range of belts & tensioners components for CAT engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.
Browse our range of Belts & Tensioners parts below. Use the search bar above to find a specific part number, or request a quote.
Yes, as standard practice. Automatic tensioners lose spring tension and damping with age, and a worn tensioner shortens the life of a new belt.
Insufficient tension, a worn or seized idler, pulley misalignment, or oil and coolant contamination on the belt face.
The silicone fluid degrades or leaks so the drive no longer locks up when hot. The result is reduced airflow and overheating under load, often with no other symptom.
