How to Determine if a Tensioner Pulley is Faulty?

1 Answers
SanDaniela
07/30/25 4:32am
Methods to determine if a tensioner pulley is faulty include: 1. Noticeable resonance, loud noise during rapid acceleration, and insufficient power; 2. A squeaking sound when starting the vehicle; 3. Loud noise under high power consumption. The tensioner pulley is a belt tensioning device used in the automotive transmission system. It mainly consists of a fixed housing, tensioning arm, pulley body, torsion spring, rolling bearing, and spring bushing. It automatically adjusts the tension force based on the belt's tightness to ensure the transmission system remains stable, safe, and reliable. A tensioner generally refers to the belt tensioning device, while a tensioner pulley specifically refers to the belt tensioning device used in automotive transmission systems.
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