How Often Should the Idler Pulley Be Replaced?

[MacAugust]

Engine idler pulleys should be replaced together with the timing belt. If it's the original timing belt, it is recommended to replace it every 60,000 to 80,000 kilometers. More relevant information is as follows: 1. Function: The main functions of the idler pulley include changing the direction of rotation of the driven pulley, increasing the transmission distance, adjusting the pressure angle, etc. The idler pulley is a transitional component in the gear system, which does not change the transmission relationship but is used to make the force distribution in the gear system more reasonable or to meet the layout requirements of the entire transmission system. The idler pulley can extend the wheelbase, and the number of its teeth does not affect the transmission ratio but will affect the rotation direction of the final gear. 2. Introduction: An idler pulley is a gear that transmits power between two non-contacting drive gears, meshing with both gears to change the rotation direction of the driven gear to match that of the driving gear. It only changes the rotation direction without altering the transmission ratio, hence it is called an idler pulley.