Belt TENSIONERS
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The belt tensioners are calibrated to provide the correct amount of tension to the belts for the drive system. Unless a spring within the tensioner assembly breaks, or some other mechanical part of the tensioner fails, there is no need to check the drive belt tension. The belt tensioners also provide the means to remove and install the drive belts. Each belt tensioner consists of an idler pulley on the end of a spring loaded pivot arm. The pivot arms can be turned manually for removal and installation of the drive belts.
Each belt tensioner is calibrated to automatically maintain the correct tension in the related drive belt.