How do you change alt belt on 2litre diesel x type jaguar?

To change the alternator belt on a 2.0-litre diesel Jaguar X-Type, first, ensure the engine is off and cool. Remove the engine cover if necessary, then locate the tensioner pulley and use a wrench to relieve tension on the belt. Carefully slide the old belt off the pulleys and replace it with the new one, ensuring it follows the correct routing. Finally, reapply tension using the tensioner and double-check the alignment before reassembling any removed parts.