Hello I will help you with your question,
What Year, Make and Model of vehicle are you asking about?
What is the engine size?
Let me know and I will provide the information you need
On your engine the belt goes around the lower engine mount so that will have to be loosened to replace the belt, Here is the routing diagram
REMOVAL PROCEDURE The accessory drive belt controls all engine-mounted accessories. All driven accessories rigidly mount to the engine. A spring-loaded belt tensioner maintains the drive belt tension. A belt squeak, occurring when starting or stopping the engine, it has not effect on belt durability. The drive belt tensioner can control the belt tension over a broad range of belt length. However, there are limits to the tensioner's compensation ability. When using the tensioner outside of its operating range, poor tension control and/or damage to the tensioner may occur.Remove the following components. Refer to Engine Mount Replacement
To remove the mount components
You are only loosening the mount and removing one spacer so you do NOT have to remove the entire mount
Let me know if you have further questions about this procedure