You'll find parts, diagrams, vacuum bags, and filters on Sears PartsDirect: searspartsdirect.com/model/5j3xarbfkx-000583/kenmore-elite-11631150313-upright-vacuum-parts
This is the first relevant diagram, "Body" diagram: c.searspartsdirect.com/lis_png/PLDM/1404238P-00001.png
The hose is key #8. You'll see three screws (key #23) holding the vacuum hose.
Here is that vacuum hose (key #8, part #KC84PDWFZV07): searspartsdirect.com/product/2qk716y4oa-0020-116/id-kc84pdwfzv07
The second relevant diagram, "Nozzle" diagram: c.searspartsdirect.com/lis_png/PLDM/1404238P-00004.png
You'll see that the hose is key #11. You'll need to remove the screws on the bottom (key #39) of the Nozzle to removed to top nozzle housing (key #4). There are two screws (key #18) holding that vacuum hose.
This is that hose (key #11, part #KC91PDWFZ000): searspartsdirect.com/product/3xkx5vln3y-0020-116/id-kc91pdwfz000
Use the coupon code CLEAN10 on Sears PartsDirect for 10% off.
Hope this helps!