The Genuine Buddy 125 rear wheel diagram shows the complete rear wheel and drum brake assembly, including the rim, tire, valve stem, hub, axle, brake shoes, brake cam, brake arm, and related fender and mounting hardware. This diagram is used to identify OEM replacement parts for rear wheel service, tire replacement, and drum brake repairs. The assembly is responsible for delivering power to the road while also housing the rear braking system for safe stopping performance. Common repairs include replacing worn brake shoes, servicing damaged tires or valve stems, addressing wheel bearing wear that causes wobble or noise, and repairing brake cam or linkage issues that affect braking response.