1.Safety Preparations:
Parking Location: Park your vehicle in a flat, firm, and safe area away from traffic and hazardous areas such as slopes, soft surfaces, or near fire. Apply the parking brake, activate the hazard lights, and place a warning triangle at an appropriate distance behind the vehicle to alert other vehicles to avoid the vehicle.
Reducing Tire Pressure: Use a tire pressure gauge or tire pressure monitoring system to reduce tire pressure to near zero, but do not deflate the tire completely. This will reduce the risk of the tire popping or moving during subsequent operation.
2.Separating the Tire from the Rim:
Professional Tire Changing Machine: If you have a professional Tire Changing Machine, you can use the disc on the side of the breaker to press against the connection point between the tire and rim. Using the breaker, gradually separate the tire from the rim. When operating the breaker, strictly follow the equipment's instructions to ensure safety and avoid damaging the tire, rim, or the breaker.
Hand Tools (If you don't have a Tire Changing Machine): If you don't have a tire breaker, you can manually separate the tire from the rim using tools such as a pry bar. However, this is a difficult and skill-intensive operation and is not recommended for non-professionals. When using a pry bar, be sure to protect your hands and eyes to avoid injury. Insert the pry bar between the tire and the rim. Starting at the edge, carefully pry the tire apart, gradually separating it from the rim. While prying, continuously move the pry bar around the circumference of the tire until one side of the tire is completely free of the rim. Then, repeat the same process with the other side.
3.Removing the old inner tube: After separating the tire from the rim, secure it on a stable surface, such as a tire-changing stand or workbench. Remove the old inner tube from the tire, taking care not to damage the valve core or the tire.
4.Inspecting the tire: Before installing a new inner tube, carefully inspect the inner wall of the tire for foreign objects, such as nails, stones, or glass, which could cause further damage. Also, inspect the tire for tears, bulges, or other damage. If there are any serious problems, consider replacing the tire.
5.Installing a new inner tube:
Remove the new inner tube and first remove the valve cap and retaining nut from the valve core. Pre-inflate the new inner tube slightly to give it some springiness, but don't over-inflate.
Align the inner tube's valve stem with the valve hole on the rim. Then, slowly lower the inner tube into the tire along the inner wall. Ensure the inner tube lies flat and is not twisted or folded during insertion.
6.Installing the tire:
Starting from the valve side, press the edge of the tire into the rim. You can manually press the tire into place as much as possible. For more difficult areas, you can use a pry bar to assist, but be careful not to pinch the inner tube.
Gradually press the remaining portion of the tire into the rim, constantly checking to ensure the inner tube is not trapped between the tire and the rim. Once the tire is mostly seated, use a pry bar to install the final small section of the tire.
7.Inflation and Inspection: Use a tire pump to inflate the tire to the vehicle manufacturer's recommended pressure. During the inflation process, pay attention to the expansion of the tire to ensure that the tire expands evenly and the rim is aligned with the safety line of the tire. At the same time, check whether the joint between the tire and the rim is tight and whether there is any leakage. After inflation is completed, tighten the fixing nut on the valve core and the valve cap.
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