Method for assemble and disassembling light truck tire

The tires we use now are nothing more than tubeless tires and tubed tires, and the disassembly steps and methods of different specifications are different. The specific tire disassembly method and steps are as follows:

1. First, thoroughly clean the tire, including the tire surface, the contact surface between the wheel and the rim and the bolts and nuts on the wheel, and clean the rust, slag and mud on it. The main purposes of cleaning are: first, to reduce the influence of dirt on repairmen during disassembly; The second is to reduce dirt from entering tires and unnecessary secondary injuries.

2. Before disassembly, lubricate the grooves of bolts and nuts to facilitate disassembly and reduce wear. Use a matching torque wrench, leave space between 2-3 nuts, and remove them diagonally. Diagonal disassembly can effectively reduce the irregular stress of bolts and the fatigue loss of parts. If you choose a motor wrench, you need to adjust the air pressure, and the specific pressure depends on the size of the nut.

3. Place the wheel lock ring upward, release the air in the tire, and push out the valve after the inner tube is deflated. Mark tires and wheels with matching marks. Attention: The gas in the tire must be completely exhausted to avoid accidental injury in the subsequent operation.

4. Insert the straight guide vane between the rim ring and the tire, and press down the bead; Insert the guide vane in the formed gap, so that the end of the guide vane is supported in the rim ring, and the top of the shaft leans against the straight guide vane.

5. While pressing down the bead, move the straight guide vane plate and the bent guide vane plate along the circumference of the wheel, and remove the tapered flange of the lock ring from the tire.

6. Insert the end of the straight guide vane into the notch of the lock ring and press the lock ring out of the groove; Lift the lock ring upward, support the curved guide vane in the rim ring, and insert the tail end of the straight guide vane into the lower end of the lock ring; Hold the lock ring by hand and take it out of the impeller groove with straight guide vanes.

7. Take out the rim ring, turn over the wheel, remove the tire side from the wheel with the help of straight and arc guide vanes, and then erect the wheel. First, take out all the rims from the tire, and knock the wheel out of the tire decisively along the locking part of the wheel with a hammer. You can take out the tire with the inner tube.

Although many tire repair shops now have professional disassembling tools and even professional mechanical equipment, such as truck tire disassembling machine. But the principle of disassembly is the same, so we must be careful and pay attention to safety during the operation.

Second, the truck tire assembly method and steps

After reading the disassembly process, you must say that assembly is not a reversible process of disassembly. This is true, but there are still many details to pay attention to, especially the parts of the inner tube tire, which should be paid special attention to. If it is confirmed that the rim, flange and lock ring match, this is also the reason why it should be labeled when disassembling. If it is not installed correctly, the dynamic balance will fail when driving at high speed, which will accelerate tire wear. The specific assembly steps are as follows:

1. Sprinkle some talcum powder on the inner tube, put the inner tube and rim liner into the outer tire, inflate the inner tube and screw on the valve.

2. Put the tire cushion belt obliquely on the wheel seat, and put the valve into the notch. Be careful not to skew the valve. Lift the tire from the valve side and insert it into the rim.

3. Install the rim rings in turn, put them into the notches of the wheeled vehicle, so that the opening of the lock ring is opposite. First, press one end of the rim ring and then press the other end.

4. Ensure that the edge of the locking ring is under the tire bead. First, inflate the tire pressure to 49KPa, and then inflate the tire pressure to the rated value.

Three. Matters needing attention in disassembly and assembly of truck tires

1. It is forbidden to hit the rim, lock ring, rim ring or tire when or after the tire is inflated.

2. In order to maintain the dynamic balance of the wheels, the old tires should be put back to their original positions before disassembly (that is, the marks of the tires and rims should overlap).

3. During the assembly and disassembly work, the state of all parts of the wheel should be checked at least once a year: the rim ring, lock ring and rim should be free of cracks, sunken rust marks and dirt, and the inner surface of the lock ring should be reliably embedded in the groove of the wheel.

4. It is forbidden to use flammable materials. Lubricating, sealing or contacting the tire bead with gasoline or other flammable materials may cause the tire to explode or the tire or rim to explode separately, resulting in serious injury or death.

With the development of technology, the disassembly and assembly of tires has gradually separated from the manual operation mode of the past masters. The operation of professional equipment and the popularization of professional knowledge make the maintenance and repair of tires more scientific and reasonable. Among them, the tire knowledge popularization activities and tire maintenance competition carried out by Michelin tires have made more users know about tires.