1. First, because many connecting rods are easy to be damaged during disassembly and assembly, they are also difficult to disassemble, and the screws here are relatively tight;
2. Second, once the four-wheel positioning data will definitely change after disassembly, it is necessary to re-position the four-wheel positioning, and the positioning data after disassembly is somewhat inaccurate and will not be as accurate as that from the original factory;
3. Third, the dust jacket will not cause any big impact on the mechanical structure, and it is basically only a dust-proof function. If it does not break, there will be sediment entering. If the years are long, the positioning data is inaccurate, and the shock absorber or other components need to be replaced at the same time, they can be replaced.
