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attached on each side of each wheel. Avoid heavy impact on weights during assembling, and replace the heavily impacted weights. Replaced weights are not reusable. (5). When installing wheel and tire assembly, first fix wheel bolts on wheel hub and pretighten with hand, then tighten them with a special tool in a diagonal process, tightening torque 110±10N.m. Impact wrench is not allowed to avoid overtightness or undertightness. Lubrication of wheel bolts is prohibited. (For newly installed wheel and tire assembly, tighten wheel bolts after the first 100km to ensure fastening torque. Wheel bolt tightening torque inspection is one of daily maintenance items.) (6). Tighten the set nuts in a diagonal process with the similar tightening torque, which shall allow the free rotation of wheels. Wheels shall be placed on the ground when finally tightening the nuts. (7). Fix or place decorating cover as required. Lock decorating cover shall be fixed by tapping with hands or knocking with a rubber tool.
II. Common Tire Faults 1. Proper Use of Tires Tires are important components of wheel assemblies. Attention shall be paid to following items: (1). One vehicle shall be equipped with tires of the same model made by the same manufacturer. (2). Tires of other unspecified models are not allowed. (3). All tires shall bear the same worn condition. To compensate and relieve the uneven wear among tires, they shall be interchanged periodically in addition to routine inspection and calibration of wheel alignment parameters. Interchange scheme is shown in the figure. Specific interchange shceme may be adopted according to actual wear condition. Recommended interchange mileage is 5000-8000km
2. Common Tire Faults and Diagnosis (1). Lopsided wear |