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33 for tires will be additionally provided in written forms by product division of Chery Company or suppliers, and indicated on process sheet. 2.5 Carry out tire inflation strictly in accordance with specified pressure. During inflating process, air pressure shall not exceed 10% of rated pressure. When performing separate packaging to spare wheel assembly, the rated inflation pressure shall be 3.0 bar, and the spare wheel assembly shall be stored separately from four wheels. Before the four-wheel alignment work, check the air pressure of tires of four wheels and regulate the pressure: 2.3 bar for front wheel, and 2.1bar for rear wheel. 3. Tire Inflation After completion of tire inflation, screw up the protective cap of valve, and then carry out dynamic balancing test. Fit appropriate balance weight at the internal and external fringe of wheel rim as required. It is required that the unbalancedness of the final assembly shall be less than 100 g·cm, which is approximately equivalent to a 5g balance weight at the internal and external fringe of wheel rim. Note: each wheel and each side can use only one balance weight. Additionally, its maximum mass shall not be more than 70g. During assembling process, never hit the balance weight too heavy. Otherwise, replace balance weight in time. In addition, never use the replaced balance weight again. 4. Installation of Wheel and Tire Assy When install wheel and tire assy, firstly, manually screw up the wheel bolt onto the hub for pretension, then use special tools for tightening in accordance with diagonal process. Tightening torque shall be 110±10N.m. It is prohibited to use impact wrench to cause wheel damage, over loose or over tight. It is not allowed to apply grease on wheel bolt. (For the newly-installed wheel and tire assy, after the initial mileage of 100 km, tighten the wheel bolts once to ensure the tightening torque. Checking the tightening torque of wheel bolts is one of routine maintenance.) 5. Method to Tighten the Wheel Nut Tighten the fixing nut in a decussate way, the tightening force shall be approximately equal, then wheel shall be able to turn freely. When carry out final tightening, the wheel shall be on the ground. 6. Installation of Trim Cover Install trim cover or place trim cover as required. When fitting clip- type trim cover, place knock in position by hand or via rubber tools.
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