Chassis system Sincerely convinced 2.1.1.3.4 Front swing arm ball joint inspection 1.Lift the vehicle and support it with a prop, and remove the front swing arm ball pin. Refer to: lifting (traction and lifting), front swing arm and swing arm ball pin (front suspension, removal and installation). 2.Grasp the ball pin end and shell end of the front swing arm ball pin with both hands, move up and down, and observe whether it moves.The movement is usually accompanied by a click sound. If there is free movement, it indicates that it is damaged. Replace the front swing arm ball joint pin assembly.
3.Fix the ball joint pin of the front swing arm, and use a torque wrench to continuously rotate the ball joint pin at a speed of 3 to 5 seconds, and read the torque value of the fifth circle.Rotation torque range: 0.5 ~ 3.0nm.If the torque is not within the range, replace the front swing arm ball pin assembly. 4.After the ball joint pin is replaced, the front wheel alignment should be carried out.Please refer to the general process for information. 2.1.1.3.5 Vibration damping device inspection Note: all cars are equipped with low pressure gas-liquid damper.Such devices cannot be adjusted or refilled. 1.Oil leakage judgment:
It is allowed to have a layer of oil film exudate attached to the front and rear shock absorber. Usually, the oil film will attract attention due to the absorption of a large amount of dust. This phenomenon is normal, and it is not necessary to replace the shock absorber. The real leakage refers to the oil leakage inside the shock absorber, and the oil trace covers the spring tray or the whole damping device. In case of suspected oil leakage, it is necessary to investigate: Confirm that the oil film observed only comes from the shock absorber; The oil leakage is determined according to the criterion for oil leakage of shock absorber. 2.Body sinking: Description:
as the damping device designed by us is hydraulic damping device, it can not be used to carry weight.Therefore, replacing the shock absorber can not solve the problem of vehicle sinking. In case of suspected body sinking, the following investigation should be carried out: After completing the above steps, carry out a road test to confirm the fault raised by the customer. Note:
when one damping device is damaged, it is not necessary to replace it in pairs.In the past, we recommended replacing a pair of shock absorbers if one was damaged.Now, with 32 Inspect Measures Check for minor leaks The strut damper is normal Is the seal in good condition when the strut is fully extended Replace the strut shock absorber Is there too much fluid in the strut shock absorber Replace the strut shock absorber Inspect Measures Check if the car is overloaded Maintain proper load weight Check whether the spring is broken or attenuated Replace the spring Check the tire pressure and chassis connection for looseness Keep the appropriate air pressure to ensure the safety and firmness of the connecting parts