Chassis system Sincerely convinced outside of the tire.If the negative camber angle of the vehicle is too large, the inner shoulder of the tire will be worn.The camber angle is not adjustable. (3) Wheel toe in Toe in refers to the inward deflection of the tire from the geometric centerline or thrust line, while the negative toe in refers to the outward deflection of the tire from the geometric centerline or thrust line.The function of toe in is to ensure that the wheels roll in parallel.Toe in can counteract the slight deviation of the wheel support system when the vehicle rolls forward.
Incorrect toe in or negative toe in will cause tire wear and reduce fuel economy.Since each steering and suspension system component wears with the increase of vehicle mileage, it is necessary to increase toe in to compensate for the wear of these components.Always correct the toe in angle last.
(4) Kingpin inclination Kingpin inclination is the inclination of the top of the knuckle from the vertical.Viewed from the front of the vehicle, the kingpin inclination is the angle between the vertical plane and a straight line passing through the center of the strut and the lower ball joint.The kingpin inclination angle helps the vehicle to stay in a straight line and the auxiliary wheels return to the straight ahead position.
(5) Wrap angle Viewed from the front of the vehicle, the wrap angle is the angle between the camber angle and a straight line passing through the center of the strut and the lower ball joint.The wrap angle is calculated according to the angle value.Many positioning platforms do not measure the wrap angle directly.To determine the wrap angle, it is only necessary to subtract the negative camber angle or add the positive camber angle from the steering axis inclination angle.
(6) Grinding radius The grinding radius is the distance between the vertical plane and a straight line passing through the center of the strut and the lower ball joint.The grinding radius belongs to the design characteristics of vehicles.The grinding radius is not adjustable. (7) Wheel misalignment Misalignment is the distance that one front hub and bearing assembly lags behind another.The fault is mainly caused by road obstruction or vehicle collision. (8) Steering angle Steering angle is the angle of each front wheel relative to the vertical direction when the car is turning.
2.1.1.3 General inspection 2.1.1.3.1 General inspection (1) Check all tires for proper inflation pressure and tread wear. (2) Check whether the wheel bearing is loose, whether the steering tie rod ball joint is loose, and check the wheel and tire dynamic balance. (3) Check whether the front and rear suspension, steering gear, control arm and connecting rod are loose or damaged. (4) Check whether the car is overloaded, check the height of the vehicle's head, and check whether there are heavy objects in the trunk. (5) After completing the above steps, carry out a road test to confirm the fault raised by the customer. 2.1.1.3.2 Wheel bearing inspection Note:
do not confuse the loose ball joint of swing arm with that of bearing. Tools: 29