The discrepancy between the actual values measured on the car, the control values specified in table. 7.1 is caused by wear, deformation of suspension parts or deformation of the body.
WARNING: Replacing or repairing suspension parts may result in a change in wheel alignment, so after work, checking the wheel alignment is mandatory.
Check the wheel alignment on an unloaded vehicle, with a full fuel tank, filled with coolant, with normal tire pressure and in the absence of excessive play in the suspension assemblies.
After installing the car on the stand (just before checking corners) «press» vehicle suspension by applying a force of 392-490 N to the front bumper two or three times (40-50 kgf), directed from top to bottom. The wheels of the vehicle must be parallel to the longitudinal axis of the vehicle.
When checking and adjusting the front wheel alignment, first check the caster angle, then the camber angle, and lastly the toe-in.
The angle of longitudinal inclination of the axis of rotation of the front wheel is formed by a vertical line and a line passing through the middle of the upper support of the telescopic strut and the center of the ball bearing sphere fixed on the lower arm. Adjusting the angle of the longitudinal inclination of the axis of rotation is not provided for by the design of the car. If the angle deviates from the nominal value, replace damaged and deformed parts.
The camber angle of the front wheels is characterized by the deviation of the mean plane of rotation of the wheel from the vertical. Camber adjustment of the front wheels is provided only with the use of special bolts in the connection of the shock absorber strut and the steering knuckle.
The convergence of the front wheels is the angle between the plane of rotation of the wheel and the longitudinal axis of the car and is regulated by changing the length of the steering rods.