On a new, run-in vehicle in running order and with a payload of 320 kg, which corresponds to the weight of four people and 40 kg of cargo in the trunk, the wheel alignment must have the following values:
- camber 0°±30' (30'±30') *;
- convergence (0±1) mm (1.5±1 mm) *;
- longitudinal angle of inclination of the axis of rotation 1°30'±30' (20'±30') *.
* For equipped vehicle.
Before adjusting the wheel alignment angles, check the air pressure in the tires, the radial and axial runout of the wheel disks (no more than: axial - 1 mm, radial - 0.7 mm), free running (backlash) steering wheel, free play (backlash) in the bearings of the front wheel hubs, as well as the technical condition of parts and suspension assemblies (absence of deformations, destruction and wear of rubber-metal hinges, unacceptable settlement of the upper support of the suspension strut). Faults found are corrected.
After placing the car on the stand just before the corner control «live through» suspension of the car, applying 2-3 times a force of 40-50 kgf, directed from top to bottom, first on the rear bumper, and then on the front. In this case, the wheels of the car must be parallel to the longitudinal axis of the car. The sequence of checking and adjusting the wheel alignment angles is as follows:
- angle of longitudinal inclination of the axis of rotation of the wheels;
- collapse;
- convergence.
Angle of longitudinal inclination of the axis of rotation
If this angle does not correspond to the data given above, change the number of shims 9 (see fig. 85), installed at both ends of the stretch marks 8 suspension. To increase the angle of longitudinal inclination of the axis of rotation, reduce the number of washers on the brace in the front or rear of it. And, conversely, washers are added to reduce the angle, but only in the back of the brace, since this is not always possible in front due to the short threaded part of the brace.
When changing the number of washers on the brace, make sure that the chamfers on the washers face the thrust end of the brace. The same rule is observed when installing the internal thrust washer of the rubber-metal hinge, when the adjusting washers are completely removed. If the requirements are not observed, the bracing nuts may loosen.
Collapse
If the camber angle differs from the norm, then it is adjusted. To do this, loosen the nuts of the upper and lower bolts and, turning the upper adjusting bolt 7 (see fig. 85), set the required angle. At the end of the adjustment, the nuts are tightened to a torque of 9 kgf-m.
Convergence
If the convergence does not correspond to the norm, loosen the nuts 4 (see fig. 101) and, rotating the adjusting rods 5 by the same amount, set the required convergence. Then make sure that the plane B of the ball joint 2 is parallel to the plane G of the bearing surface of the pivot arm 3, after which the nuts 4 are tightened to a torque of 12.3-15.0 kgf-m.