Before making wheel alignment checks:
- tire pressure and tread wear pattern;
- beating of the wheel and disk;
- clearance in the hub bearings;
- clearance in ball joints of steering rods;
- condition and reliability of fastening of suspension arms and anti-roll bar;
- reliability of fastening of the steering mechanism (steering rack);
- condition and reliability of fastening of suspension shock absorbers;
- suspension height;
- steering wheel return to neutral position (slow return of the steering wheel indicates wedging of suspension parts);
- fuel level (the car must be loaded so as to compensate for the load on the wheels of one side).
Take into account the presence of additional cargo (tool boxes or other permanent cargo). If additional weights are normally carried on the vehicle, they must remain in the vehicle when wheel alignments are made. When measuring angles, follow the equipment manufacturer's instructions. " If there is a rear wheel toe adjustment assembly, make this adjustment first.
Attention: Measurements and adjustment of wheel alignment angles must be carried out with the curb weight of the car and the standard height of the body.
Attention: To obtain correct measurement results, do not apply any force to the wheel during the measurement.
Longitudinal inclination of the kingpin and camber of the front wheels
Attention: measurements (or magnitude) The caster of the kingpin must be corrected for the tilt of the frame.
1. The slope of the frame must be measured with a digital protractor (or its equivalent) on the flat part of the frame at the front and rear wheels.
2. The angle of the frame is considered positive if the rear of the frame is higher than the front. Measurements must be taken on both sides of the frame and the average value taken. The result obtained is added to the measured caster value.
3. The frame angle is considered negative if the rear of the frame is lower than the front. Measurements must be taken on both sides of the frame and the average value taken. The result obtained is subtracted from the measured kingpin pitch.
Positive frame slope | Negative tilt frame |
4. Adjustment of the longitudinal inclination of the kingpin and camber is carried out by rotating the cam bolt and the cam in the slot of the frame bracket to change the position of the transverse wheel suspension arm.
Attention: before measuring the kingpin and camber angles, press the front bumper three times to set the suspension to the normal position.
5. Determine the caster angle of the king pin (2) relative to the vertical (1). Do not forget to correct the result for the angle of the frame.
6. Define positive (2) or negative (3) vertical camber (1).
7. Remove the cottered insert of the adjusting cam. This insert does not need to be installed anymore.
8. Loosen upper control arm adjusting cam bolts.
9. Adjust the caster and camber by turning the bolts. While holding the bolts from rotation, tighten the nuts to the specified torque. Tightening torque 190 Nm.
10. Recheck the wheel alignment angles. After adjusting the camber and kingpin, check and adjust the wheel alignment if necessary.
Front wheel alignment
1. Loosen locknut (2) external tie rod.
2. Rotate the inner tie rod (1) before setting the desired convergence.
3. Tighten locknut (2) external tie rod. Tightening torque 68 Nm.
4. Check the amount of convergence.
Rear wheel alignment
Note: rear wheel toe adjustment is carried out with an adjustment unit.
1 Loosen the locknut (1) transverse traction.
2. Rotate the movable part of the rod until the desired wheel alignment is obtained.
3. Tighten locknut. Tightening torque 65 Nm.
4. Check the amount of convergence, adjust if necessary.
Body Height Check
On models with torsion bar suspension, an adjustment lever is used to adjust the height of the body. There is no adjustment on models with spring suspension: if the height does not correspond to the technical data, there are damage, defects and malfunctions of the suspension components.
The height of the body is determined by measuring the distance between the attachment points of the lower arm to the frame and the imaginary horizontal prima drawn through the lower attachment point of the arm. For convenience, use the usual level.