4.4.3. Check and adjustment of a convergence

Fig. 4.73. Design of a back suspension bracket (front-wheel car): 1 – car body; 2 – rack assembled; 3 – axis of a back nave; 4 – suspension bracket stretcher; 5 – cross lever; 6 – longitudinal lever; 7 – brake drum; 8 – wheel bearing

Install the car in not loaded state on a horizontal surface.

Establish a steering wheel in the situation corresponding to the rectilinear movement.

Check pressure in tires and if necessary bring to norm, check a condition of disks.

Check a condition of elements of a suspension bracket, they should not have damages, deformation, considerable wear.

Check the size of a road gleam at the left and on the right.

NOTE To prevent possible wrong measurement of a convergence, disorder or tilt angle of a longitudinal axis of turn of a wheel, before check it is necessary to move several times up and down forward and back parts of the car.

Fig. 4.74. Measurement of a convergence of back wheels

Measure a convergence by a template for measurement of a convergence of wheels of 1 (fig. 4.74).

The convergence has to be in the following limits.

Convergence: 6,2 +2 mm.

If the convergence does not meet standard, adjust.

Weaken internal nuts of 1 right and left cross levers.

Fig. 4.75. Adjusting bolt

Adjust a convergence rotating the right and left internal bolts of the cross lever (cam bolts of a fist) 2 on the same corner (fig. 4.75).

After adjustment, tighten the right and left nuts the nominal force of an inhaling, holding bolts from a provorachivaniye a wrench.

Moment of an inhaling of an internal nut of the cross lever No. 2 (back party) (a): 90 N · m.

When checking by a tester of side withdrawal, side withdrawal has to satisfy to the following characteristics.

Extreme value of side withdrawal: 7,0–10,0 mm/m.

If side withdrawal exceeds extreme value, the size of a convergence or the angles of installation of wheels cannot meet standard.