Mercedes S-class W202
1993-2000 of release
Repair and car operation
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
- 11. A steering
11.2. The block of an inflatable pillow of safety on a steering wheel
11.3. A steering wheel
11.4. A steering trapeze
11.5. Cuffs of hinges of a steering trapeze
11.6. The pump of the hydraulic booster of a wheel
11.7. Disorder-convergence installation
11.8. Easily and easy
11.9. Maintenance service of system of a steering
11.10. Diagnostics of malfunctions of system of a steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes
Optimum road performance and the minimum deterioration of rubber are reached only in the event that position of wheels is correctly exposed. At the raised and non-uniform deterioration of tyres, and also a road incontience – at bad stability of a direction and insufficient stability on turns it is necessary to address in a workshop, that by means of optical methods to expose disorder-convergence.
Disorder-convergence installation cannot be carried out without the corresponding equipment. Therefore here the basic concepts necessary for installation of disorder-convergence are described only.
As convergence is called the corner on which the wheel plane deviates a longitudinal axis of the car. The positive convergence means that wheels at measurement at height of their centres converge in front a bit more close, than behind. The negative convergence means that wheels in front disperse more than behind.
At car Mercedes both forward, and back wheels have a positive convergence: forward wheels – 0°25 ' (a sports suspension bracket 0°10 '), back wheels – 0°25 '.
Disorder and cross-section inclination шкворня a rotary fist
The forward bridge
Disorder and cross-section inclination шкворня a rotary fist reduce carrying over of pushes by a steering and provide the minimum friction on turns.
Disorder name a corner on which the wheel plane deviates a vertical. Forward wheels, thus, will defend at negative disorder in a point of a contact with road further from each other, than from above. At car Mercedes forward and back wheels have negative disorder.
The cross-section inclination шкворня is a corner between an axis of turn of a fist and a vertical in a point of standing of a wheel if to look in a longitudinal direction of the car.
Disorder and cross-section inclination шкворня a rotary fist in common define a so-called shoulder обкатки. Thanks to corresponding constructive data, the big stability in a direction is reached at braking, in particular, if wheels are on a various road covering (for example if the left wheel brakes on dry, and right – on wet road).
Longitudinal inclination шкворня back
The longitudinal inclination шкворня is a corner between an axis of turn of a fist and a vertical in a cross-section direction back. This inclination substantially influences management of forward wheels at movement on a straight line. The insignificant inclination favours to deviations from a movement direction at driving on bad roads or at a lateral wind, and on turns the wheel badly comes back in average position.
The longitudinal inclination together with disorder is exposed by means of two bolts with the clown on suspension bracket levers.
Preconditions for check
– The ordered pressure of air in tyres;
Check/installation of a positive convergence of forward wheels
Position of forward wheels at the sight of from above
Exact installation of disorder-convergence should be made only in a firm workshop. At unilateral deterioration of tyres basically the convergence should be checked. The convergence is checked, if parts of a steering trapeze acted in film. The convergence can be checked up rather simple means.
The above-stated preconditions for check should be observed.