S-class W202 Mercedes
1993-2000 of release
Repair and car operation
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
- 12. Brake system
12.2. Anti-blocking system – ABS
12.3. The additional equipment – ASR system
12.4. Specifications of brake system
12.5. Overlays of forward brake shoes
+ 12.6. Overlays of back disk brakes
12.8. Forward brake disk
12.9. Back brake disk
12.10. Brake liquid
12.11. Air removal from brake system
12.12. Brake pipelines / hoses
12.13. Replacement of brake highways
12.14. Brake shoes of the parking brake
12.15. Adjustment of the parking brake
12.16. Stoplight switch
12.17. Diagnostics of malfunctions of brakes
- 12.18. Wheels and tires
12.18.2. Service of wheels and tires
12.18.3. Diagnostics of malfunctions of tires
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes
12.18.2. Service of wheels and tires
Replacement of wheels
At replacement of wheels it is inexpedient to change the direction of rotation of tires. For some tires the direction of rotation is specified by an arrow on lateral face and it should be observed surely.
To tighten wheel bolts only a dinamometrichesky key. Their identical inhaling is thus provided.
To replace tires not separately, and, at least, on one axis. Thus tires with bigger depth of a profile to mount behind.
Possible rust on a surface of a prileganiye of a rim delete with a wire brush. For protection of a wheel against corrosion at each dismantle slightly grease with bearing greasing a place of landing of a disk wheel on a nave in front and behind.
Use of chains of antisliding is allowed only on a back axis. Before installation of chains of antisliding to remove wheel caps. To use only the chains of antisliding resolved by Mercedes firm.
For cars with antiprobuksovochny system ASR the switch of chains of antisliding is used. At adjustment of height of the car to establish the car on the highest road clearance. To go with antisliding chains with a speed no more than 50 km/h. On the snow-covered and free highway from ice to remove antisliding chains.
Care of tires
It is known that tires have so-called "memory", and their unqualified use, for example, fast or frequent moving through stone borders or edges of rails, is quite often shown much later as their damage.
Cleaning of tires
Whenever possible do not clear the tire a vapor jet from the steam-ejecting pump. If a nozzle of the steam-ejecting pump too closely to hold at a tire surface, within several seconds there is a chaotic parabolic destruction of a rubber layer. The tire cleared thus for safety reasons should be replaced.
Tires which long time adjoined to oil or greasing are subject to replacement also. Tires bulk up at first on contact places, and then again accept a normal form and outwardly look intact. However their bearing ability decreases.
Storage of tires
Tires should be stored in a cool, dark and dry place. They should not contact to oil and greasing.
To store tires in lying situation or put on a rim in garage or a cellar.
Before dismantling wheels, slightly increase pressure of air in tires (about 0,3-0,5 bar).
For winter tires use their own ободья since reinstallation of tires on others ободья is connected with additional expenses.
Running in of tires
New tires have especially slippery surface. Therefore new tires are concerns also new spare wheel - it is necessary to roll. At such running in the surface of tires becomes rough as a result of initial wear. The first 300 km it is necessary to go with new tires especially carefully, especially to crude weather.
Wheels – balancing
At each reinstallation of tires of a wheel it is necessary again отбалансировать to compensate various distribution of weight and unevenness of a material.
In the course of driving the imbalance is shown by vibration and rumble. The steering wheel starts then to shiver small.
As a rule, vibration of a steering wheel is shown only in a certain range of speeds and disappears when switching on lower or high transfers.
The such phenomenon of a disbalansirovka can lead over time to damage of axial joints, the mechanism of a steering and shock-absorbers. Surely balance wheels each 20 000 km and after each repair of tires as in the course of wear and repair of tires weight and material distribution changes.
Wrong wear of tires
Non-uniform wear usually arises because of too low or too high pressure of air in tires, but can be also caused by the wrong installation of wheels or their imbalance, and also malfunction of the shock-absorber or a rim.
First of all pay attention to appropriate pressure of air in the tires, thus not less often than each four weeks supervise their condition.
To supervise pressure of air only on cold tires. Pressure of tires raises with their heating at fast driving. However it is not necessary to lower air from warm tires.
At too high pressure of air in tires the protector middle since thus as a result of high internal pressure the tire is more curved on the protector middle more wears out.
At too low pressure of air in tires the protector wears out on tire shoulders more, and the middle of a protector becomes convex inside. Bigger wear of shoulders of tires as a result takes place.
The wrong installation of wheels and their imbalance give a typical picture of wear of tires.