Mercedes S-class W202

1993-2000 of release

Repair and car operation

Mercedes W202
+ 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
- 12. Brake system
   12.2. Antiblocking system – ABS
   12.3. The additional equipment – system ASR
   12.4. Specifications of brake system
   12.5. Overlays of lobbies brake колодок
   + 12.6. Overlays of back disk brakes
   12.7. A support
   12.8. A forward brake disk
   12.9. A back brake disk
   12.10. A brake liquid
   12.11. Removal of air from brake system
   12.12. Brake pipelines / hoses
   12.13. Replacement of brake highways
   12.14. Brake колодки a lay brake
   12.15. Adjustment of a lay brake
   12.16. The stoplight switch
   12.17. Diagnostics of malfunctions of brakes
   + 12.18. Wheels and tyres
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes

12.5. Overlays of lobbies brake колодок Removal

1. Mark with a paint position of forward wheels concerning a nave. Thanks to it отбалансированное the wheel after removal can be put on the place that balancing was not broke. Release wheel bolts, without lifting the car, then put in front the car on supports and remove forward wheels.
2. Pull a hand a support of the brake mechanism outside owing to what brake pistons will a little be wrung out.
3. Open a cover (56) штекерного connections for what raise a screw-driver keeping lateral ledges a little. Be not overzealous thus.
4. Separate штеккер (57) wires of the gauge of deterioration of overlays (S10/1). Thus do not pull for a wire.
5. Unscrew the bottom fixing bolt of the case of the brake piston, keeping directing bolt (37) рожковым a key.
6. Cast away the case of pistons (34) upwards and a wire fasten it to a suspension bracket spring. At откидывании watch that directing bolts were not bent. At all do not use the case of pistons to change an angle of rotation of operated wheels.
7. Take overlays колодок (43) of a support of the brake mechanism. Additional components: 44 – spring скоба; S10/1 – a wire of the gauge of deterioration.
8. Take the gauge of deterioration from the overlay basis. The gauge is usually on an external overlay. In updating "taxi" the gauge costs on all overlays.
9. If wire isolation was wiped, replace the gauge.
The prevention

Change by places of internal and external overlays, and also overlays of the left wheel with overlays right – is inadmissible. It can lead to non-uniform action of brakes. All overlays of one axis vary simultaneously. Various deterioration of overlays cannot cause claims. At a difference between thickness of the internal and external overlay exceeding 2 mm, it is necessary to check up all the same directing bolts of a support on ease of a course and if necessary to replace them.


The prevention

At the removed overlays do not press a brake pedal, differently brake pistons will jump out of the case. If through an oversight it has occurred, remove a support and collect it in a specialised workshop.

1. Clear directing surfaces, a place of landing of an overlay in mine of the case suitable for this purpose a brush from soft metal and a vacuum cleaner, or wipe a rag with spirit. Do not apply for this purpose the means containing mineral oil or the tool with sharp edges. Before installation of overlays feel a brake disk fingers about roughnesses, measure a thickness of a disk.
2. Check up пыльник (45) on cracks. Damaged пыльник urgently replace, since the getting dirt quickly puts out of action a support. The brake mechanism with floating скобой thus should be removed and disassembled in a specialised workshop.
3. Besiege brake pistons спецприспособлением (031). The piece of wood (the hammer handle) will descend also, however thus especially watch to warping the piston and not to damage a surface of pistons and пыльники.

The prevention

At осаживании pistons the brake liquid is squeezed out from brake cylinders in a broad tank. Observe of liquid level in a tank. It is desirable to suck away a brake liquid by means of a siphon.

4. For отсоса apply the plastic bottle used for storage only of a brake liquid. Do not apply drinking bottles. The brake liquid is poisonous, and it cannot be sucked away a mouth. Apply soaking up siphon. After change of overlays level of a brake liquid should not exceed the maximum mark as because of thermal expansion the liquid can be splashed out from a tank. The flowed out liquid, dripping from the main cylinder, corrodes a paint and varnish covering that conducts to corrosion.
The prevention

At the big deterioration of overlays check up ease of a course of pistons. For this purpose insert into a support suitable wooden брусок and ask the assistant to press a brake pedal slowly. Brake pistons should come to light and precipitate easily back. At check the second support should be collected. If through an oversight pistons have jumped out or go hardly, it is necessary to remove a support and to collect it in a specialised workshop.

5. The following stage of works is not obligatory: to prevent a scratch of brakes, it is necessary to grease slightly the back party and end faces of a basis of an overlay (arrow) with lubricant means, for example, Plastilube, Tunap VC 582/S, Chevron SRJ/2, Liqui Moly LM-36 or LM-508-ASC. Greasing should not get on an overlay at all or a brake disk. If necessary there and then wipe lubricant paste, and an overlay clear spirit.
6. Insert both overlays into a support. Thus watch that spring скоба stood in parallel to an overlay upper edge.
7. Put the deterioration gauge on an external overlay.
8. Return the case of pistons in a starting position and screw on a guard new самоконтрящимся a bolt with the moment 35 Н.м. Thus directing bolt keep рожковым a key.
The prevention

Самоконтрящийся the fixing bolt can be applied only once.

9. Twirl a spiral wire of the gauge and connect in штекерном a socket on a support. Close a cover штеккера.
10. Put forward wheels so that the marks put before their removal have coincided. Take wheels. Lower the car, tighten wheel bolts in a crosswise order with the moment 110 Н.м.
The prevention

Vigorously repeatedly понажимайте on a brake pedal, will not feel yet strong resistance.

11. Check up level of a brake liquid in a tank, if necessary add to the maximum mark.
12. Cautiously grind in new brake overlays. For this purpose repeatedly, having dispersed the car to 80 km/h, затормаживайте it till the speed of 40 km/h at not strong pressure upon a pedal. Between braking allow to brakes to cool down a little.
The prevention

Before run in 200 km avoid emergency braking.

13. Overlays brake колодок are special utility refuse and in each case before them to throw out, it is necessary to learn, whether it is authorised.