The device, service, repair of Mercedes-Benz C of Class (W-203 c 2000г) - Replacement of blocks of a forward disk brake-//Mercedes Benz - mikbookmarket.ru

Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Specifications
   Replacement of blocks of a forward disk brake
   Removal and installation of a forward support
   Replacement of back brake shoes
   Removal and installation of a back support
   Removal and installation of a brake disk
   Check of a brake disk
   Dual main brake cylinder
   Replacement of brake shoes of the parking brake
   Removal and installation of a cable of a drive of the parking brake
   Removal and installation of the switch of a stoplight
   Air removal from brake system
   Removal and installation of a brake hose
   Check of the amplifier of a brake
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Replacement of blocks of a forward disk brake

Apply the brake shoes recommended by the manufacturer. Address to the Section Acquisition of spare parts of Introduction.

If brake shoes are used again, at removal it is necessary to mark them. Shift of brake shoes from outer side on internal and on the contrary or from the right wheel on left is not allowed. Surely replace all brake shoes of one axis at the same time, even in case the limit of wear was reached only by one of them.


Removal

 PERFORMANCE ORDER

1. Mark with paint the provision of forward wheels concerning naves. It will allow to establish at assembly an otbalansirovanny wheel in its former situation. Weaken bolts of fastening of a wheel before a car poddomkrachivaniye. Lift a forward part of the car, put it on supports and remove forward wheels.

Operation of lifting and car installation on supports is connected with danger! Therefore before carrying out operation familiarize with Poddomkrachivaniye's Section and Introduction towage to the management.


2. Right brake: Take out the tip (1) sensor of wear from the socket. Thus do not pull for a cable (2). Disconnect a wire (3) sensor of wear from holders.

3. Turn out bolts of fastening (4) above and below.

4. Take out a support (1) of directing blocks.

5. Fix a support a tape (2) or a wire on an amortization rack. Thus do not disconnect a brake hose. Otherwise after installation it is necessary to delete air from brake system. Watch that the hose was not tense.

Do not press a brake pedal at the removed support. Otherwise the piston of the brake cylinder will be squeezed out from the case. If the piston was casually squeezed out, remove a support and hand over on HUNDRED for assembly.


6. To protection the piston of the brake cylinder from expression by whetstone of a tree (1).

7. Take out brake shoes (2) of the directing.
8. If the removed brake shoes are applied, mark them ("internal", "external"). Thus, them it is possible awaking to establish on a former place.


Check

 PERFORMANCE ORDER

1. Clear surfaces of sliding and a place of landing of brake shoes on directing a wire brush from light metal, and also wipe a brake disk a rag moistened in alcohol. Do not apply to this purpose mineral solvents or the tool with sharp edges.

To cleaning of a brake apply only alcohol.

2. Before installation of brake shoes check hand fingers a brake disk on existence of flutes. In the presence of flutes a disk it is possible to pierce (work HUNDRED) if the disk has even sufficient thickness. Otherwise replace a disk.
3. Measure thickness of a brake disk as it is described in the Section Check of a brake disk.
4. Check lock brackets, if necessary replace with the new.
5. Check an antisplash cover of the piston on existence of damages. The damaged cover urgently replace, since penetration of dirt can lead to violation of tightness of a support. For this purpose it is necessary to disassemble a support (work HUNDRED).
6. Check, whether brake liquid follows from under the piston. If necessary repair a support on HUNDRED or replace it new.
7. Check also protective cover of directing fingers of a support and in the presence of damages replace.

At big wear of brake shoes check ease of a piston stroke. For this purpose insert into a support wooden whetstone and ask the assistant to press a brake pedal slowly. The piston should be pressed and squeezed out easily. For check other brake shoe and an opposite support should be inserted. At a heavy piston stroke replace a support.


8. Right brake: Take out from the socket on a brake shoe the sensor of wear (1). The damaged sensor of wear replace new. (2) – tip of the sensor of wear.


Installation

 PERFORMANCE ORDER

1. Press the brake piston by means of the adaptation. It can be made also by means of whetstone of a tree of firm breed (the hammer handle). Thus pay special attention to that the piston did not warp and not to damage a protective cover.

By pressing the piston from the brake cylinder in the tank brake liquid is forced out. Watch liquid level in the tank, if necessary suck away liquid from the tank.

To an otsasyvaniye of liquid apply a special bottle for or a plastic bottle which is intended only for storage of brake liquid. Do not apply to this purpose a bottle intended for drinking water! Brake liquid is poisonous and should not be sucked away by a mouth at all. Apply for this purpose the special aspirator. After replacement of brake shoes level of brake liquid in the tank should not exceed MAX mark since liquid when heating extends. Following liquid gets on the main brake cylinder, destroys its paint and varnish covering and leads to corrosion.

2. Insert brake shoes sideways at an angle into lock brackets on directing blocks. If are established already applied before a block watch that they were established on the former places.

On frictional surfaces of a brake disk and brake shoes there should not be no greasing or oil.

3. Insert a support on the place in directing blocks.
4. Screw new being self-stopped bolts at the top of and in the bottom of a support and tighten them the moment 25Нм.
5. Right brake: Enter the tip of the sensor of wear into the socket. Insert a wire of the sensor of wear in holders.
6. Establish into place forward wheels so that the marks put at removal coincided. Previously grease with a thin layer of bearing greasing aligning belt of a disk of a wheel on a nave. Bolts of fastening of wheels do not grease. Rusty bolts replace. Wrap bolts. Lower the car on wheels and tighten bolts cross-wise the moment 110Нм.

Several times, strongly press a brake pedal until notable resistance will be felt. Thus, brake shoes adjoin to a disk and occupy the working situation.

7. Check level of brake liquid in the tank, if necessary add liquid to MAX mark.
8. New brake shoes carefully earn extra. For this purpose several times brake the car from speed of 80 km/h to the speed 9. km/h, slightly pressing a brake pedal. Between braking let's to a brake be cooled. The first 200 km of movement do not apply needlessly strong braking of the car.

In some regions brake shoes should be utilized in a special way. Local authorities provide information on possibility of utilization of a special waste.

Carry out reliability control:

· Whether brake hoses are fixed?
· Whether the brake hose in the holder is fixed?
· Whether unions for air removal are tightened?
· Whether enough of brake liquid is filled in?
· On the working engine check tightness. For this purpose press a brake pedal effort of 200-300 N (20-30 kg) during 10 pages. The pedal should not weaken. Check all accessions on tightness.


Brake mechanisms with a motionless support

On some models 4-piston brakes with a motionless support are in front established. In this section distinction in installation and removal of brakes of such design is described only. Security measures and remarks on check are similar to the earlier given.

Illustrations have informative character and cannot correspond to considered model completely.


Removal

 PERFORMANCE ORDER

1. Mark with paint the provision of forward wheels concerning naves. It will allow to establish at assembly otbalansirovanny wheels in their former situation. Weaken bolts of fastening of a wheel before a car poddomkrachivaniye. Lift a forward part of the car, put it on supports and remove forward wheels.

Operation of lifting and car installation on supports is connected with danger! Therefore before carrying out operation familiarize with Poddomkrachivaniye's Section and Introduction towage to the management.


2. Disunite the socket (1) sensor of wear (2). Thus do not pull for a cable.

At assembly the wire should be laid how it is shown on an illustration.

3. Beat out the corresponding drift (3 mm) two pins outside inside from a support. Remove a shaped spring (1).

4. Take out flat-nose pliers or a screw-driver brake shoes. If they приржавели, the special adaptation (for example is required, to HAZET No. 1966-2).
5. If former brake shoes are applied, mark them ("internal", "external"). Thus it will be possible to establish them on former places.

Do not press a brake pedal at the removed support. Otherwise the piston of the brake cylinder will be squeezed out from the case. If the piston was casually squeezed out, remove a support and hand over on HUNDRED for assembly.


Installation

 PERFORMANCE ORDER

1. By means of the adaptation squeeze out both pistons. It can be made also by means of the hammer handle.

2. For an exception of a gnash of disk brakes reverse sides of brake shoes, and also lateral faces of a return plate (arrows on an illustration) can be greased with a thin layer of brake paste (for example, high-temperature copper paste, Plastilube, Liqui Moly LM-36 or LM-508-ASC). By no means paste should not get on brake shoes or a brake disk. If necessary paste it is necessary to remove and wash out immediately places alcohol.

3. Remove the wear sensor from old brake shoes and insert into new blocks. In the presence of damage of the sensor it is necessary to replace it.
4. Insert brake shoes into a support. If the blocks which were in work are established, check, that they rose on the former places.
5. Insert a cable of the sensor of wear into the socket on a support. Lay a cable according to its route.
6. Establish a new shaped spring and put new pins by means of a drift. A drift hammer against the stop.

Shaped spring and pins surely replace with the new.

7. Establish into place forward wheels so that the marks put at removal coincided. Previously grease with a thin layer of bearing greasing aligning belt of a disk of a wheel on a nave. Bolts of fastening of wheels do not grease. Rusty bolts replace. Wrap bolts. Lower the car on wheels and tighten bolts cross-wise the moment 110Нм.

Carry out reliability control:

· Whether brake hoses are fixed?
· Whether the brake hose in the holder is fixed?
· Whether unions for air removal are tightened?
· Whether enough of brake liquid is filled in?
· On the working engine check tightness. For this purpose press a brake pedal effort of 200-300 N (20-30 kg) during 10 pages. The pedal should not weaken. Check all accessions on tightness.