Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
+ The engine
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
- Brake system
Specifications
Removal of air from brake system
Removal and installation of lobbies brake колодок
Removal and installation колодок brake mechanisms of back wheels
Check of a thickness of a brake disk
Removal and installation of a brake disk/support
Adjustment of a lay brake
Removal and installation of the switch of a stoplight
Removal and installation of a brake hose
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
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Removal and installation of lobbies brake колодок Support FN-3
By means of illustrations, find out execution of the support established on your car.
Forward brake mechanisms FN3
Removal
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- Mark on the tyre a direction of its rotation. Turn away bolts of fastening of a wheel. Lift and establish on supports a forward part of the car and remove a wheel.
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If brake Pads will be established again it is necessary to mark them at removal. Change by places external and internal brake колодок, and also their shift with right on the left wheel is not supposed. All is obligatory brake Pads forward wheels are replaced simultaneously even if deterioration limit has reached brake колодка one party. |
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- Remove covers (arrows on an accompanying illustration) from both directing fingers.
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- Disunite a socket (1) indexes of deterioration brake колодок in the presence of the last. Turn on 90 ° a lock lath of the bottom part of the tip.
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- Take out the bottom part of the tip from the holder.
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- Hook a screw-driver and take out from an aperture (the marksman on an accompanying illustration) a lock spring brake Pads.
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- Turn out from a support both directing fingers.
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- Remove the case of a support and fix its wire to a suspension bracket.
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Do not suppose a tension of a brake hose. |
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- Remove external brake колодку from the directing.
- Take out internal brake колодку with a spring from the brake piston.
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Installation
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At removed brake колодках do not press a brake pedal, otherwise the piston can be squeezed out from the case. In this case a support remove in the complete set and ask it to insert into place on HUNDRED. |
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- Before installation колодок into place check up palpation by fingers a brake disk. In the presence of flutes a disk it is possible to pierce (work HUNDRED) if it still allows a thickness.
- Measure a thickness of a brake disk, address to corresponding Section.
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To disk clearing apply exclusively spirit. Directing surface and landing places колодок in case mine clear a rag. Do not apply for this purpose the tool with sharp edges. Special attention turn on removal of the rests of a sticky film on adjoining surfaces external brake колодок. |
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- Check up duster the piston on presence of cracks. Damaged duster immediately replace, since проникшая the dirt quickly leads to loss of tightness of a support. Thus it is necessary to assort a support (work HUNDRED).
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At the big deterioration brake Pads check up ease of a piston stroke. For this purpose insert into a support wooden брусок and ask the assistant to press a brake pedal slowly. The piston should leave and enter easily. For check other support should be established. Watch that the piston completely has not been squeezed out. At a heavy piston stroke hand over a support in repair on HUNDRED. Press the piston the tool shown on an accompanying illustration. |
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It can be made also by means of wooden бруска (the hammer handle). Thus watch that the piston not to warp the piston and not to damage a piston surface, and also duster. |
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At piston cave-in the brake liquid is squeezed out from the brake cylinder in the tank. Watch a liquid in the tank, if necessary, suck away a liquid by means of a siphon. |
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- For отсасывания a brake liquid apply a plastic bottle which is intended only for this purpose. Do not apply for this purpose a bottle for a drinking liquid! The brake liquid is poisonous and should not be sucked away by a mouth through a hose at all. Apply for this purpose a siphon. At replacement brake колодок level of a brake liquid in the tank should not exceed mark MAX since the liquid at heating extends. The following liquid gets on the main brake cylinder, destroys its covering and results corrosion.
- Before installation new brake колодок carefully clear them and grease with a thin layer литиевой greasings G 052 142 A2.
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- Insert internal brake колодку with about a lock spring into the brake piston.
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Internal brake колодка (has a spring) it is supplied by an arrow. The arrow should specify in a direction of rotation of a brake disk at car movement forward. Incorrect installation (on other party of the car) can lead to noise occurrence. |
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- Remove a protective film from a return plate external brake Pads.
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- Establish external колодку on the directing.
- Establish into place the case of a support and fix it on directing two directing fingers the moment 25Нм.
- Establish into place both covers of fingers.
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- Insert a spring into the support case.
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After installation the lock spring is necessary for pressing into apertures under the directing. At wrong installation deterioration external Pads can not be compensated that will lead to increase in a course of a pedal of a brake. |
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- Fix wheels, observing a direction of rotation of wheels. Lower the car on wheels and only after that tighten fastening bolts cross-wise the moment 120Нм.
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Some times standing strongly press a brake pedal so that to feel resistance. Thus brake Pads adjoin to a disk and occupy the working position. |
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- Check up a brake liquid in the tank, if necessary, add a liquid to mark MAX.
- Cautiously allow to be earned extra new brake колодкам. For this purpose some times brake the car since speed 80 till the speed of 40 km/hour, without pressing strongly a brake pedal. Between braking allow to a brake to be cooled.
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After installation new brake Pads it it is necessary to earn extra. For this purpose the first 200 km of a way do not apply without need sharp braking. |
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In some regions brake Pads should be utilised as a special material. Local authorities should give the necessary information on points of possible recycling. |
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Attention, 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 a brake liquid is filled in? - On the working engine check up tightness. For this purpose press a brake pedal effort 200 – 300 Н (20 – 30 kg) during 10 with. The pedal should not weaken. Check up all joinings on tightness. Support FNR-G60
By means of an illustration find out execution of the support established on your car. In the present subsection differences from support FN-3 are considered only.
Forward brake mechanisms FNR-G60
Removal
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- Fix a brake disk one bolt of fastening of a wheel (the marksman on an accompanying illustration).
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- Hook a screw-driver and remove from the support case a lock spring brake колодок.
- Disunite turn a socket of the index of deterioration brake колодок, pull upwards and disconnect an electric wire.
- Disconnect a brake hose from the holder.
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- Remove covers and turn out both directing fingers.
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- Remove the case of a support and fix its wire to a suspension bracket.
- Take out колодку from the case of a support or remove from the directing.
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Installation
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- Insert brake колодку with a lock spring and the deterioration index into the support case.
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- Insert into a support internal (1) and external (2) brake Pads and establish together on directing and a brake disk.
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- Fix the case of a support with fingers on directing the moment 30Нм. Watch that the brake hose was not braided. Establish covers of fingers.
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- Fix the tip of the index of deterioration and fix a wire in the holder.
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Support С54
By means of an illustration find out execution of the support established on your car. In the present subsection differences from support FN-3 are considered only.
Forward brake mechanisms S54
Removal
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- Disunite turn a socket of the index of deterioration brake колодок, pull upwards and disconnect an electric wire.
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- Turn away bolts from the support case, thus keeping from проворачивания directing fingers.
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- Cast away upwards the case of a support and take out upward brake Pads.
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Installation
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- Establish into place brake Pads.
- Lower downwards the case of a support and tighten new bolts of fastening by the moment 30Нм.
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In the repair complete set there are 4 self-stopped bolts. |
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