BMW 3 series E46

Since 1998 of release

Repair and car operation

The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Removal and installation brake колодок forward wheels
   Removal and installation directing forward brakes
   Removal and installation of a brake disk of a forward wheel
   Removal and installation brake колодок disk brakes
   Removal and installation скобы brakes of back wheels
   Removal and installation of a brake disk of a back wheel
   Measurement of a thickness of a brake disk
   Brake liquid - the basic data and security measures
   Removal of air from brake system
   Replacement of the brake pipeline
   Replacement of a forward brake hose
   Check of the amplifier of a brake
   Removal and installation колодок a lay brake
   Adjustment of a lay brake
   Removal and installation of the lever of a lay brake
   Removal and installation of a cable of a drive of a lay brake
   Removal and installation of the switch of a stoplight
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Electric equipment schemes

Removal and installation brake колодок disk brakes

Support of a back disk brake

1 — a support
2 — directing brakes
3 — a spring lock
4 — a bolt, 65 Н•м
5 — the union of removal of air
6 — a dustproof cap

7 — a directing finger
8 — a protective stopper
9 — the deterioration gauge
10 — the sealing complete set of a support
11 — the repair complete set of the directing plug
12 — brake Pads (not containing asbestos)


1 Mark a paint position of back wheels concerning a nave. It will allow to establish at assemblage отбалансированные wheels in their former position. Loosen the bolts of fastening of a wheel at the car standing on the earth. Lift a back part of the car, put it on supports and remove back wheels.

If brake Pads will be applied again at removal they are necessary for marking. It is not supposed to interchange the position Pads of the right and left wheel. It can lead to non-uniform braking. It is necessary to apply only Pads firms BMW or Pads, resolved by firm BMW. Necessarily replace all Pads disk brakes of forward wheels simultaneously even if deterioration limit has reached one of колодок.

2 Rasstykujte at the right support a cable of the gauge of deterioration (the marksman on an illustration), thus do not pull for a cable.

3 Remove plastic caps-1 and turn out the screws located under them with internal шестигранником. 2 screws of fastening directing brakes.

4 Remove a screw-driver скобу-3.

5 Remove a support back.

6 Remove external brake колодку.

7 Internal brake колодка it is fixed in the piston by a spring-6.


After removal brake колодок do not press a brake pedal. Otherwise the piston can be squeezed out from the case.

8 If at the deterioration gauge isolation of a contact plate is wiped, isolation of a cable is damaged or the plastic element is worn out, it is necessary to replace the gauge.

9 Clear a brush from easy metal or wipe a rag moistened in spirit, directing surface and a seat for brake колодок. Do not apply for this purpose some the solvents containing mineral oils, or the tool with sharp edges. If Pads will be applied again, they are necessary for clearing also.

10 Before installation brake колодок it is necessary to check up hand fingers presence задиров on a brake disk. At presence задиров it is necessary to replace disks.
11 Measure a thickness of brake disks, address to Section Measurement of a thickness of a brake disk.

12 Check up a dustproof cap-2 on presence of cracks. In the presence of damages it is necessary to replace a cap immediately as проникшие pollution quickly lead to loss of tightness of a support. For this purpose it is necessary to remove a support and to disassemble (work HUNDRED).

13 Press the piston by means of the corresponding adaptation. It can be made бруском of firm wood (the hammer handle). Thus pay special attention on that the piston did not warp also a piston surface, and also a dustproof cap have not been damaged.

At cave-in of pistons from brake cylinders in the tank of a brake liquid level rises. Watch level, if necessary suck away a liquid.

For отсасывания a brake liquid it is necessary to apply a special or plastic bottle which is intended only for this purpose! Do not apply for this purpose bottles for potable water! The brake liquid is poisonous also it it is impossible to suck away in no event a mouth through a hose. Apply for this purpose the special device. After replacement brake колодок liquid level in the tank should not be above a mark the MOVE as at heating the liquid extends. The following brake liquid flows downwards on the main brake cylinder, damages a paint and varnish covering and leads to corrosion.

At the big deterioration brake колодок it is necessary to check up ease of a piston stroke. For this purpose insert wooden брусок into a support and ask the assistant to press a brake pedal slowly. The brake piston should to enter and leave easily. For check carrying out all other supports should be inserted on the places. Watch that the piston completely did not leave. If the piston stroke heavy, a support is subject to repair (work HUNDRED).

Adjoining surfaces of a support cover with paste against squeal of brakes.

For an exception of squeal of disk brakes while in service it is necessary to cover some places of a support with a thin layer of special paste, for example, “Never Seez Compound”.

Paste should not get on dustproof cuffs at all, surfaces of a friction brake колодок or a brake disk. If necessary paste at once wipe spirit, a dustproof cuff replace with the new. A podkladnuju plate brake Pads with paste do not cover.

14 Grease with a thin layer of paste against squeal an adjoining surface of the brake piston to brake колодке.

15 Clear adjoining surfaces-1 and-2 T-shaped heads brake Pads at a support and cover with a thin layer of paste against squeal of brakes.

16 Clear an adjoining surface-3 supports and cover with a thin layer of paste against squeal of brakes in the places shaded on an illustration.

17 Clear скобу at directing T-shaped heads (an arrow on an illustration) and apply a thin film pastes against squeal of brakes in the places shaded on an illustration.

18 Insert a brake head with a spring into the piston.

19 Insert into a support external колодку-9 and put a support on the directing. Watch that Pads have been cleared.

20 Check up visually two bolts of fastening of a support, if necessary clear скобу of pollution. If it is necessary, pass a carving in скобе a tap. The bolts having a rust or damages of a carving, replace. Fix bolts-7 face key-8 on 7 mm the moment 30 Н•м.

Bolts only clear, to grease them it is not necessary.

21 Put into place protective caps of bolts of fastening.
22 Join a socket of the gauge of deterioration on the right party of the car. The wire should pass in a loop of a cover of the union for air removal.

23 Establish a lock spring of a support.

24 Establish back wheels and screw fastening bolts. Bolts do not grease. Wheels establish so that the marks put at removal have coincided. Lower the car on wheels and tighten bolts the moment 100 Н•м.

Some times strongly press a brake pedal in a standing position so that resistance was felt. Thus, brake Pads will occupy the working position.

25 Check up liquid level in the tank. If necessary add to mark MAX.

— 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.

26 Cautiously allow to be earned extra new brake колодкам. For this purpose some times brake the car since speed 80 to 40 km/hour slightly pressing a pedal. Between braking allow to be cooled to a brake.

After installation new brake колодок them it is necessary to earn extra. During movement the first 200 km it is necessary to avoid strong unnecessary braking.

Brake disks in some regions should be utilised as special материл. Local authorities inform drivers on places of possible recycling.