BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
- 10. Brake system
   10.2. Specifications
   10.3. Anti-blocking system (ABS)
   10.4. Blocks of disk brakes
   10.5. Support of a disk brake
   10.6. Brake disk
   10.7. Blocks of drum brakes
   10.8. Main cylinder of brakes
   10.9. Vacuum amplifier of brakes
   10:10. Cable(s) of the emergency brake
   10:11. Adjustment of the emergency brake
   10:12. Mechanism of the emergency brake
   10:13. Brake pedal
   10:14. Braking signal switch
   10:15. Hoses and lines of a hydraulic actuator of brakes
   10:16. Removal of air from a hydraulic actuator of brakes
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips


10:12. Mechanism of the emergency brake


The mechanism of the emergency brake has to be checked periodically. Install the car on a slope, turn on the emergency brake, include neutral transfer and check that the car is kept only by the emergency brake (pedal of a brake is released). When conducting this check it is necessary to be in the car. It is necessary to check the emergency brake each two years, or at any suspicion for its abnormal work.


Lift the car and establish on supports, remove back wheels.

On cars with back drum brakes checking of thickness of blocks is a part of procedures of periodic service.

On the cars equipped with back disk brakes remove disks. Take a support aside and fix a support by a wire, do not disconnect a tube of a brake.

Check a condition of all details of the emergency brake, existence on them of wear and damages. Blocks of the emergency brake in cars with back disk brakes as a rule do not demand replacement during all term of operation of the car. However, they can wear out owing to the wrong adjustment of the brake system, or because of regular use of the emergency brake for a car stop. The extreme size of wear of blocks of the emergency brake is not normalized, however it is recommended to change them if the residual thickness of blocks less than 1,5 mm. Check a condition of springs and the mechanism of the regulator, and also check a condition of a drum, existence on it deep development of scratches and other damages.

Removal and installation


The procedure given below belongs only to the cars equipped with back disk brakes. On cars with back drum brakes the system of the emergency brake is a component of a back brake.

1. Release bolts of fastening of back wheels, lift a back part of the car and establish on supports. Remove back wheels. Remove brake disks. Every time work only with one party since you can use another as a sample at assembly.
2. Remove a returnable spring of the lower block.
3. Remove the top spring of a block.
4. Remove a spring spring.
5. Remove blocks.
6. Installation is carried out upside-down. Upon termination of the sliding device of blocks has to reach the position specified in a picture.
7. After installation of a brake disk, adjust blocks of the emergency brake. For this purpose wrap two bolts of fastening of a wheel. Turning the regulator, part blocks so far they will not slow down a disk. Then rotate the regulator back so far a disk it will not become free to rotate. Tighten bolts of fastening of wheels with the set moment.