BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car



BMW E30
+ 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



10.2. Specifications

GENERAL INFORMATION

Type of brake fluid
Disk brakes:
Minimum thickness of brake shoes
Minimum admissible thickness of a brake disk (wear limit):
  – lobbies
     • continuous disks
10,7 mm
     • the ventilated disks
20,0 mm
  – back
8,0 mm
The minimum thickness of a brake disk after grinding:
  – lobbies
     • continuous disks
11,1 mm
     • the ventilated disks
20,4 mm
  – back
8,4 mm
Parallelism (difference of two measurements)
0,02 mm
Maximum beating of a disk
0,2 mm
* Extreme thickness is also specified on the disk
Adjusting these pedals of a brake:
  – adjustment of a pedal / rod vacuum amplifier (size A)
125 mm
  – brake pedal height (distance from a pedal to a partition of a motor compartment):
     • the car with the left wheel
235 mm
     • the car with the right wheel
273 mm
  – adjustment of the switch of a signal of braking (size A)
5,0 – 6,0 mm
Emergency brake:
  – minimum thickness of a block of the emergency brake
1,5 mm
  – course of the lever of the emergency brake
5 – 8 clicks

Inhaling moments (N. of m)

Support of a forward disk brake:
  – the directing support bolts
30 – 35
  – bolts of fastening of an arm of the case of a support to a suspension bracket rack
123
Support of a back disk brake:
  – the directing support bolts
30 – 35
  – bolts of fastening of levers of a back suspension bracket on a support
67
Fastening of a brake hose to a support
14 – 17
Nuts of fastening of the main cylinder to the vacuum amplifier
22 – 24
Bolts of fastening of wheels