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

10.8. Main cylinder of brakes

GENERAL INFORMATION

Prevention

It is recommended to replace the removed cylinder new or restored as in case of liquid dribble replacement of details of the old cylinder with new details from a remkomplekt does not yield positive result. As a rule, the old cylinder will be strongly worn-out what it will be possible to be convinced of, having spent considerable time for its dismantling.

Main cylinder and vacuum amplifier of brakes

1. Nutritious tank
2. A tank stopper with the switch of a control lamp of level
3, 6. Vacuum hose
4. Collar
5. The backpressure valve (on models 325i)
7. Collar
8. The backpressure valve (on all models except 325i)
9. Bracket
10. Pusher fork
11. Axis
12. Nut

13. Cover
14. Washer
15. Quencher of pulsations
16. Pusher
17. Filter
18. Sealing ring
19. Restrictive bolt
20. Main cylinder
21. Nuts of fastening of the main cylinder
22. Tank sealant
23. Collar
24. Vacuum amplifier of brakes
25. Knee

Removal

The main cylinder with the attached vacuum amplifier take place in the left part of a motor compartment.

PERFORMANCE ORDER

	1. To remove the main cylinder, disconnect the conducting socket (the shooter from above), disconnect hydraulic actuator tubes (the lower right arrow) and turn off two bolts of fastening (the lower left arrow).
2. Remove as much as possible brake fluid from a tank.
3. Turn off the union of tubes of a hydraulic actuator on the main cylinder, immediately muffle tubes and openings. Take tubes aside.
	4. Disconnect sockets from the main cylinder, turn off nuts of fastening of the cylinder to the vacuum amplifier and remove the cylinder. Remove and replace a sealing rin