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


10.5. Support of a disk brake



It is recommended to get the restored supports in exchange for removed. If the decision on repair (replacement of details of a support) is made, then get ремкомплект. It is necessary to sort and repair both supports at the same time.

Back support

1. Support assembled
2. Bolt of fastening of an arm of a support
3. Pumping union
4. Dustproof cap
5. Antinoise spring
6. Support guide
7. Wire of a control lamp of wear of a block
8. Bracket of fastening of a cover of a cable
9. Brake disk
10. A bolt with an internal 6-faced head
11. Brake board
12. Bolt
13. Washer
14. Cap
15. Cap
16. Arm
17. Bracket of fastening of a cover of a cable
18. Piston, cuff, cover and spring ring
19. Ремкомплект directing plugs
20. Blocks


1. Lift a forward (back) part of the car, establish on supports, remove a wheel.
2. Disconnect and muffle a brake hose. If the support is removed for access to other details, then do not disconnect a hose.
3. The order of removal of a forward or back support is described in subsection 10.4 as a part of the procedure for replacement of blocks.


1. Remove a spring ring of a dustproof cover and a rubber cover.
2. Remove the piston, having given to the cylinder compressed air from the pump.
3. Check the surfaces of the piston and the cylinder. At existence of damages (scratches, corrosion, vykrashivaniye) replace a support assembled.
4. If these details as it should be, remove a piston cuff, using the thin wooden tool.
5. Remove rubber cuffs.
6. Wash out all details in methyl alcohol or a cleaner of brakes.
7. Using ремкомплект, collect a support as shown below.
8. Dip a new cuff into brake fluid and install in the cylinder.
9. Grease cylinders of supports (except forward supports) and the piston with pure brake fluid. Enter the piston into the cylinder without distortions. Establish a new dustproof cover and fix by a spring ring.
10. At assembly of forward supports grease the piston with pure brake fluid and dress a new dustproof cover on the lower part of the piston. Holding the piston over a support opening, bring edges of a rubber cover to cylinder flutes, enter the piston against the stop, then bring the top edges of a cover to a flute on the piston.
11. Grease with silicone lubricant the rubbing surfaces of guides and bolts and establish them in a support. Establish dustproof covers.


1. Installation of a support is carried out upside-down.

Check a condition of bolts of a support, if necessary replace.

2. Attach a hose and remove air from the understanding contour.