E39 series BMW 5

since 1996-2001 of release

Repair and car operation

+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
- Brake system
   Anti-blocking system
   Removal and installation of forward brake shoes
   Removal and installation of a brake disk / support of a forward brake
   Removal and installation of back brake shoes
   Removal and installation of back brake supports
   Removal and installation of a brake disk of back wheels
   Measurement of thickness of a brake disk
   Brake liquid
   Air removal from brake system
   Replacement of brake pipelines
   Replacement of a forward brake hose
   Check of the vacuum amplifier of a brake
   Removal and installation of brake shoes of the parking brake
   Adjustment of the parking brake
   Removal and installation of the lever of the parking brake
   Removal and installation of a cable of the parking brake
   Check and replacement of the switch of a stoplight
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics

Removal and installation of a brake disk / support of a forward brake

If the support is disconnected only for removal of a brake disk, do not disconnect a brake hose. Otherwise after installation air should be removed from system. A support suspend on a wire so that not to overwind a hose and not to pull it.


1. Mark with paint the provision of a wheel concerning a nave. Thanks to it the otbalansirovanny wheel can be established in former situation. Unscrew bolts of fastening of a wheel on the car standing on the earth. Lift and establish the car on supports and remove a wheel.
2. Slightly press a pedal of a brake and press it. For this purpose between a pedal and a seat put wooden whetstone, having shifted a seat back and then forward. Thus, after a detachment of the brake pipeline the effluence of brake liquid is excluded from the tank and air hit in system.

3. Disconnect the brake pipeline at the connecting coupling. Otherwise it is impossible to disconnect a brake hose at a support. Address to an accompanying illustration.

Thus a quantity of liquid can flow out. Collect liquid in the capacity intended specially for storage of brake liquid.

4. Turn out bolts of fastening (1) support and remove a support from a brake disk.

5. Turn out the screw of fastening (4) face key of 5 mm.

6. Remove a brake disk.

Ventilated disks отбалансированы. It is not necessary to take out or displace balancing brackets on internal diameter of a brake disk.


For ensuring uniform braking of both wheels brake disks should have a surface with an identical roughness. Therefore surely replace or pierce both disks.
On HUNDRED brake disk it is checked on palpation. The maximum palpation of a disk should not exceed the value presented in Specifications (the established disk means).


1. Measure thickness of a brake disk, address to the Section Measurement of thickness of a brake disk.
2. If on a disk and a nave of a wheel there is a rust, remove it.
3. Clear new disks a nitrothinner.
4. Establish a brake disk on a nave of a forward wheel and fix a face key. Previously turn a disk so that openings under bolts coincided.
5. Establish into place a support with brake shoes.

If the brake hose is attached, watch to overwinding and to stretch it. Check freedom of moving of a brake hose at complete turn of a steering wheel.

6. Fix a support slightly greased bolts the moment of 110 Nanometers.
7. Establish wheels directly. Fix a hose in the holder and attach the brake pipeline a cap nut. Watch that the brake hose was not overwound. Check freedom of moving of a hose at complete turn of a steering wheel.
8. Remove air from brake system, address to the Section air Removal from brake systems.
9. Establish and fix forward wheels. Do not oil fastening bolts. Wheels establish so that the markings put at removal coincided. Lower the car on wheels, tighten fastening bolts cross-wise the moment of 100 Nanometers.
10. Turn a steering wheel to the right and on the left against the stop and check, whether the brake hose freely moves, without touching for adjacent a design.

Several times strongly press a brake pedal so that resistance was felt. Thus brake shoes will nestle on a disk and will occupy the working situation.

12. Check level of brake liquid in the tank. If necessary add it to MAX mark.
Attention, check reliability:
   a) Whether brake hoses are fixed?
   b) Whether the brake hose in the holder is fixed?
   c) Whether the union of removal of air is tightened?
   d) Whether enough brake liquid in the tank?
   e) On the working engine check tightness of system. For this purpose press a brake pedal effort of 200-300 N (20-30 kg) and hold it during 10 pages. The effort of pressure of a pedal of a brake to a foot should not weaken.
   f) Check all connections on tightness.

Brake liquid should be utilized in a special way.