BMW 5 Series E39

since 1996-2001 release

Repair and operation of the car

+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Cooling systems, 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 front 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 fluid
   Removal of air from the 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
+ Schemes of electric equipment
+ System of onboard diagnostics

Measurement of thickness of a brake disk


1. Mark with paint the provision of a wheel concerning a nave. Thanks to it the balanced wheel can be established in former situation. Weaken bolts of fastening of a wheel on the car standing on the earth. Lift and install the car on supports and remove a wheel.

Thickness of a disk has to be measured in the thinnest place.

2. Measure thickness of a brake disk. HUNDRED apply special caliber or a micrometer since as a result of wear of a disk on it the rim is formed to this purpose. Thickness of a disk can be measured also by means of a usual caliper. At the same time it is necessary to enclose on each party of a disk laying (for example, two coins).

Measurement needs to be taken in several places of a brake disk.

3. The sizes of a brake disk are specified in Specifications.
4. If the disk reached the minimum thickness, it needs to be replaced with new.
5. If brake disks are worn-out to minimum admissible thickness, it is possible to establish a set of brake shoes once again.
6. In the presence of cracks or zadir the brake disk needs to be replaced with new.
7. Establish and fix wheels. Do not oil fastening bolts. Establish wheels so that the markings put at removal coincided.
8. Lower the car on wheels, tighten fastening bolts cross-wise the moment of 100 Nanometers.

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