BMW 7_aya the E38 series from 1994 to 2002
1. Introduction
2. Governing bodies and methods of operation
3. Settings and routine maintenance of the car
4. Engine
5. Cooling systems of the engine, heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Manual box of gear shifting and coupling
9. Automatic transmission
10. Cardan and power shafts, reducer, differential and stupichny assemblies
11. Brake system
11.1. General information and security measures
11.2. Replacement of brake shoes
11.3. Removal and installation of brake disks
11.4. Removal and installation of supports
11.5. Replacement of brake shoes of the parking brake and their razzhimny mechanism
11.6. Adjustment of the parking brake
11.7. Removal and installation of cables and pedal of the drive of the parking brake
11.8. Removal of D/V of stoplights and pedal of a working brake
11.9. Removal and GTTs installation and its tank
11:10. Removal and installation of the one-pass valve of the vacuum amplifier
11:11. Removal and installation of the vacuum amplifier
11:12. Removal and installation of wheel sensors
11:13. Removal and installation of an electronic control unit of the ABS/ASC+T/DSC systems
11:14. Removal and installation hydromodulator of the ABS/ASC+T/DSC systems
11:15. Removal and installation of sensors of cross acceleration of DSC3
12. Suspension bracket and steering
13. Body
14. Onboard electric equipment
15. Schemes of electric equipment



11-tormoznaya-sistema.html

11. Brake system

Specifications

General information

Brake system With double diagonal division of contours, with disk brake mechanisms of all wheels
Pressure in brake lines, atm
  • At effort to pedals of a brake of 500 N (the engine is switched off)
28 ÷ 33
  • At effort to pedals of a brake of 200 N (the engine is started)
75 ÷ 90
The maximum admissible pressure drop within 2 min. 8%
Maximum admissible difference of thickness 0.01
Ra of working surfaces of brake disks and drum of the parking brake, micron 0.5 ÷ 3.5
Thickness of overlays of brake shoes at turning on of the alarm system about their wear, mm 3.0
Minimum thickness of frictional overlays of the parking brake, mm 1.5
Diameter of a drum of the parking brake, mm 180
Radial beating of a working surface of the reel of the parking brake, mm 0.1

Brake mechanisms of forward wheels

Outer diameter of a brake disk, mm
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL 316
Models 740i/iL 324
Models 740d, 750i/iL 334
Minimum thickness of brake disks, mm
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL 26.4
Models 740i/iL 28.4
Models 740d, 750i/iL 30.4

Brake mechanisms of back wheels

Axial beating of a working surface of a brake disk (on the largest diameter), mm
At the established disk 0.2
At the removed disk 0.04
Outer diameter of a brake disk, mm
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL 324
Models 740d, 750i/iL 328
Minimum thickness of brake disks, mm
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL 10.4
Models 740d, 750i/iL 18.4

Efforts of tightening of threaded connections, Nanometer

Brake drum / disk to a wheel nave 16
Support (forward) to a rotary fist 110
Support (back) to the longitudinal lever to a wheel bearing suspension bracket/support 67
The directing support finger 30
The wheel brake cylinder to a guide of brake shoes of a back wheel 10
Guide of back brake shoes to the longitudinal lever to a suspension bracket/support of the wheel bearing 65
Couplings of brake tubes and hoses 18
Brake hose to a support 19
GTTs to the vacuum amplifier of brakes 26
The ABS control unit to the hydromodulator 3
Pressure sensor to the hydromodulator 20
The wheel sensor to a rotary support / support of the wheel bearing 9
The sensor of cross acceleration to a body 8.6


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10.7. Replacement of boots of power shafts
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11.1. General information and security measures