BMW 5 series E39

Since 1996-2001 of release

Repair and car operation

+ Introduction
+ The maintenance instruction
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ The power supply system and release
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
- Suspension bracket and steering
   + Forward suspension bracket
   + Back suspension bracket
   - Steering
      Security measures at work with a safety pillow
      Removal and steering wheel installation
      Removal and installation of the top facing of a steering column
      Removal and installation of a tip of steering draught
      Removal and installation of steering draught
      Hydropump fastening
      Removal of air and filling of hydrosystem of the amplifier of a wheel with a liquid
      Check and adjustment of corners of installation of wheels
+ Body
+ Onboard electric equipment
+ Electric equipment schemes
+ System of onboard diagnostics


The general information

1 — zubchato-reechnyj the steering mechanism
2 — steering draught
3 — a collar
4 — a nut
5 — a collar
6 — a protective cover

7 — a nut
8 — a bolt
9 — a grid
10 — a sealing ring
11 — a lining
12 — block Servotronic
13 — a bolt

The steering consists of a steering wheel, a steering spindle, zubchato-reechnogo the steering mechanism and a steering drive. The steering wheel has carving fastening on a spindle which transfers operating movements to the steering mechanism.

For simplification of driving at a parking there is a wheel hydraulic booster. The factor of strengthening of a steering drive depends on number of turns of the engine. At high turns the strengthening factor decreases, at low turns raises.

Some models of the car have the hydraulic booster which factor of strengthening depends on speed movements (system Servotronic). Thanks to it the effort put to a steering wheel decreases on the standing car. At high speed of movement the factor of strengthening of a wheel that provides the best contact to road and more a management split-hair accuracy decreases.

The hydraulic booster consists of the oil pump, the tank of oil and маслопроводов. The oil pump is set in motion клиновым by a belt. The pump soaks up oil from the tank and submits it under pressure to the steering mechanism where the adjusting element of the hydraulic booster settles down.

The pillow of safety of the driver is located in a steering wheel. In case of a strong head-on collision the management block ignites a small charge in an air cushion. Gases formed thus inflate a pillow of safety during several milliseconds. It is enough this time to amortise sharp moving forward the top part of a trunk. Then within several seconds the pillow is blown off, since. Gases leave through apertures in a pillow. On safety conditions of work with system of a pillow of safety it is necessary to make in firm BMW repair trucks.

Self-stopped nuts necessarily replace with the new. Welding and рихтовочные works on control system elements to spend it is not supposed. Works on system of a pillow of safety should be spent on HUNDRED. Danger of explosion!