E39 series BMW 5
since 1996-2001 of release
Repair and car operation
+ Maintenance instruction
+ Current leaving and service
+ Systems of cooling, heating
+ 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
Security measures at work with a safety cushion
Removal and installation of a steering wheel
Removal and installation of the top facing of a steering column
Removal and installation of a tip of steering draft
Removal and installation of steering draft
Removal of air and filling of hydrosystem of the amplifier of a wheel with liquid
Check and adjustment of corners of installation of wheels
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics
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The steering consists of a steering wheel, a steering spindle, gear реечного 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 power steering. The factor of strengthening of a steering drive depends on number of turns of the engine. At high turns the factor of strengthening decreases, at low turns raises.
Some models of the car have the hydraulic booster which factor of strengthening depends on speed movements (Servotronic system). Thanks to it the effort enclosed 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 the road and higher precision of management decreases.
The hydraulic booster consists of the oil pump, the tank of oil and oil pipelines. The oil pump is actuated by a maple 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 safety cushion of the driver is located in a steering wheel. In case of a strong head-on collision the control unit ignites a small charge in an airbag. The gases which were formed thus inflate a safety cushion during several milliseconds. It is enough this time to amortize sharp moving forward the top part of a trunk. Then within several seconds the pillow is blown off, since gases leave through openings in a pillow. On work safety conditions with system of a safety cushion it is necessary to make in BMW firm repair trucks.