E46 series BMW 3

since 1998 of release

Repair and car operation



E46 series BMW 3
+ BMW 3 Cars (Е46)
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ engine Electric equipment
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
- Suspension bracket and steering
   + Forward suspension bracket
   + Back suspension bracket
   - Steering with the hydraulic booster (servoupravleniye)
      Removal and installation of the block of a safety cushion on a steering wheel
      Removal and installation of a steering wheel
      Removal and installation of a tip of steering draft
      Removal and installation of steering draft
      Removal and installation of the pump of the hydraulic booster
      Filling with liquid and air removal from hydrosystem of the amplifier of a wheel
      Corners of installation of forward wheels. Check of installation of wheels
+ Body
+ Onboard electric equipment
+ electric equipment Schemes



2d97642e


Steering with the hydraulic booster (servoupravleniye)

Elements of a steering column and steering wheel

1 — the top shaft
2 — the bottom shaft with the kardanny hinge
3 — elastic connection
4 — the wheel lock

6 — a shaft tube
7 — the top cover of a steering column
8 — the bottom cover of a steering column
11 — a steering wheel


Rotation of a steering wheel is transferred by the driver through a steering column and the steering mechanism, and also steering drafts to car wheels. The steering column can be regulated manually on height and in the longitudinal direction.

The effort necessary for turn of wheels, especially on the standing car, decreases thanks to existence of the hydraulic booster. The power steering consists of the oil pump, the tank of oil and oil pipelines. The oil pump is actuated from the engine through maple a belt with edges. The pump we suck in oil from the tank and under a high pressure submits it to the valve case. The case of the valve is located in the steering mechanism. It has mechanical communication with a steering column and depending on the direction of a rearrangement of a wheel directs oil to the relevant party of the working cylinder. Here oil influences the piston with a gear lath, reducing, thus, effort which is necessary for putting for wheel turn.

In a steering wheel the safety cushion is located. The safety cushion represents the combined bag which is inflated with air at face-to-face collision and thus protects a trunk and the head of the driver from blow about a steering wheel. At face-to-face collision of a certain force in a safety cushion through a monitor the small charge ignites. As a result of explosion gases which during several milliseconds fill an air bag are formed. It is enough this time in order that демпфировать a trunk of the driver directing forward. Then the safety cushion within several seconds again develops, as gases leave a pillow through final openings.

Carrying out welding by it leveling works on steering elements is not allowed. Being self-stopped nuts surely are replaced with the new.


Security measures at the address with a safety cushion

Near a safety cushion of the driver in a steering wheel there is the safety cushion of the forward passenger located over a ware box, lateral safety cushions in the doorway and a safety cushion for the head over doors. It is not allowed to establish on a place of the forward passenger a children's seat or any other adaptation for keeping of children in the direction opposite to movement. Besides, on a door rack, a solar peak or on the dashboard on the right side there should be a plate “a children's seat ahead is not present”. In the absence of the last the driver can be fined by police of Germany.

At removal and installation of the block of a safety cushion it is necessary to observe the following:

1 Disconnect a negative cable (-) the storage battery at the switched-off ignition. The battery is in a luggage compartment behind a cover on the right side. At BMW 316i, 318i cars the battery settles down in an impellent compartment.

As a result of shutdown of the storage battery data from memory of malfunctions of some monitors are erased. If necessary before shutdown of the battery it is necessary to consider these memories of malfunctions. Address to the Section Diagnostics of malfunctions. Work it is desirable to lead HUNDRED in conditions.


2 Isolate a negative pole (-) the storage battery to exclude casual contact.
3 Before safety cushion installation again check, whether the negative cable of the storage battery is disconnected.

If the provided instructions are not carried out, further it can lead to failure of system of a safety cushion.


General measures of safety

- After removal of a safety cushion store it so that the soft party specified upward.
- At connection of the storage battery stay in salon of the car of extraneous people is not allowed.
- If in work the break becomes, it is impossible to leave a safety cushion without supervision.
- Is not admissible to assort the safety cushion block. In the presence of malfunction it will be replaced completely. As the pillow contains explosive, it is necessary to store it reliably. Utilization of a pillow should HUNDRED BMWs are carried out. At all it is not necessary to utilize a pillow independently. There is a danger of explosion!
- To replace the steering wheel containing a safety cushion, it is authorized only on the steering wheel resolved by the manufacturer of the car.
- It is not necessary to paste over, something to draw or otherwise to process the soft party of a safety cushion. It can be cleared only the towel dry or moistened in water, and also a cleaner resolved for application by the manufacturer.
- If the pillow was used as a result of failure, it is necessary to replace its monitor, the block of a pillow and the contact block.
- The block of a safety cushion and a monitor are sensitive to blows. If they fell from height more than 50 cm, they cannot be applied further. If the pillow fell from smaller height it is necessary to check it on HUNDRED.
- The safety cushion is authorized to be checked only on HUNDRED. By no means it is impossible to apply a control lamp, the voltmeter or an ohmmeter to pillow check.
- At carrying out welding works the plug of the welding device should settle down in close proximity to a welding place. It is necessary a negative cable of the storage battery and to isolate a battery pole, to exclude possibility of casual contact. It is necessary расстыковать shtekerny connections of a safety cushion to gas generators.
- It is not necessary to subject even to short-term influence of temperature above +75°С the block of a pillow and a monitor.
- Observe instructions concerning a natyazhitel of a seat belt, address to the Section Natyazhitel of a seat belt. Main data and security measures.
Instructions on security measures at movement
- The safety cushion does not replace a seat belt. Passengers of the car should be fastened by belts, only it provides optimum safety.
- Installation on a seat of the driver of any adaptations for deduction of children is not allowed. Children are more younger than 12 years can to settle down only on a back seat.
- The arrangement between a safety cushion and the person of any subjects is not allowed.