BMW 3 series E46
Since 1998 of release
Repair and car operation
The BMW of 3 series Е46
+ Cars BMW 3 (Е46)
+ Current leaving and service
+ The engine
+ Systems of cooling, heating
+ Power supply systems, injection and release
+ Engine electric equipment
+ Manual transmission and transmission a line
+ Automatic transmission
+ Coupling and power shafts
- Brake system
Removal and installation brake Pad forward wheels
Removal and installation directing forward brakes
Removal and installation of a brake disk of a forward wheel
Removal and installation brake Pad disk brakes
Removal and installation скобы brakes of back wheels
Removal and installation of a brake disk of a back wheel
Measurement of a thickness of a brake disk
Brake liquid - the basic data and security measures
Removal of air from brake system
Replacement of the brake pipeline
Replacement of a forward brake hose
Check of the amplifier of a brake
Removal and installation Pad a lay brake
Adjustment of a lay brake
Removal and installation of the lever of a lay brake
Removal and installation of a cable of a drive of a lay brake
Removal and installation of the switch of a stoplight
+ Suspension bracket and steering
+ Onboard electric equipment
+ Electric equipment schemes
The brake system consists of the main brake cylinder, the amplifier of a brake and disk brakes of forward and back wheels. The brake hydrosystem has two contours: one contour influences forward wheels, another on the back. Thanks to it at refusal of one of contours car braking is carried out by other contour. Pressure of a liquid in brake system is created in the dual main brake cylinder by pressing a brake pedal.
The tank with a brake liquid is located in an impellent compartment on the left side over the main brake cylinder. It provides with a liquid all brake system. The amplifier of a brake at the block of cylinders accumulates a part of the vacuum created by the engine at всасывании. Through the valve the effort of a pedal of a brake if necessary amplifies vacuum. As the diesel engine has not enough the vacuum created at всасывании, the vacuum is created by the special vacuum pump located on a head of cylinders.
Disk brakes are equipped by supports with one cylinder.
The lay brake is set in motion through тросовые draughts and influences back wheels. As the disk brake is inefficient as lay, on back wheels there are in addition two drum-type brakes which have been built in brake disks. Drum-type brakes are put in action exclusively through the lever of a lay brake.
Systems of stabilisation of stability of the car on road ABS/CBC/ASC + T/MSR/DSC
ABS: the Antiblocking system interferes with blocking of wheels at sharp braking of the car. Thanks to it even during braking the car remains operated.
Continuation ABS is the braking monitoring system on turns СВС (Cornering Brake Control). СВС on signals of four gauges ABS learns that the car moves on turn. If braking occurs on turn, it usually leads to that the car tries, as though to be screwed in turn. This effect is a consequence of increasing loading on a forward axis. The braking monitoring system on turns СВС regulates increase of brake effort in such a manner that it accrues faster on external in relation to turn a forward wheel, than on other wheels. Thus, action, the return to the effect specified above is created. СВС on turns works practically as system of electronic distribution of effort. Thanks to it there is possible an influence on back wheels with the big brake effort.
АSС (the system of automatic stabilisation) reduces a twisting moment both приводных wheels by reduction of capacity of the engine when wheels at car dispersal start to be turned.
In the presence of the monitoring system of effort coupling (+Т) at трогании the car from a place turned wheels are braked. As a result of it the twisting moment is switched to "linked" wheels. The considered system practically operates as electronic blocked differential which is disconnected at speed over 40 km/hour. System ASC use + Т is displayed to the driver by fire of a control lamp.
The system of regulation of traction moment MSR is integrated into system ASC + Т. This system interferes with blocking приводных wheels on equal road at the expense of brake action of the engine at switching on lower transfer or at gas reduction.
At movement of the car with snow chains in deep snow or at трогании from a place from a deep dirt it is expedient to disconnect system ASC + Т by means of the switch on the central console. At repeated inclusion of the specified switch or at following start of the engine system ASC + Т again automatically joins.
The system of the dynamic control of stabilisation DSC is established as the additional equipment on model 328 i. System DSC Monitor constantly spends comparison of current parametres of movement with the parametres of an ideal condition received by a settlement way. If, for example, the car at movement on turn too strongly недоуправляется, capacity of the car and, hence, speed of movement decrease, simultaneously the system brakes a back wheel, internal in relation to turn. Thanks to it the turned forward wheels create more than a lateral direction and the car does not leave turn.
Instructions on systems ABS/CBC/ASC + T/MSR/DSC
The safety scheme in the electronic block of management watches that in the presence of defect, for example, cable breakage, or at too low voltage of the storage battery (more low 10) the system was disconnected. At normal work after ignition inclusion the control lamp lights up for short time and then dies away. If the lamp does not die away and in the course of movement continuously lights up, it specifies in malfunction presence. The car can be maintained further, but the system of electronic regulation is disconnected.
If in the course of movement one or several control lamps on a control panel light up, pay attention to the following:
1 Stop the car for short time, switch off the engine and again start it.
2 Check up pressure of the storage battery. If it less than 10.5 In, charge the battery.
3 Check up, whether plugs of the storage battery are tightened and whether there is a reliable contact.
4 Lift and establish the car on supports. Remove wheels, check up external survey presence of damages of wires of gauges of number of turns of wheels (presence of retyrannies). More careful check of system ABS/CBC/ASC + T/MSR/DSC should be spent by means of special devices. Address to Section Diagnostics of malfunctions. Work it is desirable to spend HUNDRED in conditions.