BMW 3 Series E46
since 1998 release
Repair and operation of the car
BMW 3 Series E46
+ BMW 3 cars (E46)
+ Current leaving and service
+ Cooling systems, 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 removal of air from a power steering hydraulic system
Angles of installation of forward wheels. Check of installation of wheels
+ Onboard electric equipment
+ Schemes of electric equipment
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Angles of installation of forward wheels. Check of installation of wheelsThe angles of installation of wheels considerably influence stability of the car, wear of tires and fuel consumption. Distinguish the following angles of installation of wheels:
Disorder is an inclination of a wheel in the vertical plane of rather average line of the car. It can be positive if wheels are inclined outside or negative if wheels are inclined inside. The disorder corner, generally influences uniformity of wear of tires of forward wheels. If disorder of one wheel positive, and another negative, then takes away the car aside at the movement on a straight line.
Convergence – a difference of distances between forward and back edges of wheels. The positive convergence means that wheels are in front located more closely to each other, than behind at measurement at height of an average point of a wheel. The negative convergence means that wheels in front are at bigger distance from each other, than behind.
The cross inclination of an axis of turn of a wheel is a corner between the axis of an inclination of a rotary fist and a vertical which is carried out through a point of fastening of a wheel, looking in the longitudinal direction of the car.
At the expense of corners of disorder and a cross inclination of an axis of turn of a point of a contact of wheels with the road settle down closer to an axis of a rotary fist. It supports a so-called "shoulder of a running in", driving is easier for those. Also blows from roughness of a covering are less transferred to steering.
Corner of a longitudinal inclination of an axis of turn. The axis concerning which there is a turn of a wheel is placed in space so that its lower part is directed forward. Such corner of a longitudinal inclination is called positive. At positive value of a corner self-return of a wheel to average situation after turn improves.
Adjustment of a convergence
1 Establish forward wheels directly. On the helmsman to a shaft and a case of the steering mechanism there is a marking. Establish steering so that the specified markings coincided.
3 After the end of adjustment of a convergence tighten tightening bolts at steering drafts the moment of 80 N • m.