BMW 3 of the E46 series

since 1998 release

Repair and operation of the car


BMW 3 of the E46 series
+ BMW 3 Cars (E46)
+ Current leaving and service
- Engine
   - Procedures of repair of the engine
      Removal and installation of the lower cover of a motive compartment
      Removal and installation of a box of an air inlet
      Check of a compression
      Removal and installation of the inlet pipeline
      Removal and installation of a head cylinders / replacement of sealing laying
      Removal and installation of camshafts
      Removal and installation of the vacuum pump
      Removal, installation and tension of a maple belt
   + engine Lubrication system
+ Cooling systems, heating
+ Power supply systems, injection and release
+ Electric equipment of the engine
+ RKPP and transmission line
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schemes of electric equipment


Removal, installation and tension of a maple belt

Address also to the Section Check of a Condition of Driving Ridge Belts.

By means of a wide maple belt with edges the cranked shaft transfers the movement to the pump of cooling liquid and the generator. The 6-cylinder engine on a shaft of the pump of cooling liquid has a radiator fan with the viscous coupling. If there is a conditioner, its rotation is transferred to the compressor from an additional belt with edges. As belts are located one after another, for removal of a back belt it is necessary to take off the belt which is before it previously.

Belts stretch automatically, their pulling up is not required. Usually belt service life not less car service life. It is necessary to replace a belt in the following cases:

- Formation of cracks.
- Emergence of noise, for example, when slipping in case of oil hit.
- In the presence of damages of type: cross cracks in edges, holes in edges, deposits of dirt and inclusions of small stones between edges, a razlokhmachivaniye or wear of lateral surfaces of rubber edges, address also to the Section Check of a Condition of Driving Ridge Belts.

 REMOVAL

If the taken-off belt is used further, it is necessary to mark on it the direction of rotation by chalk.

Replacement of a maple belt of the drive of the compressor of the conditioner

Lifting operation and installations of the car on supports is connected with danger! Therefore before carrying out operation study Poddomkrachivaniye's Section and towage

1 Lift and install the car on supports. Turn off bolts of fastening and remove the lower cover of a motive compartment, address to the Section Removal and installation of the lower cover of a motive compartment.

2 Execution with a hydraulic tension element: Insert a face key into the screw on a tension roller. If there is a protective cap, previously remove it. As a result of slow rotation clockwise the hydraulic tension element-1-contracts. Take off maple a belt.

3 Execution with a mechanical tension element: Wring out a tension element for a hexagon-1-in the direction of an hour hand. Take off maple a belt.

4 Put on pulleys new maple a belt. Thus a tension roller as at removal, turn completely to the right. Klinova the belt has to be aflush with pulleys and should not act sideways.
5 Slowly unload a tension roller. Force of a tension is defined by a tension element. Value of force of a tension is not regulated.
6 Establish the lower cover of a motive compartment. Lower the car on wheels.

Replacement of a maple belt of the drive of the generator

Models 320i, 323i, 328i

Maple the belt sets the generator, the pump of cooling liquid and the pump of the power steering in motion.

7 Models with the conditioner: Remove the radiator fan with the viscous coupling, address to the Section Removal and installation of the fan with the viscous coupling.

8 Uncover with the help a screw-driver a roller (the shooter on an illustration).

9 Insert a face key into the screw on a tension roller and slowly turn it in the direction of an hour hand (an arrow on an illustration). As a result of it the hydraulic tension element is removed. Take off maple a belt.

10 Put on pulleys new maple a belt according to the provided scheme. Thus pull a tension roller as at removal. Klinova the belt has to lie aflush with pulleys and should not act sideways.

At execution with an additional tension roller-1 safety lock of turn on an axis of an additional tension roller has to be recorded in a generator groove.

11 Slowly unload a tension roller. Force of a tension is defined by a tension element. Value of force of a tension is not regulated.

12 Put on a cover a tension roller.

13 Models with the conditioner: Install the radiator fan, address to the Section Removal and installation of the fan with the viscous coupling.

Model 320d

Maple the belt sets the generator, the pump of cooling liquid and the pump of the power steering in motion.

14 Remove radiator blinds, address to the Section Removal and installation of a fan / casing of the fan.

15 Insert a head extender tetrahedron on 1/2 inches as the lever into an opening on a tension element.

Do not apply for this purpose a screw-driver. It can lead to damage of an opening.

16 Slowly turn the head extender in the direction of an hour hand. Thus the tension element in the squeezed state contracts and insert a core, for example, a drill through an opening-1-into the holder's opening.

17 Put on new maple a belt pulleys according to the provided scheme, thus squeeze a natyazhitel, as shown in an accompanying illustration. Klinova the belt has to lie aflush with pulleys and should not act sideways.

Position of the generator can differ from given on an accompanying illustration, but laying of a belt has to be such, as shown in an illustration.

18 Unload a tension roller and remove the lever. Force of a tension is defined by a tension element. Value of force of a tension is not regulated. If the core was applied, take out it for what unload a tension element.
19 Establish radiator blinds, address to the Section Removal and installation of a fan / casing of the fan.