BMW 7_ая the E38 series from 1994 to 2002
1. Introduction
2. Governing bodies and operation receptions
3. Settings and routine maintenance of the car
4. Engine
5. Systems of cooling of the engine, heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Manual box of gear shifting and coupling
8.1. Manual box of gear shifting
8.2. Coupling
8.2.1. General information
8.2.2. Removal and coupling installation
8.2.3. Replacement of the vyzhimny bearing and fork of switching off of coupling
8.2.4. Replacement of the main cylinder of coupling
8.2.5. Replacement of the executive cylinder
8.2.6. Removal and installation of a pedal of coupling
9. Automatic transmission
10. Kardanny and power shafts, reducer, differential and stupichny assemblies
11. Brake system
12. Suspension bracket and steering
13. Body
14. Onboard electric equipment
15. Electric equipment schemes



8.2. Coupling

General information

Coupling is intended for a rupture of power communication between the engine and RKPP when switching transfer and, thanks to frictional communication, provides smooth transfer of a torque on a running gear at a start of motion.

Coupling consists from корозины with a press disk and a conducted disk, and also a hydraulic drive with main and executive cylinders.

Coupling components

The basket of coupling by bolts fastens to a flywheel connected with cranked shaft of the engine. Between a press disk and a flywheel there is a conducted disk which nestles on a flywheel the press bearing of the executive cylinder. The conducted disk is connected with primary shaft of RKPP through shlitsevy connection.

When squeezing a pedal of coupling brake liquid from the general tank via the main cylinder of coupling under pressure is transferred in the executive cylinder. Vyzhimna the bearing of the executive cylinder influences petals of a diafragmenny spring. Thus press the disk is taken away from conducted and power communication between the engine and RKPP interrupts. Adjustment of a drive of coupling is not required.

At each inclusion and coupling switching off as a result of power influence there is a wear of frictional overlays of a conducted disk. The conducted disk represents a wearing-out detail, however average term of its service quite big and depends generally on load of the engine and style of driving.

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8.1.4. Major maintenance of a transmission
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8.2.1. General information