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E39 (1995-2003) E34 (1988-1996) E28 (1981-1988) E12 (1972-1981)
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  • Clutch — general information and device

Clutch — general information and device (BMW 5 Series E34)

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The clutch consists of a driving disc, a driven disc and a hydraulic drive.

The clutch master disk is fixed to the flywheel, which in turn is fixed to the engine crankshaft flange. The master disk and slave disk are located at the engine flywheel.

The gearbox bell houses the clutch fork. It holds a maintenance-free release bearing that exerts pressure on the driven disk when the clutch is released. The clutch fork houses the hydraulic system's slave cylinder. The hydraulic clutch drive operates on brake fluid, which it is supplied with from an expansion tank shared with the brake system.

When the clutch pedal is released, the driven disk is pressed by the driving disk against the flywheel under the force of the diaphragm springs, creating a transmission of torque from the crankshaft to the input shaft of the gearbox.

When the clutch pedal is pressed, the movement of the master cylinder piston creates pressure, which is transmitted through the pipeline to the clutch slave cylinder, which is secured with a flange on the gearbox. The slave cylinder piston exerts pressure through the clutch fork on the release bearing and, overcoming the force of the diaphragm springs of the drive disk, moves it slightly. Thus, the slave disk between the drive disk and the flywheel is released, and the transmission of torque from the engine to the gearbox is interrupted.

1 Slave disk

1 Slave disk
2 Leading disk
3 Release bearing
4 Clutch fork
5 Bolt
6 Ball pin
7 Spring clamp


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Article verified: Polikarpov Saveliy

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БМВ E34: Clutch
Next articles

Removal and installation, clutch check
Bleeding the hydraulic clutch drive
Removal air using a special installation
Removal and installation the release bearing
Removal and installation the clutch slave cylinder


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BMW E39 (1995-2003) 
  • General information
  • Governing bodies
  • Manual
  • Maintenance
  • Power unit
  • Engine repair
  • Lubrication system
  • Cooling system
  • Ignition system
  • Supply system
  • Injection system (gasoline)
  • Injection system (diesel)
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Front axle
  • Rear axle
  • Chassis
  • Steering
  • Brake system
  • Wheels and tires
  • Body
  • Interior
  • Exterior
  • Heating system
  • Electrical equipment
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  • Windscreen wipers
  • Electrical circuits
BMW E34 (1988-1996) 
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  • Manual
  • Maintenance
  • Power unit
  • Engine repair
  • Ignition system
  • Engine lubrication system
  • Cooling system
  • Fuel system (gasoline)
  • Fuel system (diesel)
  • Exhaust system
  • Transmission
  • Clutch
  • Car gearbox
  • Chassis
  • Front and rear suspension
  • Steering
  • Brake system
  • Body
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  • Interior
  • Electrical equipment
  • Heating system
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BMW E28 (1981-1988) 
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  • Manual
  • Maintenance
  • Power unit
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  • Engine overhaul
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  • Supply system
  • Ignition system
  • Control system
  • Transmission
  • Clutch
  • Manual gearbox
  • Automatic gearbox
  • Transmission line
  • Chassis
  • Steering
  • Front suspension
  • Rear suspension
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  • Specifications
  • Power unit
  • Engine repair
  • Cooling and lubrication system
  • Supply system
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  • Fuel injection system
  • Ignition system
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