BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
- 9. Coupling
   9.2. Specifications
   9.3. Coupling check
   9.4. Main cylinder of coupling
   9.5. Coupling pedal
   9.6. The blocking coupling switch
   9.7. Working cylinder of coupling
   9.8. Removal of air from a coupling hydraulic actuator
   9.9. Coupling details
   9.10. Driveshaft
   9.11. Elastic coupling
   9.12. Average support
   9.13. Cardan hinges
   9.14. The forward aligning plug
   9.15. Driveshaft CV JOINT
   9.16. Half shafts
   9.17. CV JOINTS and covers
   9.18. Epiploons of a reducer of a back axis
   9.19. Reducer of a back axis
   9.20. Epiploon of the leading gear wheel of a reducer
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips

9.9. Coupling details


1. Remove transmission.
2. Record coupling, having inserted a mandrel.
3. Find adjusting tags, at their absence designate the provision of coupling on a flywheel.
4. Gradually and evenly release bolts, turn off bolts and remove coupling.


Frictional disk

1. Frictional slip

2. Rivets

3. A tag (it is put from a flywheel)

Wear of details of coupling

1. Normal wear of fingers

2. The increased wear of a diaphragm

3. The increased wear of fingers

4. Breakage or deformation of fingers of a diaphragm spring

5. Distortion of a press disk

6. The increased wear of a press disk

7. The increased wear of fingers

8. The place of the increased wear

Places of check of a drive plate of coupling

1. Bends of springs

2. Rivets

Sizes of the release bearing

And = 49 (±0,4) mm (Fichtel&Sachs bearing),

51,5 (±1,0) mm (SKF bearing)

As a rule, replacement is demanded by only a frictional disk, however it is necessary to check a condition of all details.

1. Remove a flywheel and check a condition of the directing bearing.
2. If the bearing jams at a provorachivaniye, then replace it, having got a stripper and having pressed a mandrel.
3. Check a condition of a surface of a frictional disk. At detection of oiling eliminate a leak, having replaced epiploons. The frictional disk when dismantling should be replaced irrespective of its state. Check a disk beating to establish a condition of a press disk and a casing of coupling.
4. Together with a frictional disk it is necessary to replace also the release bearing. Remove the release bearing (1) from a main shaft, remove a spring (3) and remove the lever (2). Check a condition of the lever and collect knot upside-down.
5. Check wear of the rubbing flywheel surface, having put caliber. At strong wear replace a flywheel.
6. Check a condition of a surface of a press disk, a diaphragm spring and fingers of a spring. When dismantling, or after the considerable run, coupling is recommended to be replaced.


The correct position of the lever of switching off of coupling after assembly

1. Carefully clear a flywheel and coupling. Establish coupling, having combined tags, and wrap bolts by hand.
2. Center a disk by means of a mandrel which has to enter the directing bearing and gradually and evenly tighten coupling bolts. Previously establish a disk on pins (arrow), using the tags put when dismantling.
3. Grease a flute of the release bearing (And yes In – places of lubricant), the rubbing surfaces of a fork and a vent of a main shaft of the check point with refractory lubricant. Install the bearing. Establish transmission.