BMW 3 series E30

Since 1983-1994 of release

Repair and car operation

+ 1. The maintenance instruction
+ 2. Maintenance service
+ 3. The engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. An exhaust system
+ 8. Transmissions
- 9. Coupling
   9.2. Specifications
   9.3. Coupling check
   9.4. The main cylinder of coupling
   9.5. A coupling pedal
   9.6. The blocking switch of coupling
   9.7. The working cylinder of coupling
   9.8. Removal of air from a coupling hydrodrive
   9.9. Coupling details
   9.10. A kardannyj shaft
   9.11. Elastic муфта
   9.12. An average support
   9.13. Kardannye hinges
   9.14. The forward aligning plug
   9.15. The SHRUS карданного a shaft
   9.16. Semiaxes
   9.17. SHRUS and covers
   9.18. Epiploons of a reducer of a back axis
   9.19. A reducer of a back axis
   9.20. An epiploon of a leading gear wheel of a reducer
+ 10. Brake system
+ 11. A running gear
+ 12. A body
+ 13. An electric equipment
+ 14. A good advice

9.3. Coupling check


1. Press a disk
2. A frictional disk
3. The lever of deenergizing of coupling
4. The vyzhimnoj bearing
5. The spherical hinge
6. A spring
7. A bolt


1. A flywheel
2. A frictional disk
3. Press a disk and a coupling casing
4. The vyzhimnoj bearing
5. To a nutritious tank
6. The main cylinder of deenergizing of coupling
7. The union for air removal
8. The working cylinder of deenergizing of coupling
9. A pusher
10. The lever
11. The lever of a press disk
12. The directing bearing
13. Коленвал
14. A bolt of fastening of a flywheel

Coupling dry, one-disk, with диафрагменной a press spring and a hydrodrive.


It is recommended to execute following preliminary checks which allow to define a condition of coupling and deterioration of its details.

1. Check up liquid level, if necessary restore (if the tank is empty, add a liquid and pump over a hydrodrive). Define the leak reason.
2. For check of proslipping of coupling press a pedal idling the engine and after some seconds include a reverse gear. The gnash will specify in the strengthened deterioration of press or frictional disks.
3. Check up completeness of deenergizing of coupling. For this purpose on the working engine press a coupling pedal so that the pedal did not reach a floor on 6 mm. Be some times switched from 1st transfer to the back. The complicated switching specifies in deterioration of details. Check up a course of a rod of the working cylinder at completely pressed pedal. For this purpose insert into a special crack a metal strip and press to a rod.
4. Ask the assistant to press a pedal and to release, – the strip thus will leave a scratch which length is equal to a rod course. The rod course should be equal 20 mm. If the course is small, air hit, подтекание cylinder consolidations, or jamming of a disk of coupling on primary to a check point shaft can be the reason.
5. Check up a condition of the plug of an axis of a pedal, be convinced that the pedal freely moves.