BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

BMW E30
+ 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

9.2. Specifications

GENERAL INFORMATION

Distance from a pedal edge to a partition	235 +10 mm
Beating of a frictional disk	no more than 0,5 mm
Disk thickness	not less than 7,5 mm
Admissible side plays of flanges:
– Axial side play of a flange of the check point	no more than 0,10 mm
– Radial side play
• check point flange	no more than 0,07 mm
• a reducer flange (it is measured on the aligning fillet)	no more than 0,07 mm
Preliminary tightness of the bearing of an average support (in the direction of a forward part of the car)	4–6 mm
Side play in cardan hinges	no more than 0,15 mm

Inhaling moments (N. of m).

Bolts of fastening of the main cylinder	22
Bolts of fastening of the working cylinder	22
Bolts of fastening of coupling to a flywheel	24
Driveshaft:
– Bolt of an average fork of the cardan hinge	97
– Bolts of fastening of an average support	21
– Blooming plug of the shlitsevy site	10
– Bolts of fastening of the driveshaft to a flange of a reducer of the back bridge:
• a nut with a nylon insert	64
• ridge nut	90
Bolts of the elastic coupling:
– M10 (class 8,8) 777	48
– M10 (class 10,9)	64
– M12 (class 8,8)	81
– M10 (class 10,9)	100
Half shafts:
– M10 bolts without kontrovochny tooth	83
– M10 bolts with kontrovochny tooth:
• a bolt with internal 6-faced deepening	96
• bolts with a 4-faced head	100
– M8 bolts with kontrovochny tooth	64
– M12 bolts	110
Half shaft nut	200
Nut of a flange of the leading gear wheel of a reducer:
– M20 bolt	185 (no more) or to tighten before combination of tags
– M22 bolts	210 (no more) or to tighten before combination of tags