Kia Sephia/Shuma/Spectra

since 1995 of release

Repair and car operation

KIA of Sefia / Noise/range
+ 2. Engine
+ 3. Greasing system
+ 4. Cooling system
+ 5. Power supply system and release
+ 6. Fuel system
+ 7. Ignition system
- 8. Coupling
   8.1. Specifications
   8.2. Pumping of hydraulic system of a drive of coupling
   8.3. Adjustment of a pedal of coupling
   8.4. Coupling pedal
   8.5. Main cylinder of coupling
   8.6. Working cylinder of coupling
   8.7. Coupling disk
   8.8. Check of the bearing of switching off of coupling
   8.9. Check of a casing of coupling with a press disk
   8.10. Check of a disk of coupling
   8.11. Check of the central bearing
   8.12. Flywheel check
   8.13. Repair of the main cylinder of coupling
   8.14. Repair of the working cylinder of coupling
+ 9. Mechanical transmission
+ 10. Automatic transmission
+ 11. Axes and power shafts
+ 12. Steering
+ 13. Wheels and tires
+ 14. Brake system
+ 15. Suspension bracket
+ 16. Body
+ 17. Central air
+ 18. Electric equipment


8. Coupling



1–coupling pedal;
2–main cylinder of coupling;
3–working cylinder of coupling;
4–bearing of switching off of coupling;
5–fork of switching off of coupling;
6–casing of coupling with a press disk;
7–coupling disk;
8–central bearing;

Coupling is located between the engine and a transmission and intended for separation and connection of the flywheel located on cranked to a shaft of the engine and primary shaft of a transmission.

Coupling consists of a conducted (frictional) disk, a casing of coupling with a press disk and a diafragmenny spring, and the mechanism of switching off of coupling. The frictional disk consists of two ring frictional slips which are strengthened on a nave through dempferny springs.

The Diafragmenny spring mechanism creates effort which unites work of a flywheel, press and conducted disks for ensuring joint rotation, in this case coupling joins and transfers a torque from the engine to a transmission. Management of coupling is carried out by a coupling pedal.

Switching off of coupling is made as follows. As a result of pressing a pedal of coupling the piston in the main cylinder moves, compressing the liquid which pressure on a hose is transferred to the working cylinder of the coupling which piston in turn influences a fork of switching off of coupling. The fork of switching off of coupling moves the bearing of switching off of coupling which presses the center of a diafragmenny spring, thus, releasing effort of inclusion on perimeter of a spring and moves press a disk back. The conducted disk then the shaft of the engine and a shaft of a transmission can rotate independently from each other is thus released.

From two parties of a conducted disk frictional slips are fixed. The leading part of a disk incorporates to a nave through details of a quencher of krutilny fluctuations which provides elastic communication between them. The quencher of fluctuations reduces the dynamic loadings causing a twisting (raskruchivaniye) of shaft of transmission which arise at sharp change of speed of movement of the car, arrival on roughness of the road, sharp inclusion of coupling, and also owing to unevenness of a torque of the engine. Elastic fluctuations of details of transmission lead to emergence of noise in mechanisms and units, and also to vibrations therefore damage of details in case the amplitude of elastic fluctuations reaches considerable sizes is possible. For absorption of energy of elastic krutilny fluctuations the quencher serves.