Mazda 3 since 2003
1. Operation and car maintenance
2. Engine
3. Transmission
3.1. Coupling
3.2. Mechanical transmission
3.2.1. General information
3.2.2. Check and oil replacement in a mechanical transmission
3.2.3. Removal and installation of the sensor of a speedometer of the car (without anti-blocking system of brakes)
3.2.4. Epiploon replacement (differential)
3.2.5. Removal and installation of the mechanism of gear shifting
3.2.6. Coupling case, dismantling of elements of a case of the main transfer
3.2.7. Check and assembly of components of differential and case of the main transfer
3.3. Automatic transmission
3.4. Driving mechanism
3.5. Tables
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 








3-2-1-obshhie-svedeniya.html

3.2.1. General information

The transmission will transform a torque transferred from the engine, on size and the direction. It is necessary for ensuring optimum speed and passableness of the car, high profitability of operation of the engine and car movement by a backing. Besides, the transmission separates the engine and transmission during a stop and car parking, and also at its movement by inertia with working engine.
All models with mechanical transmission are equipped with a five-speed transmission united in one knot with differential and the main transfer. The torque from the engine is transferred through a transmission and the main transfer to differential which, in turn, distributes it between power shafts.
The five-step mechanical transmission is equipped with the mechanism of synchronization of all transfers.


Cross-section section of a mechanical transmission of the Mazda 3 car
Fig. 3.24. Cross-section section of a mechanical transmission of the Mazda 3 car: 1–leading gear wheel of the 1st transfer; 2–leading gear wheel of the 2nd transfer; 3–leading gear wheel of the 3rd transfer; 4–leading gear wheel of the 4th transfer; 5–leading gear wheel of the 5th transfer; 6–backing gear wheel; 7–a conducted gear wheel of the 1st transfer; 8–a conducted gear wheel of the 2nd transfer; 9–a conducted gear wheel of the 3rd transfer; 10-a conducted gear wheel of the 4th transfer; 11-a conducted gear wheel of the 5th transfer; 12-synchronizer coupling (backing gear wheel); 13-intermediate gear wheel of a backing; 14-differential


Transmission in the block with the main transfer
Fig. 3.25. A transmission in the block with the main transfer: 1–epiploon (differential); 2–sensor of a speedometer of the car; 3–a mechanical transmission in the block with the main transfer; 4–switching mechanism; 5–transmission oil



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3.2.2. Check and oil replacement in a mechanical transmission