Mazda 6 since 2002
1. Operation and car maintenance
2. Engine
2.1. General description of new engines of the L8, LF and L3 models
2.1.1. Mechanical part of engines
2.1.1.1. Cover of a head of the block of cylinders
2.1.1.2. Head of the block of cylinders
2.1.1.3. Laying of a head of the block of cylinders
2.1.1.4. Block of cylinders
2.1.1.5. Cranked shaft and radical bearing
2.1.1.6. Balancing block
2.1.1.7. Principle of operation of the balancing block
2.1.1.8. Damper of krutilny fluctuations of a cranked shaft
2.1.1.9. Forward cover of the engine
2.1.1.10. Piston
2.1.1.11. Piston rings and piston finger
2.1.1.12. Rod and shatunny bearing
2.1.1.13. The Klapanny mechanism – general information
2.1.1.14. Camshaft
2.1.1.15. Camshaft asterisk
2.1.1.16. Asterisk of a cranked shaft
2.1.1.17. Chain of a drive of the mechanism of a gazoraspredeleniye
2.1.1.18. Natyazhitel of a chain of a drive of the mechanism of a gazoraspredeleniye
2.1.1.19. The valve, a klapanny spring, the maslootrazhatelny cap, the directing plug of the valve
2.1.1.20. Valve pusher
2.1.2. Mechanism of change of phases of a gazoraspredeleniye
2.1.3. Greasing system
2.1.4. Cooling system
2.1.5. Fuel system
2.1.6. System of production of the fulfilled gases and system of decrease in toxicity
2.1.7. Electric equipment of engines
2.2. Mechanical part of engines
2.3. Appendix 1
2.4. Appendix 2
2.5. Appendix 3
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 






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2.1.1.5. Cranked shaft and radical bearing

Fig. 2.8. Crankshafts of engines of the L8, LF and L3 models: 1–leading gear wheel


Crankshafts of engines of the L8 and LF models – pig-iron 5-basic with 4 counterbalances. The crankshaft of the engine of the L3 model – pig-iron 5-basic with 8 counterbalances. The leading gear wheel of a drive of a balancing shaft is established on cranked to a shaft. The usual adjusting shponka is not applied, the effort of an inhaling of bolts of a pulley of a cranked shaft provides fixing of an asterisk of a cranked shaft. At installation of an asterisk of a cranked shaft it is necessary to use the special adaptation for VMT installation of the first cylinder (fig. 2.8).

Fig. 2.9. Masloprovodnye channels of a cranked shaft: 1–the channel for greasing; 2–galtel


The oil pipeline for supply of oil is located to radical necks of a cranked shaft in cranked to a shaft. Necks and galtel of necks of a cranked shaft are strengthened by a nakatka for improvement of loading characteristics.

Fig. 2.10. Top and bottom loose leaves and radical bearing: 1–bolt of fastening of a head of the cylinder; 2–release party; 3–admission party; 4–forward part of the engine; 5–a corner between two valves; 6–inlet channel; 7–inlet channel


The top and bottom loose leaves of radical bearings are made of an aluminum alloy. The top loose leaf of the bearing No. 3 - persistent. The top loose leaves have lubricant flutes and oil channels. Adjusting ledges of the top and bottom loose leaves are absent. Before installation of the top and bottom loose leaves of radical bearings it is necessary to measure and establish them them so that they settled down on the center of a cover of the bearing (fig. 2.10).

Table 2.2 Types of loose leaves of radical bearings, mm

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2.1.1.4. Block of cylinders
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2.1.1.6. Balancing block