Mazda 3 since 2003
1. Operation and maintenance of the car
2. Engine
2.1. General description of new engines of the L8, LF and L3 models
2.2. Mechanical part of engines
2.2.1. Engines of the L8 and LF models
2.2.2. Verification of the contents of CO/CH in the fulfilled gases
2.2.3. Measurement of a compression in engine cylinders
2.2.4. Check of a belt of the drive of auxiliary units
2.2.5. General information and safety measures at removal of the power unit
2.2.6. Removal of sealant
2.2.7. Removal and installation of the power unit
2.2.8. Check of the executive mechanism of change of phases of gas distribution (L3)
2.2.9. Removal and installation of the executive mechanism of change of phases of gas distribution (L3)
2.2.10. Gas distribution mechanism drive chain
2.2.11. Removal and installation of the operating oil valve (OCV) (L3)
2.2.12. Check of the operating oil valve (OCV) (L3)
2.2.13. Check of operation of the spool-type valve (OCV) (L3)
2.2.14. The general repair operations on the power unit
2.2.14.1. Dismantling of a head of the block of cylinders (beginning)
2.2.14.2. Dismantling of a head of the block of cylinders (termination)
2.2.14.3. Dismantling of the block of cylinders (beginning)
2.2.14.4. Removal and installation of a back epiploon of a bent shaft
2.2.14.5. Dismantling of the block of cylinders (termination)
2.2.15. Check of a head of the block of cylinders
2.2.16. Assembly of the block of cylinders (beginning)
2.2.17. Assembly of the block of cylinders (termination)
2.2.18. Assembly of a head of the block of cylinders
2.2.19. Assembly of the drive of the mechanism of gas distribution
2.3. Appendix 1
2.4. Appendix 2
2.5. Appendix 3
2.6. The Z6 engine – a mechanical part
2.7. Lubrication system
2.8. Cooling system
2.9. System of an admission
2.10. Fuel system
2.11. System of production of the fulfilled gases and system of decrease in toxicity
2.12. System of ignition
2.13. Control system
2.14. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 








2-2-14-1-razborka-golovki-bloka-cilindrov-nachalo.html

2.2.14.1. Dismantling of a head of the block of cylinders (beginning)

Fig. 2.120. Components of the first stage of dismantling of a head of the block of cylinders: 1 – fixing bolts of asterisks of cam-shafts; 2 – asterisks of cam-shafts; 3 – the operating oil valve (OCV) (L3); 4 – covers of cam-shafts; 5 – cam-shafts; 6 – valve pusher; 7 – bolt of fastening of a head of the block of cylinders; 8 – head of the block of cylinders; 9 – laying of a head of the block of cylinders; 10 – block of cylinders


Weaken bolts of fastening of asterisks of cam-shafts (see fig. 2.120) (a bolt of fastening of the mechanism of change of phases of gas distribution), as shown in the figure 2.121.

Fig. 2.121. Weakening of bolts of fastening of asterisks of cam-shafts


Remove asterisks of camshafts. The executive mechanism of change of phases of gas distribution (L3 with the mechanism of change of phases of gas distribution).
Remove the operating oil valve (OCV) (L3 with the mechanism of change of phases of gas distribution).

Fig. 2.122. Sequence of weakening of bolts of fastening of covers of bearings of cam-shafts


Uncover bearings of camshafts, having weakened fastening bolts in three steps in the order specified in the figure 2.122.

NOTE
Before removal of covers of bearings of a cam-shaft check an axial gap of the camshaft and gaps in cam-shaft bearings (see further). Covers of bearings of a cam-shaft are numbered for ensuring correctness of the subsequent assembly. After removal, you hold covers together with a head of the block of cylinders from which they were removed. Do not mix a cover.

Remove cam-shafts.
Snimte pushers of valves.

NOTE
Pushers of valves are numbered for ensuring correctness of the subsequent assembly. After removal you hold valve pushers together with a head of the block of cylinders from which they were removed. Do not mix pushers of valves.


Fig. 2.123. Sequence of weakening of bolts of fastening of a head of the block of cylinders


Weaken bolts of fastening of a head of the block of cylinders for two or three receptions in the order specified in the figure 2.123.

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2.2.14.2. Dismantling of a head of the block of cylinders (termination)