Mazda 3 since 2003
1. Operation and car maintenance
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 WITH / SN in the fulfilled gases
2.2.3. Compression measurement in engine cylinders
2.2.4. Check of a belt of a drive of auxiliary units
2.2.5. General information and safety measures at removal of the power unit
2.2.6. Hermetic removal
2.2.7. Removal and installation of the power unit
2.2.8. Check of the executive mechanism of change of phases of a gazoraspredeleniye (L3)
2.2.9. Removal and installation of the executive mechanism of change of phases of a gazoraspredeleniye (L3)
2.2.10. Chain of a drive of the mechanism of a gazoraspredeleniye
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 zolotnikovy valve (OCV) (L3)
2.2.14. The general repair operations on the power unit
2.2.15. Check of a head of the block of cylinders
2.2.15.1. Check of the directing plug of the valve
2.2.15.2. Measurement of length of the valve
2.2.15.3. Measurement of diameter of a core of the valve
2.2.15.4. Measurement of internal diameter of the directing plug of the valve
2.2.15.5. Measurement of height of a vystupaniye of the directing plug of the valve
2.2.15.6. Replacement of the directing plug of the valve
2.2.15.7. A press fitting of the directing plug of the valve
2.2.15.8. Check and repair of a saddle of the valve
2.2.15.9. Check of a klapanny spring
2.2.15.10. Cam-shaft check
2.2.15.11. Measurement of diameter of a neck of a cam-shaft
2.2.15.12. Measurement of a radial gap of a neck of a cam-shaft
2.2.15.13. Measurement of an axial gap of a neck of a cam-shaft
2.2.15.14. Check of a pusher of the valve
2.2.15.15. Check of the block of cylinders
2.2.15.16. Check of the valve of a maslorazbryzgivayushchy nozzle
2.2.15.17. Piston check
2.2.15.18. Check of a cranked shaft
2.2.15.19. Measurement of size of palpation of a cranked shaft
2.2.15.20. Measurement of diameters of necks of a cranked shaft
2.2.15.21. Measurement of a radial gap in radical bearings of a cranked shaft
2.2.15.22. Check of a lateral gap of a rod
2.2.15.23. Measurement of a radial gap of a rod
2.2.15.24. Check of bolts
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 a drive of the mechanism of a gazoraspredeleniye
2.3. Appendix 1
2.4. Appendix 2
2.5. Appendix 3
2.6. The Z6 engine – a mechanical part
2.7. Greasing system
2.8. Cooling system
2.9. Admission system
2.10. Fuel system
2.11. System of production of the fulfilled gases and system of decrease in toxicity
2.12. Ignition system
2.13. Control system
2.14. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 







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2-2-15-proverka-golovki-bloka-cilindrov.html

2.2.15. Check of a head of the block of cylinders





Fig. 2.136. Dye use at check of the block of cylinders


Execute check of a surface of a head of the block of cylinders by a method of color contrast. Using getting dye, check existence of cracks in chambers of combustion, inlet and final channels and on a surface of a gas joint (fig. 2.136).
In the presence of cracks, replace a head of the block of cylinders or make it (with the subsequent polishing).
Check depth of saddles of valves, radial and axial gaps of bearings of a cam-shaft (see further).

Fig. 2.137. Measurement of a buckling of a head of the block of cylinders


Measure a head of the block of cylinders in six directions for buckling identification (fig. 2.137).
If deformation exceeds a maximum, replace a head of the block of cylinders.
Maximum buckling: 0,10 mm.
Maximum polishing: 0,15 mm.

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2.2.14.5. Dismantling of the block of cylinders (termination)
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2.2.15.1. Check of the directing plug of the valve