Check of thermal gaps in the mechanism of the drive of valves. Mazda 3 (since 2003 release)
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
2.2.4.1. Procedure of check
2.2.4.2. Replacement of a driving belt
2.2.4.3. Check of an automatic natyazhitel of a driving belt
2.2.4.4. Check of thermal gaps in the mechanism of the drive of valves
2.2.4.5. Adjustment of thermal gaps in the mechanism of the drive of valves
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
2.2.15. 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
 








2-2-4-4-proverka-teplovykh-zazorov-v-mekhanizme-privoda-klapanov.html

2.2.4.4. Check of thermal gaps in the mechanism of the drive of valves

Disconnect a negative wire of the rechargeable battery.
Remove the right wheel.
Remove the right mudguard.
Turn out spark plugs.
Disconnect a high-voltage wire.
Disconnect the socket of the operating oil valve (OCV).
Remove a ventilation hose.
Uncover a head of the block of cylinders. Make sure that the engine cold.
Measure a valvate gap.
For measurement of a valvate gap turn a bent shaft clockwise so that the piston No. 1 was installed in compression step VMT.

Fig. 2.77. Order of measurement of valvate gaps


By means of the special probe measure a valvate gap in a point And (fig. 2.77).
Write down the measured values to choose the corresponding pushers of the valve if their replacement is required further.
Turn a bent shaft on 360 ° clockwise so that the piston No. 4 was installed in compression step VMT.
The same as in the first case, measure a valvate gap in B point (see fig. 2.77).
Standard gap (on the cold engine):
- an admission – 0,22–0,28 mm;
- release – 0,27–0,33 mm.
If valvate gaps does not meet standard, adjust them, or, in case of impossibility of adjustment, replace pushers of valves new.
Establish all removed details into place as it should be, the return to removal.

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2.2.4.3. Check of an automatic natyazhitel of a driving belt
following page"
2.2.4.5. Adjustment of thermal gaps in the mechanism of the drive of valves




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