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
2.2. 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
2.2.4.1. Check procedure
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 a drive of valves
2.2.4.5. Adjustment of thermal gaps in the mechanism of a drive of valves
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
2.2.16. 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
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
 






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2.2.4.5. Adjustment of thermal gaps in the mechanism of a drive of valves

Disconnect a negative wire of the storage 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 heads of the block of cylinders. Make sure that the engine cold.
Remove a driving belt.
Remove the right incorporated shaft from the intermediate driveshaft.

Fig. 2.78. Bottom cap of a forward cover of the engine: 1–cap


Remove the bottom cap of a forward cover of the engine (fig. 2.78).
Remove the top cap of a forward cover of the engine.

Fig. 2.79. Bottom cap of the block of cylinders: 1–cap


Remove the bottom cap of the block of cylinders (fig. 2.79).

Fig. 2.80. Installation of the special device


Establish the special adaptation (fig. 2.80).
Turn a cranked shaft clockwise to VMT of the piston of the cylinder No. 1.
Weaken a chain of a drive of the mechanism of a gazoraspredeleniye.
а) Using a suitable screw-driver or the similar tool, unblock a ratchet of a natyazhitel of a chain.
б) Turn a cam-shaft of a drive of final valves clockwise, using the corresponding wrench (shestigrannik) and weaken a chain of a drive of the mechanism of a gazoraspredeleniye.

Fig. 2.81. Fixing of a directing chain in the provision of easing


в) Having placed the corresponding bolt (M6 1,0 length of 25-35 mm) in an opening of the top cap of a forward cover of the engine, fix directing to a chain in the provision of easing (fig. 2.81).

Fig. 2.82. Fixing of cam-shafts of a drive of final valves


Fix a cam-shaft of a drive of final valves, using the corresponding key (shestigrannik) (fig. 2.82).

Fig. 2.83. Bottom cap of the block of cylinders: 1–asterisk of a cam-shaft of inlet valves


Remove an asterisk of a cam-shaft of a drive of final valves (fig. 2.83).

Fig. 2.84. Order of weakening of bolts of a cam-shaft


Weaken cam-shaft bolts in stages in that order (fig. 2.84).

NOTE
Head of the block of cylinders and a cover of bearings of a cam-shaft are numbered for simplification of their repeated installation in initial situation at assembly. After removal hold covers together with a head of the block of cylinders from which they were removed. Do not mix a cover.

Remove a cam-shaft.
Remove a valve pusher.
To Vybrerita the corresponding adjusting laying, being guided by the following scheme and the records made during initial check:
new adjusting laying = the removed laying + the measured klapanny gap – a standard klapanny gap.
admission – 0,25 mm;
release – 0,30 mm.
Standard (on the cold engine):
admission – 0,22–0,28 mm (0.25±0.03 mm);
release – 0,27–0,33 mm (0.30±0.03 mm).
Establish a cam-shaft, the piston of the cylinder No. 1 should be in situation VMT.

Fig. 2.85. Order of a tightening of bolts of a cam-shaft


Tighten a cam-shaft bolt in two steps (fig. 2.85):
moment of 5,0-9,0 N · m;
moment of 14,0-17,0 N · m.
Establish an asterisk of a cam-shaft of a drive of final valves (see fig. 2.83).

NOTE
Bolt of an asterisk of a camshaft do not tighten. At first check the moment of opening or valve closing, then tighten a bolt.


Fig. 2.86. Installation of the special adaptation on a cam-shaft


Establish on a cam-shaft the special adaptation (fig. 2.86).
Remove a bolt (M6х1,0, length of 25-35 mm) from a forward cover of the engine to pull a chain of a drive of the mechanism of a gazoraspredeleniye.
Turn a cranked shaft clockwise to VMT of the piston of the cylinder No. 1.
Hold a cam-shaft of a drive of final valves, using a suitable wrench (shestigrannik) (see fig. 2.82).
Tighten a bolt of an asterisk of a cam-shaft of a drive of final valves the moment of an inhaling of 69-75 N · m.
Remove the special adaptation from a cam-shaft.
Remove the special adaptation from an opening of the bottom cap of the block.
Turn a cranked shaft clockwise on two turns before situation VMT. If situation VMT is not reached, weaken a bolt of a pulley of a cranked shaft and perform all operations, since installation of the special adaptation (see fig. 2.80).
Put silicon and organic hermetic on the top cap of a forward cover of the engine.
Establish the top cap of a forward cover of the engine, having tightened it the moment of an inhaling of 10 N · m.
Establish the bottom cap of the block of cylinders, having tightened it the moment of an inhaling of 18-22 N · m.
Establish a new bottom cap of a forward cover of the engine, having tightened it the moment of an inhaling of 12 N · m.
Establish the right intermediate shaft of a drive and the incorporated shaft.
Establish a driving belt.
Establish a cover of a head of the block of cylinders.
Attach a ventilation hose.
Connect the socket of the operating oil valve (OCV).
Connect a high-voltage wire.
Screw spark plugs.
Establish the right mudguard.
Establish the right wheel.

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2.2.5. General information and safety measures at removal of the power unit