Mazda 6. Manual - part 103

VALVE CLEARANCE

B–5

16. Install the tire (RH).

End Of Sie

VALVE CLEARANCE ADJUSTMENT

A6E221212111W02

1. Disconnect the negative battery cable.
2. Remove the tire (RH).
3. Remove the splash shield (RH).
4. Remove the spark plugs. (See

G–10 SPARK PLUG REMOVAL/INSTALLATION

5. Remove the high-tension lead.
6. Remove the oil control valve (OCV) connector.
7. Remove the ventilation hose.
8. Remove the cylinder head cover.
9. Remove the drive belt. (See

B–3 DRIVE BELT REPLACEMENT

10. Remove the joint shaft from the front drive shaft (RH). (See

M–17 DRIVE SHAFT REMOVAL/INSTALLATION

11. Remove the engine front cover lower blind plug.

12. Remove the engine front cover upper blind plug.
13. Remove the cylinder block lower blind plug.

14. Install the SST as shown.
15. Turn the crankshaft clockwise the crankshaft is in

the No.1 cylinder TDC position.

AME2212W002

AME2212W003

AME2212W004

B–6

VALVE CLEARANCE

16. Loosen the timing chain.

(1) Using a suitable screwdriver or equivalent

tool, unlock the chain tensioner ratchet.

(2) Turn the exhaust camshaft clockwise using a

suitable wrench on the cast hexagon and
loosen the timing chain.

(3) Placing the suitable bolt (M6 X 1.0 length

25mm—35mm {0.99in—1.37in}) at the
engine front cover upper blind plug, secure
the chain guide at the position where the
tension is released.

17. Hold the exhaust camshaft using a suitable

wrench on the cast hexagon as shown.

18. Remove the exhaust camshaft sprocket.

19. Loosen the camshaft cap bolts in several passes

in the order shown.

Note

• The cylinder head and the camshaft caps

are numbered to make sure they are
reassembled in their original position. When
removed, keep the caps with the cylinder
head they were removed from. Do not mix
the caps.

20. Remove the camshaft.
21. Remove the tappet.
22. Select proper adjustment shim.

AME2212W005

AME2212W006

AME2212W007

AME2212W008

VALVE CLEARANCE

B–7

New adjustment shim

= Removed shim thickness + Measured valve clearance - Standard valve clearance (IN: 0.25 mm

{0.0098 in}, EX: 0.30 mm {0.0118 in})

Standard [Engine cold]

IN: 0.22—0.28 mm {0.0087—0.0110 in} (0.25

±0.03 mm {0.0098±0.0011 in})

EX: 0.27—0.33 mm {0.0106—0.0130 in} (0.30

±0.03 mm {0.0118±0.0011 in})

23. Install the camshaft with No.1 cylinder aligned with the TDC position.
24. Tighten the camshaft cap bolt using the following

two steps.
(1) Tighten to 5.0—9.0 N·m {51.0—91.7 kgf·cm,

44.3—79.5 in·lbf}.

(2) Tighten to 14.0—17.0 N·m {1.5—1.7 kgf·m,

10.4—12.5 ft·lbf}.

25. Install the exhaust camshaft sprocket.

Note

• Do not tighten the bolt for the camshaft

sprocket during this step. First confirm the
valve timing, then tighten the bolt.

26. Install the SST to the camshaft as shown.

European countries

Except European countries
27. Remove the M6 x 1.0 bolt (length 25mm—

35mm {0.99in—1.37in}) from the engine front
cover to apply tension to the timing chain.

28. Turn the crankshaft clockwise the crankshaft is in

the No.1 cylinder TDC position.

AME2212W009

AME2212W007

AME2212W010

AME2212W011

B–8

VALVE CLEARANCE

29. Hold the exhaust camshaft using a suitable

wrench on the cast hexagon as shown.

30. Tighten the exhaust camshaft sprocket lock bolt.

N·m {kgf·m, ft·lbf}

31. Remove the SST from the camshaft.
32. Remove the SST from the block lower blind plug.
33. Rotate the crankshaft clockwise two turns until

the TDC position.

• If not aligned, loosen the crankshaft pulley lock bolt and repeat from Step 14.

34. Apply silicone sealant to the engine front cover upper blind plug.
35. Install the engine front cover upper blind plug.

Tightening torque:
10 N·m {1.0 kgf·m, 7.4 ft·lbf}

36. Install the cylinder block lower blind plug.

Tightening torque:
18—22 N·m {1.9—2.2 kgf·m, 13.3—16.2 ft·lbf}

37. Install the new engine front cover lower blind

plug.

Tightening torque:
12 N·m {1.2 kgf·m, 8.9 ft·lbf}

38. Connect the front drive shaft (RH) and the joint

shaft. (See

M–17 DRIVE SHAFT REMOVAL/

INSTALLATION

)

39. Install the drive belt. (See

B–3 DRIVE BELT

REPLACEMENT

40. Install the cylinder head cover. (See

B–17

Cylinder Head Cover Installation Note

41. Install the ventilation hose.
42. Install the oil control valve (OCV) connector.
43. Install the high-tension lead. (See

G–10–1 HIGH-TENSION LEAD REMOVAL/INSTALLATION

44. Install the spark plugs. (See

G–10 SPARK PLUG REMOVAL/INSTALLATION

45. Install the splash shield (RH).
46. Install the tire (RH).

End Of Sie

Bolt type

Tigtining torque}

Bolt and washer
assembly

—

{7.1—7.6, 50.9—55.3}

Washer based
bolt

—

{9.1—9.6, 65.7—70.0}

AME2212W006

AME2212W003

AME2212W012

AME2212W002

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