Mazda 6. Manual — part 103
VALVE CLEARANCE
B–5
B
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
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
B
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
39. Install the drive belt. (See
40. Install the cylinder head cover. (See
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
69
—
75
{7.1—7.6, 50.9—55.3}
Washer based
bolt
89
—
95
{9.1—9.6, 65.7—70.0}
AME2212W006
AME2212W003
AME2212W012
AME2212W002
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