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VALVE CLEARANCE ADJUSTMENT [L8, LF, L3]

id0110a1503600

1. Disconnect the negative battery cable.

2. Remove the tire (RH).

3. Remove the splash shield (RH).

4. Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION [L8, LF, L3, L3 Turbo])

5. Disconnect the oil control valve (OCV) connector.

6. Remove the ventilation hose.

7. Remove the cylinder head cover.

8. Remove the drive belt. (See DRIVE BELT REPLACEMENT [L8, LF, L3].)

9. Remove the joint shaft from the front drive shaft (RH). (See FRONT DRIVE SHAFT REMOVAL/INSTALLATION [L8, LF, L3, MZR-CD (RF Turbo)].)

10. Remove the engine front cover lower blind plug.

11. Remove the engine front cover upper blind plug.

12. Remove the cylinder block lower blind plug.

13. Install the SST as shown.

14. Turn the crankshaft clockwise the crankshaft is in the No.1 cylinder TDC position.

15. Loosen the timing chain using the following procedure.

  (1) Insert a suitable bolt (M6 X 1.0, length 25-35 mm {0.99-1.3 in}) into the engine front cover upper blind plug and tighten it until it contacts the chain tensioner arm, and then rotate it back one turn. (Set the bolt slightly away from the chain tensioner arm so that it does not contact it.)
  (2) Using the cast hexagon on the exhaust camshaft, apply force counterclockwise to facilitate unlocking the chain tensioner ratchet.
  (3) Using a Hex bit socket (2.5 mm {0.098 in}) or T15 Torx bit socket, unlock the chain tensioner ratchet so that it can be lifted up.
  (4) Using the cast hexagon on the exhaust camshaft, apply force in the direction of the engine rotation to increase tension on the chain.

  Note

  • The chain tensioner rack is compressed using the chain tension generated by applying force to the exhaust camshaft in the direction of the engine rotation.

  Note

  • The ratchet has not been unlocked if the bolt cannot be pressed in approx. 5 mm {0.2 in}.

  (5) Screw in the bolt set in Step 1 approx. 5 mm {0.2 in} and secure the tensioner arm with the rack compressed.

  • If the tensioner arm cannot be secured, return the bolt to its original position and repeat the procedure from Step 3.

16. Hold the exhaust camshaft using a suitable wrench on the cast hexagon as shown.

  Caution

  • Perform the work carefully so that the washer does not drop out.

17. Remove the exhaust camshaft sprocket bolt, exhaust camshaft sprocket, and washer as a single unit.

18. Remove the OCV. (With variable valve timing mechanism.)(See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [LF, L3].)

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.

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})

Valve clearance [Engine cold]

  IN: 0.22-0.28 mm {0.0087-0.0110 in}
  EX: 0.27-0.33 mm {0.0106-0.0130 in}

23. Apply the gear oil (SAE No. 90 or equivalent) to each journal of the cylinder head as shown in the figure.

24. Install the camshaft with No.1 cylinder aligned with the TDC position.

25. Apply the gera oil (SAE No. 90 or equivalent) to each journal of the camshaft as shown in the figure.

26. Tighten the camshaft cap bolt with the following two steps.

  (1) Tighten to 5.0-9.0 N·m {51.0-91.7 kgf·cm, 44.3-79.6 in·lbf}.
  (2) Tighten to 14.0-17.0 N·m {1.5-1.7 kgf·m, 10.4-12.5 ft·lbf}.

27. Install the OCV. (With variable valve timing mechanism.)(See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [LF, L3].)

  Caution

  • Install a washer to the fourth or fifth thread of the exhaust camshaft sprocket bolt being careful not to drop the washer.
  • Do not tighten the camshaft sprocket bolt at this stage. Verify the valve timing before performing the bolt tightening.

28. Install the exhaust camshaft sprocket bolt, exhaust camshaft sprocket, and a new washer as a single unit.

29. Install the SST to the camshaft as shown.

Europe

Except Europe

30. Remove the M6 X 1.0 bolt (length 25mm-35mm {0.99-1.37in}) from the engine front cover to apply tension to the timing chain.

31. Turn the crankshaft clockwise until the crankshaft is in the No.1 cylinder TDC position.

32. Hold the exhaust camshaft using a suitable wrench on the cast hexagon as shown.

33. Tighten the exhaust camshaft sprocket bolt.

Tightening torque

  89-95 N·m {9.1-9.6 kgf·m, 65.7-70.0 ft·lbf}

34. Remove the SST from the camshaft.

35. Remove the SST from the block lower blind plug.

36. Rotate the crankshaft clockwise two turns until the TDC position.

  • If not aligned, loosen the camshaft sprocket bolt and repeat the procedure from Step 29.

37. Apply silicone sealant to the engine front cover upper blind plug.

38. Install the engine front cover upper blind plug.

Tightening torque

  10 N·m {101 kgf·cm, 88 in·lbf}

39. 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}

40. Install the new engine front cover lower blind plug.

Tightening torque:

  12 N·m {122 kgf·cm, 106 in·lbf}

41. Connect the front drive shaft (RH) and the joint shaft. (See FRONT DRIVE SHAFT REMOVAL/INSTALLATION [L8, LF, L3, MZR-CD (RF Turbo)].)

42. Install the drive belt. (See DRIVE BELT REPLACEMENT [L8, LF, L3].)

43. Install the cylinder head cover. (See Cylinder Head Cover Installation Note.)

44. Install the ventilation hose.

45. Connect the oil control valve (OCV) connector.

46. Install the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION [L8, LF, L3, L3 Turbo])

47. Install the splash shield (RH).

48. Install the tire (RH). (SeePRECAUTION (SUSPENSION).)