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Valve Clearance: Adjustment

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. DRAIN ENGINE COOLANT (See  REPLACEMENT  ) 
  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag activation.
  3. REMOVE V-BANK COVER (See  REMOVAL  ) 
  4. REMOVE AIR CLEANER HOSE ASSEMBLY (See  REMOVAL  ) 
  5. REMOVE DRIVE BELT (See  REMOVAL   ) 
  6. REMOVE OIL COOLER PIPE (See  REMOVAL   ) 
  7. REMOVE IGNITION COIL ASSEMBLY (See  REMOVAL  ) 
  8. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH (See  REMOVAL   ) 
  9. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH (See  REMOVAL   ) 
  10. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY RH (See  REMOVAL   ) 
  11. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH (See  REMOVAL   ) 
  12. SET NO. 1 CYLINDER TO TDC/COMPRESSION 
    1. Turn the crankshaft damper, and align its groove with timing mark "0" of the No. 1 timing belt cover.
      Fig 1: Aligning Crankshaft Damper With Timing Mark "0"
      G04435585Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the timing marks of the camshaft timing pulleys and timing belt rear plates are aligned. If not, turn the crankshaft 1 complete revolution (360°) and align the marks as above.
      Fig 2: Checking Timing Marks Of Camshaft Timing Pulleys & Timing Belt Rear Plates Are Aligned
      G04435586Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSPECT VALVE CLEARANCE 
    1. Check only the valves indicated.
      1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.

        Standard valve clearance (Cold) 

        VALVE LIFTER AND CAMSHAFT

        Valve Specified Condition
        Intake 0.15 to 0.25 mm (0.006 to 0.010 in.)
        Exhaust 0.25 to 0.35 mm (0.010 to 0.014 in.)
        Fig 3: Measuring Clearance Between Valve Lifter & Camshaft
        G04435587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Record valve clearance measurements that are out of the specified range. These measurements will be used later to determine the size of the adjustment shim to be installed.
    2. Turn the crankshaft 1 revolution (360°) and align the marks.
    3. Check only the valves indicated in Fig 4 . Measure the valve clearance.

      Standard valve clearance (Cold) 

      VALVE CLEARANCE

      Valve Specified Condition
      Intake 0.15 to 0.25 mm (0.006 to 0.010 in.)
      Exhaust 0.25 to 0.35 mm (0.010 to 0.014 in.)
      Fig 4: Measuring Valve Clearance
      G04435588Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. REMOVE TIMING BELT 
    1. Remove the timing belt (see REMOVAL  ).
  15. REMOVE CAMSHAFT (for Bank 2) (See  REMOVAL   ) 
  16. REMOVE CAMSHAFT (for Bank 1) (See  REMOVAL   ) 
  17. ADJUST VALVE CLEARANCE 
    1. Using a powerful magnet, remove the valve lifter and adjusting shim.
      NOTE:
      • Since the shims might drop inside the cylinder head, the operation should be performed slowly.
      • Shims should be classified by the installation.
    2. Determine the replacement adjusting shim size according to these formulas and tables.
      1. Using a micrometer, measure the thickness of the removed shim.
        Fig 5: Measuring Thickness Of Removed Shim Using Micrometer
        G04435589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Calculate the thickness of a new shim so that the valve clearance is within the specified value.

        T = Thickness of removed shim

        A = Measured valve clearance

        N = Thickness of new shim

        Standard valve clearance 

        SHIM THICKNESS

        Valve Standard Thickness
        Intake N = T + (A - 0.20 mm (0.008 in.))
        Exhaust N = T + (A - 0.30 mm (0.012 in.))
    3. Select a new shim with a thickness as close as possible to the calculated value.

      HINT:

      Shims are available in 41 increments of 0.020 mm (0.0008 in.), from 2.00 mm (0.0787 in.) to 2.80 mm (0.1102).

    4. Place a new adjusting shim on the valve.
    5. Set the valve lifter in place.
    6. Recheck the valve clearance.
      Fig 6: Adjusting Shim Selection Table (Intake) (1 Of 2)
      G04435590Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 7: Adjusting Shim Selection Table (Intake) (2 Of 2)
      G04435591Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard intake valve clearance (Cold): 0.15 to 0.25 mm (0.006 to 0.010 in.) 

      EXAMPLE: 

      • A 2.300 mm (0.0906 in.) shim is installed, and the measured clearance is 0.440 mm (0.0173 in.). Replace the 2.300 mm (0.0906 in.) shim with a No. 54 shim. 

      New shim thickness 

      SHIM THICKNESS SPECIFICATIONS

      Shim No. Thickness Shim No. Thickness Shim No. Thickness
      00 2.000 mm (0.0787 in.) 28 2.280 mm (0.0898 in.) 56 2.560 mm (0.1008 in.)
      02 2.020 mm (0.0795 in.) 30 2.300 mm (0.0906 in.) 58 2.580 mm (0.1016 in.)
      04 2.040 mm (0.0803 in.) 32 2.320 mm (0.0913 in.) 60 2.600 mm (0.1024 in.)
      06 2.060 mm (0.0811 in.) 34 2.340 mm (0.0921 in.) 62 2.620 mm (0.1031 in.)
      08 2.080 mm (0.0819 in.) 36 2.360 mm (0.0929 in.) 64 2.640 mm (0.1039 in.)
      10 2.100 mm (0.0827 in.) 38 2.380 mm (0.0937 in.) 66 2.660 mm (0.1047 in.)
      12 2.120 mm (0.0835 in.) 40 2.400 mm (0.0945 in.) 68 2.680 mm (0.1055 in.)
      14 2.140 mm (0.0843 in.) 42 2.420 mm (0.0953 in.) 70 2.700 mm (0.1063 in.)
      16 2.160 mm (0.0850 in.) 44 2.440 mm (0.0961 in.) 72 2.720 mm (0.1071 in.)
      18 2.180 mm (0.0858 in.) 46 2.460 mm (0.0969 in.) 74 2.740 mm (0.1079 in.)
      20 2.200 mm (0.0866 in.) 48 2.480 mm (0.0976 in.) 76 2.760 mm (0.1087 in.)
      22 2.220 mm (0.0874 in.) 50 2.500 mm (0.0984 in.) 78 2.780 mm (0.1094 in.)
      24 2.240 mm (0.0882 in.) 52 2.520 mm (0.0992 in.) 80 2.800 mm (0.1102 in.)
      26 2.260 mm (0.0890 in.) 54 2.540 mm (0.1000) in. - -
      Fig 8: Adjusting Shim Selection Table (Exhaust) (1 Of 2)
      G04435592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 9: Adjusting Shim Selection Table (Exhaust) (2 Of 2)
      G04435593Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard exhaust valve clearance (Cold): 0.25 to 0.35 mm (0.010 to 0.014 in.) 

      EXAMPLE: 

      • A 2.300 mm (0.0906 in.) shim is installed, and the measured clearance is 0.440 mm (0.0173 in.). Replace the 2.300 mm (0.0906 in.) shim with a No. 44 shim. 

      New shim thickness 

      SHIM THICKNESS SPECIFICATIONS

      Shim No. Thickness Shim No. Thickness Shim No. Thickness
      00 2.000 mm (0.0787 in.) 28 2.280 mm (0.0898 in.) 56 2.560 mm (0.1008 in.)
      02 2.020 mm (0.0795 in.) 30 2.300 mm (0.0906 in.) 58 2.580 mm (0.1016 in.)
      04 2.040 mm (0.0803 in.) 32 2.320 mm (0.0913 in.) 60 2.600 mm (0.1024 in.)
      06 2.060 mm (0.0811 in.) 34 2.340 mm (0.0921 in.) 62 2.620 mm (0.1031 in.)
      08 2.080 mm (0.0819 in.) 36 2.360 mm (0.0929 in.) 64 2.640 mm (0.1039 in.)
      10 2.100 mm (0.0827 in.) 38 2.380 mm (0.0937 in.) 66 2.660 mm (0.1047 in.)
      12 2.120 mm (0.0835 in.) 40 2.400 mm (0.0945 in.) 68 2.680 mm (0.1055 in.)
      14 2.140 mm (0.0843 in.) 42 2.420 mm (0.0953 in.) 70 2.700 mm (0.1063 in.)
      16 2.160 mm (0.0850 in.) 44 2.440 mm (0.0961 in.) 72 2.720 mm (0.1071 in.)
      18 2.180 mm (0.0858 in.) 46 2.460 mm (0.0969 in.) 74 2.740 mm (0.1079 in.)
      20 2.200 mm (0.0866 in.) 48 2.480 mm (0.0976 in.) 76 2.760 mm (0.1087 in.)
      22 2.220 mm (0.0874 in.) 50 2.500 mm (0.0984 in.) 78 2.780 mm (0.1094 in.)
      24 2.240 mm (0.0882 in.) 52 2.520 mm (0.0992 in.) 80 2.800 mm (0.1102 in.)
      26 2.260 mm (0.0890 in.) 54 2.540 mm (0.1000) in. -
  18. INSTALL CAMSHAFT (for Bank 1) (See  INSTALLATION   ) 
  19. INSTALL CAMSHAFT (for Bank 2) (See  INSTALLATION   ) 
  20. INSTALL TIMING BELT 
    1. Install the timing belt (see INSTALLATION  ).
  21. RECHECK VALVE CLEARANCE 
    1. Check the valve clearance (see step 13 in ADJUSTMENT  ).
  22. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY LH (See  INSTALLATION   ) 
  23. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY RH (See  INSTALLATION   ) 
  24. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH (See  INSTALLATION   ) 
  25. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH (See  INSTALLATION   ) 
  26. INSTALL IGNITION COIL ASSEMBLY (See  INSTALLATION  ) 
  27. INSTALL OIL COOLER PIPE (See  INSTALLATION   ) 
  28. INSTALL DRIVE BELT (See  INSTALLATION   ) 
  29. INSTALL AIR CLEANER HOSE ASSEMBLY (See  INSTALLATION  ) 
  30. INSTALL V-BANK COVER (See  INSTALLATION  ) 
  31. ADD ENGINE COOLANT (See  REPLACEMENT  ) 
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