VALVE CLEARANCE ADJUSTMENT


  1. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

    Click here

  2. SET NO. 1 CYLINDER TO TDC/COMPRESSION


    1. A01EXK6E03
      Text in Illustration
      *a Timing Mark
      *b Front Mark
      *c Groove
      *d Paint Mark

      Turn the crankshaft pulley until its groove and the timing mark "0" of the timing chain cover sub-assembly are aligned.

    2. Check that each timing mark of the camshaft timing gear assembly and camshaft timing sprocket is aligned with each front mark located on the No. 1 and No. 2 bearing caps as shown in the illustration.

      If not, turn the crankshaft by 1 revolution (360°) to align the timing marks as above.

    3. Place paint marks on the chain sub-assembly in alignment with the timing marks on the camshaft timing gear assembly and camshaft timing sprocket.

  3. CHECK VALVE CLEARANCE


    1. A01EWFGE05
      Text in Illustration
      *a No. 1 Cylinder TDC/Compression
      *b Intake Side
      *c Exhaust Side

      Check only the valves indicated.


      1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.

        Standard Valve Clearance (Cold)
        Item Specified Condition
        Intake 0.19 to 0.29 mm (0.00748 to 0.0114 in.)
        Exhaust 0.38 to 0.48 mm (0.0150 to 0.0189 in.)

      2. Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve lifters.

    2. Turn the crankshaft 1 revolution (360°) and set the No. 4 cylinder to TDC/compression.

    3. A01EY57E07
      Text in Illustration
      *a No. 4 Cylinder TDC/Compression
      *b Intake Side
      *c Exhaust Side

      Check only the valves indicated.


      1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.

        Standard Valve Clearance (Cold)
        Item Specified Condition
        Intake 0.19 to 0.29 mm (0.00748 to 0.0114 in.)
        Exhaust 0.38 to 0.48 mm (0.0150 to 0.0189 in.)

      2. Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve lifters.

  4. ADJUST VALVE CLEARANCE


    1. Remove the camshaft Click here.

    2. Remove the valve lifters.

      Tech Tips

      Arrange the valve lifters in the same order as removed.

    3. A01EVM8E01

      Using a micrometer, measure the thickness of the removed valve lifters.

    4. Calculate the thickness of a new lifter so that the valve clearance comes within the specified range.

      New Lifter Thickness
      Item Specification
      Intake A = B + (C - 0.24 mm (0.00945 in.))
      Exhaust A = B + (C - 0.43 mm (0.0169 in.))
      A New lifter thickness
      B Used lifter thickness
      C Measured valve clearance

      CALCULATION EXAMPLE (Intake):


      1. Measured intake valve clearance = 0.40 mm (0.0157 in.)

        (Measured - Specification = Excess clearance)


        1. 0.40 mm (0.0157 in.) - 0.24 mm (0.00945 in.) = 0.16 mm (0.00630 in.)

      2. Measured used lifter thickness = 5.250 mm (0.207 in.)

      3. New lifter thickness = 5.410 mm (0.2130 in.)

        (Excess clearance + Used lifter thickness = Ideal new lifter)


        1. 0.16 mm (0.00630 in.) + 5.250 mm (0.207 in.) = 5.410 mm (0.2130 in.)

      4. Closest new lifter = 5.420 mm (0.2134 in.)


        • Select No. 42 lifter

    5. A01ETL3E01

      Select a new lifter with a thickness as close as possible to the calculated values.

      Tech Tips


      • Lifters are available in 35 sizes in increments of 0.020 mm (0.000787 in.), from 5.060 to 5.740 mm (0.1992 to 0.2260 in.).

      • The identification number inside the valve lifters shows the value to 2 decimal places. (The illustration shows 5.420 mm (0.2134 in.))

    6. Valve lifter selection chart (intake).

      A01EYFWE02
      New Lifter Thickness
      Lifter No. Thickness mm (in.) Lifter No. Thickness mm (in.) Lifter No. Thickness mm (in.)
      06 5.060 (0.1992) 30 5.300 (0.2087) 54 5.540 (0.2181)
      08 5.080 (0.2000) 32 5.320 (0.2094) 56 5.560 (0.2189)
      10 5.100 (0.2008) 34 5.340 (0.2102) 58 5.580 (0.2197)
      12 5.120 (0.2016) 36 5.360 (0.2110) 60 5.600 (0.2205)
      14 5.140 (0.2024) 38 5.380 (0.2118) 62 5.620 (0.2213)
      16 5.160 (0.2031) 40 5.400 (0.2126) 64 5.640 (0.2220)
      18 5.180 (0.2039) 42 5.420 (0.2134) 66 5.660 (0.2228)
      20 5.200 (0.2047) 44 5.440 (0.2142) 68 5.680 (0.2236)
      22 5.220 (0.2055) 46 5.460 (0.2150) 70 5.700 (0.2244)
      24 5.240 (0.2063) 48 5.480 (0.2157) 72 5.720 (0.2252)
      26 5.260 (0.2071) 50 5.500 (0.2165) 74 5.740 (0.2260)
      28 5.280 (0.2079) 52 5.520 (0.2173) - -
      Standard intake valve clearance (cold)
      0.19 to 0.29 mm (0.00748 to 0.0114 in.)

      EXAMPLE:

      A 5.250 mm (0.2067 in.) lifter is installed, and the measured clearance is 0.400 mm (0.0157 in.). Replace the 5.250 mm (0.2067 in.) lifter with a new No. 42 lifter.

    7. Valve lifter selection chart (exhaust).

      A01EYZPE01
      New Lifter Thickness
      Lifter No. Thickness mm (in.) Lifter No. Thickness mm (in.) Lifter No. Thickness mm (in.)
      06 5.060 (0.1992) 30 5.300 (0.2087) 54 5.540 (0.2181)
      08 5.080 (0.2000) 32 5.320 (0.2094) 56 5.560 (0.2189)
      10 5.100 (0.2008) 34 5.340 (0.2102) 58 5.580 (0.2197)
      12 5.120 (0.2016) 36 5.360 (0.2110) 60 5.600 (0.2205)
      14 5.140 (0.2024) 38 5.380 (0.2118) 62 5.620 (0.2213)
      16 5.160 (0.2031) 40 5.400 (0.2126) 64 5.640 (0.2220)
      18 5.180 (0.2039) 42 5.420 (0.2134) 66 5.660 (0.2228)
      20 5.200 (0.2047) 44 5.440 (0.2142) 68 5.680 (0.2236)
      22 5.220 (0.2055) 46 5.460 (0.2150) 70 5.700 (0.2244)
      24 5.240 (0.2063) 48 5.480 (0.2157) 72 5.720 (0.2252)
      26 5.260 (0.2071) 50 5.500 (0.2165) 74 5.740 (0.2260)
      28 5.280 (0.2079) 52 5.520 (0.2173) - -
      Standard exhaust valve clearance (cold)
      0.38 to 0.48 mm (0.0150 to 0.0189 in.)

      EXAMPLE:

      A 5.340 mm (0.2102 in.) lifter is installed, and the measured clearance is 0.510 mm (0.0201 in.). Replace the 5.340 mm (0.2102 in.) lifter with a new No. 42 lifter.

    8. Install the selected valve lifter.

    9. Install the camshaft Click here.

  5. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY

    Click here