РАСПРЕДВАЛ (для ряда 2) ПРОВЕРКА


  1. INSPECT CAMSHAFT


    1. A01DWVUE01

      Inspect the camshaft for runout.


      1. Place the camshaft on V-blocks.

      2. Using a dial indicator, measure the circle runout at the center journal.

        Maximum circle runout
        0.06 mm (0.0024 in.)

        If the circle runout is greater than the maximum, replace the camshaft.

    2. A01DVZCE01

      Inspect the cam lobes.


      1. Using a micrometer, measure the cam lobe height.

        Standard cam lobe height
        Camshaft Cam lobe height
        Intake 44.168 to 44.268 mm (1.7389 to 1.7428 in.)
        Exhaust 44.580 to 44.680 mm (1.7551 to 1.7591 in.)
        Minimum cam lobe height
        Camshaft Cam lobe height
        Intake 44.018 mm (1.7330 in.)
        Exhaust 44.430 mm (1.7492 in.)

        If the cam lobe height is less than the minimum, replace the camshaft.

    3. A01E2I2E02

      Inspect the camshaft journals.


      1. Using a micrometer, measure the journal diameter.

        Standard journal diameter
        Journal Diameter
        No. 1 journal 35.971 to 35.985 mm (1.4162 to 1.4167 in.)
        Other journal 22.959 to 22.975 mm (0.9039 to 0.9045 in.)

        If the journal diameter is not as specified, check the oil clearance.

  2. INSPECT CAMSHAFT TIMING GEAR


    1. Fix the intake camshaft with a vise.

      Note

      Be careful not to damage the camshaft.

    2. A01E0GLE01

      Align the knock pin hole in the camshaft timing gear assembly with the knock pin of the camshaft, and install the camshaft timing gear assembly with the bolt.

      Torque:
      100 N*m  { 1,020 kgf*cm, 74 ft.*lbf }

    3. Confirm the camshaft timing gear assembly is locked.

    4. A01DXDIE01

      Release the lock pin.


      1. Cover 4 oil paths of cam journal with vinyl tape as shown in the illustration.

        Tech Tips

        The 4 oil paths are provided in the groove of the camshaft. Plug two of the paths with rubber pieces.

      2. Break through the tapes of the advance side path and the retard side path on the opposite side of the groove.

      3. A01DWJNE01

        Put air pressure into 2 broken paths (the advance side path and the retard side path) with about 200 kPa (2.0 kgf/cm2, 28 psi).

        Note

        Cover the paths with cloth or equipment to avoid oil splashing.

      4. A01DZ0AE01

        Confirm if the camshaft timing gear assembly rotates in the timing advance direction when weakening the air pressure of the timing retard path.

        Tech Tips

        The lock pin is released, and camshaft timing gear, rotates in the advance direction.

      5. When the camshaft timing gear comes to the most advanced position, take out the air pressure of the timing retard side path, and then take out that of timing advance side path.

        Note

        Camshaft timing assembly gear occasionally shifts to the retard side abruptly, if the air compression of the advanced side path is released before retard side path. It often results the breakage of the lock pin.

    5. Check the smooth revolution.


      1. Except the position where the lock pin meets at the most retard angle, let the camshaft timing gear assembly turn back and forth and check the movable range and that there is no disturbance.

        Standard
        Movable range is about 31° and gear moves smoothly.

        Note

        Be sure to perform this check by hand, instead of air pressure.

    6. Check the lock in the most retarded position.


      1. Confirm that the camshaft timing gear assembly is locked at the most retarded position.

    7. A01E0JYE01

      Remove the set bolt and camshaft timing gear assembly.

      Note

      Be sure not to remove the other 3 bolts.