TIMING CHAIN REMOVAL

PROCEDURE


  1. REMOVE TIMING CHAIN OR BELT COVER SUB-ASSEMBLY

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  2. MAKE PAINT MARKS

    Tech Tips

    If the alignment marks are difficult to identify during the work, mark the alignment marks with paint at the positions shown in the illustration, for easier recognition.

    A004J7BE03
    Text in Illustration
    *a Triangular Mark *b Engraved Line
    *c Oval Mark *d Crankshaft Timing Gear key

  3. REMOVE CHAIN SUB-ASSEMBLY (for Bank 1)

    CAUTION:

    Do not remove the chain sub-assembly from bank 2 at the same time as the chain sub-assembly is being removed from bank 1. Otherwise, the camshaft on bank 2 may turn suddenly, which is dangerous.


    1. A004HP7

      Temporarily install the crankshaft pulley spacer and crankshaft pulley.

    2. A004HR7E03
      Text in Illustration
      *a Alignment Mark
      *b Crankshaft Pulley Pin Hole
      *c Crankshaft Timing Gear key

      Using SST, turn the crankshaft pulley clockwise until the alignment marks on the camshaft timing intake gear assembly RH and the camshaft timing exhaust gear assembly RH, and the crankshaft pulley pin hole are aligned at the positions shown in the illustration.

      SST
      09960-10010   ( 09962-01000, 09963-01000 )

      Tech Tips

      At this time, the alignment mark on the crankshaft timing gear or sprocket and the crankshaft timing gear key are at the positions shown in the illustration.

    3. Remove the crankshaft pulley and crankshaft pulley spacer.

    4. A004JUC

      Push down the chain tensioner slipper and insert a 2.5 mm (0.098 in.) hexagonal wrench through the stopper plate into the No. 1 chain tensioner assembly.

    5. A004HNR

      Remove the 2 bolts and No. 1 chain tensioner assembly.

    6. Remove the chain tensioner slipper.

    7. A004JE1

      Using a 5 mm hexagonal wrench, remove the bolt and No. 1 chain vibration damper.

    8. Remove the chain sub-assembly.

      Note


      • With the chain sub-assembly removed, the valve heads may contact each other if the camshafts are turned, causing the valve stems to bend.

      • To avoid this, do not turn the intake camshaft RH and the exhaust camshaft RH more than the zero-lift range (the range where camshafts can be turned lightly by hand).

      Tech Tips

      Arrange the removed parts in the correct order.

  4. REMOVE CHAIN SUB-ASSEMBLY (for Bank 2)


    1. Temporarily install the crankshaft pulley spacer and crankshaft pulley.

    2. Using SST, turn the crankshaft pulley clockwise until the alignment marks on the camshaft timing intake gear assembly LH and the camshaft timing exhaust gear assembly LH, and the crankshaft pulley pin hole are aligned at the positions shown in the illustration.

      SST
      09960-10010   ( 09962-01000, 09963-01000 )
      A004H5TE03
      Text in Illustration
      *a Alignment Mark *b Crankshaft Pulley Pin Hole
      *c Crankshaft Timing Gear key *d Cylinder Block Guide Pin

      Tech Tips

      At this time, the crankshaft timing gear key is at the position shown in the illustration.

    3. Remove the crankshaft pulley and crankshaft pulley spacer.

    4. A004JX9

      Push the chain tensioner slipper and retain the plunger by inserting an approximately 1 mm (0.039 in.) wire through the stopper plate into the No. 2 chain tensioner assembly.

    5. A004H2S

      Remove the 2 bolts and No. 2 chain tensioner assembly.

    6. Remove the chain tensioner slipper.

    7. A004INR

      Remove the O-ring from the cylinder block (bank 2).

    8. A004KBU

      Using a 5 mm socket hexagon wrench, remove the bolt and No. 1 chain vibration damper.

    9. A004JW4E01

      While releasing the tension of chain sub-assembly using SST, remove the chain sub-assembly.

      SST
      09960-10010   ( 09962-01000, 09963-00700 )

      CAUTION:

      Make sure to use SST. Never carry out the work using only your hands.

      Note


      • With the chain sub-assembly removed, the valve heads may contact each other if the camshafts are turned, causing the valve stems to bend. To avoid this, do not turn the exhaust camshaft LH more than the zero-lift range (the range where the camshaft can be turned lightly by hand).

      • At this time, the No. 1 and No. 4 pistons are located near TDC. If the intake camshaft is turned, the valves may come into contact with the piston, causing the valve stems to bend. To avoid this, do not turn the intake camshaft LH.

      Tech Tips

      Arrange the removed parts in the correct order.

  5. INSPECT CHAIN SUB-ASSEMBLY

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