Removal And Installation: Camshafts: Installation

RH camshafts 

1. NOTE: The crankshaft must remain in the freewheeling position (crankshaft dowel pin at 9 o'clock) until after the camshafts are installed and the valve clearance is checked/adjusted. Do not turn the crankshaft until instructed to do so. Failure to follow this process will result in severe engine damage.

   Using the crankshaft bolt, rotate counterclockwise to the 9 o'clock position.

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2. Lubricate the camshafts with clean engine oil and position the camshafts onto the RH cylinder head in the neutral position as shown.

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3. NOTE: The camshaft seal gaps must be at the 12 o'clock position or damage to the engine may occur.

   Position the camshaft seals gaps at 12 o'clock.

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4. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.
   • Install the camshaft caps, oil tube and the bolts.

     Torque: Stage 1: Tighten bolts 1, 2, 4, 5, 6 and 7 to: 71 lb.in (8 Nm); Stage 2: Tighten bolts 1, 2, 4, 5, 6 and 7 an additional: 45 deg.; Stage 3: Tighten bolts 8, 9, 10 and 11 to: 71 lb.in (8 Nm); Stage 4: Tighten bolts 12, 13, 14 and 15 to: 71 lb.in (8 Nm); Stage 5: Tighten bolts 12, 13, 14 and 15 an additional: 45 deg.

   • The camshaft torque sequence (bolt 3) will be finished after the timing chain is installed.
   Fig 1: Camshaft Cap Bolts Tightening Sequence

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5. Loosen the camshaft cap bolts.

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6. Tighten the camshaft cap bolts.

   Torque: Stage 1: 71 lb.in (8 Nm); Stage 2: 60 deg.

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7. NOTE: If any components are installed new, the engine valve clearance must be checked/adjusted or engine damage may occur.
   NOTE: Use a camshaft sprocket bolt to turn the camshafts.

   Confirm that the valve tappet clearances are within specification. If valve tappet clearances are not within specification, the clearance must be adjusted by installing new valve tappet(s) of the correct size. Refer to: Valve Clearance Adjustment . Use the General Equipment: Feeler Gauge

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8. • Remove the bolts and the RH oil tube.
   • Loosen the 2 bolts.

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9. Rotate the RH camshafts to the TDC.

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10. NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC position.

    Install Special Service Tool: 303-1248 Camshaft holding tools.

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11. NOTE: The VCT oil control solenoids are removed for clarity.

    Install Special Service Tool: 303-1530 Tool, Chain Tensioner Hold Down.

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    LH camshafts 

12. NOTE: The crankshaft must remain in the freewheeling position (crankshaft dowel pin at 9 o'clock) until after the camshafts are installed and the valve clearance is checked/adjusted. Do not turn the crankshaft until instructed to do so. Failure to follow this process will result in severe engine damage.

    Using the crankshaft bolt, rotate counterclockwise to the 9 o'clock position.

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13. Lubricate the camshafts with clean engine oil and position the camshafts onto the LH cylinder head in the neutral position as shown.

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14. NOTE: The camshaft seal gaps must be at the 12 o'clock position or damage to the engine may occur.

    Position the camshaft seals gaps at 12 o'clock.

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15. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.
    • Install the camshaft caps, oil tube and the bolts.

      Torque: Stage 1: Tighten bolts 1, 2, 4, 5, 6 and 7 to: 71 lb.in (8 Nm); Stage 2: Tighten bolts 1, 2, 4, 5, 6 and 7 an additional: 45 deg.; Stage 3: Tighten bolts 8, 9, 10 and 11 to: 71 lb.in (8 Nm); Stage 4: Tighten bolts 12, 13, 14 and 15 to: 71 lb.in (8 Nm); Stage 5: Tighten bolts 12, 13, 14 and 15 an additional: 45 deg.

    • The camshaft torque sequence (bolt 3) will be finished after the timing chain is installed.

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16. Loosen the camshaft cap bolts.

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17. Tighten the camshaft cap bolts.

    Torque:Stage 1: 71 lb.in (8 Nm); Stage 2: 60 deg.

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18. NOTE: If any components are installed new, the engine valve clearance must be checked/adjusted or engine damage may occur.
    NOTE: Use a camshaft sprocket bolt to turn the camshafts.

    Confirm that the valve tappet clearances are within specification. If valve tappet clearances are not within specification, the clearance must be adjusted by installing new valve tappet(s) of the correct size. Refer to: Valve Clearance Adjustment . Use the General Equipment: Feeler Gauge

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19. • Remove bolts and the LH oil tube.
    • Loosen the 2 bolts.

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20. Rotate the LH camshafts to the TDC.

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21. NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC position.

    Install Special Service Tool: 303-1248 Camshaft holding tools.

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22. NOTE: The VCT oil control solenoids are removed for clarity.

    Install Special Service Tool: 303-1530 Tool, Chain Tensioner Hold Down.

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    All camshafts 

23. Using the crankshaft bolt, rotate the crankshaft clockwise 60 degrees to the TDC position (crankshaft dowel pin at 11 o'clock).

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24. Install the LH or RH VCT unit. Refer to: Variable Camshaft Timing (VCT) Unit .
25. Road test the vehicle.