Nissan Quest 2001-02 and 2004-06

Cylinder Head

Print

Removal & Installation



3.3L Engines

The factory specifies that the cylinder head bolts ARE NOT to be reused. Obtain the proper replacement parts before beginning this procedure. Check carefully that all bolts are removed before attempting to remove a cylinder head. A tab, part of the head, contains 1 lightly tightened head bolt that is external to the valve cover. Do not overlook this "hidden" bolt or the head will be damaged.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Drain the coolant.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Air intake tube
     
    Timing belt
     
    Upper intake manifold (plenum)
     
    Fuel feed and return hoses from the fuel rail
     
    Fuel injector-s electrical connections
     
    Fuel rail and injectors as an assembly
     
    Intake manifold (lower)
     
    Camshaft sprockets
     
    Rear timing belt cover
     
    Distributor
     
    Harness clamp from the right hand rocker cover
     
    Exhaust tube from the left hand manifold
     
    Left hand exhaust manifold from the right hand exhaust manifold
     
    Left hand manifold-to-bracket bolt
     
    A/C compressor, alternator and their brackets
     
    Rocker covers
     
    Cylinder head bolts in the sequence illustrated using several passes
     
    Cylinder head with the exhaust manifold and gasket. Discard the gasket.
     
    Exhaust manifold from the head
     

  8.  


    Click image to see an enlarged view

    Fig. Remove the cylinder head bolts in the sequence shown-3.3L engines



    Click image to see an enlarged view

    Fig. Hold the camshaft sprocket while removing the sprocket retaining bolt-3.3L engines


To install:

  1. Clean all parts well.
  2.  
  3. Inspect the cylinder head for damage, cracks and leakage of water and oil. If necessary, replace the head. Check the head gasket surface for burrs and nicks. If the head is cracked, it must be replaced.
  4.  
  5. Install the exhaust manifold on the cylinder head.
  6.  
  7. Position a new head gasket and the cylinder head on the block. Examine the head bolt washers. Note that the washers have a chamfer or bevel on one side. The beveled side should face "up" when installed. Examine the new replacement head bolts. There are different lengths. The head bolts in positions 4, 7, 9 and 12 are 5.00 inches (127mm) long and the rest are 4.17 inches (106mm) long. Be sure the new cylinder head bolts are installed in the correct positions.
  8.  
  9. Tighten the new head bolts in the following sequence:
    1. First pass: cylinder head bolts to 22 ft. lbs. (29 Nm).
    2.  
    3. Second pass: cylinder head bolts to 43 ft. lbs. (59 Nm).
    4.  
    5. Third pass: Loosen all of the cylinder head bolts completely.
    6.  
    7. Fourth pass: cylinder head bolts to 7 ft. lbs. (10 Nm).
    8.  
    9. Fifth pass: intake manifold bolts and nuts to 2.9 ft. lbs. (4 Nm).
    10.  
    11. Sixth pass: intake manifold bolts and nuts to 13 ft. lbs. (18 Nm).
    12.  
    13. Seventh pass: intake manifold bolts and nuts to 12-14 ft. lbs. (16-20 Nm).
    14.  
    15. Eight pass: Loosen all of the intake manifold bolts and nuts completely.
    16.  
    17. Ninth pass: cylinder head bolts to 22 ft. lbs. (29 Nm).
    18.  
    19. Tenth pass: cylinder head bolts to 40-47 ft. lbs. (54-64 Nm).
    20.  
    21. Eleventh pass: cylinder head sub-bolts to 6.7-8.7 ft. lbs. (9-12 Nm).
    22.  
    23. Twelfth pass: intake manifold bolts and nuts to 2.9 ft. lbs. (4 Nm).
    24.  
    25. Thirteenth pass: intake manifold bolts and nuts to 6.5 ft. lbs. (9 Nm).
    26.  
    27. Fourteenth pass: intake manifold bolts and nuts to 6-7 ft. lbs. (8-10 Nm).
    28.  
    29. Rocker covers
    30.  
    31. A/C compressor, alternator brackets
    32.  
    33. A/C compressor and alternator
    34.  
    35. Left hand manifold-to-bracket bolt
    36.  
    37. Left hand exhaust manifold to the right hand exhaust manifold
    38.  
    39. Exhaust tube to the left hand manifold
    40.  
    41. Harness clamp to the right hand rocker cover
    42.  
    43. Distributor
    44.  
    45. Rear timing belt cover
    46.  
    47. Camshaft sprockets
    48.  
    49. Intake manifold (lower)
    50.  
    51. Fuel rail and injectors as an assembly
    52.  
    53. Fuel injector-s electrical connections
    54.  
    55. Fuel feed and return hoses to the fuel rail
    56.  
    57. Upper intake manifold (plenum)
    58.  
    59. Timing belt
    60.  
    61. Air intake tube
    62.  
    63. Negative battery cable
    64.  

  10.  
  11. Fill the cooling system. An oil and filter change is recommended.
  12.  
  13. Start the vehicle and check for leaks. Check the ignition timing and adjust as required.
  14.  


    Click image to see an enlarged view

    Fig. Tighten the cylinder head bolts in sequence as shown-3.3L engines


The factory specifies that the cylinder head bolts ARE NOT to be reused. Obtain the proper replacement parts before beginning this procedure. Check carefully that all bolts are removed before attempting to remove a cylinder head. A tab, part of the head, contains 1 lightly tightened head bolt that is external to the valve cover. Do not overlook this "hidden" bolt or the head will be damaged.

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Properly relieve the fuel system pressure.
  4.  
  5. Drain the coolant.
  6.  
  7. Remove or disconnect the following:

    Negative battery cable
     
    Air intake tube
     
    Timing belt
     
    Upper intake manifold (plenum)
     
    Fuel feed and return hoses from the fuel rail
     
    Fuel injector-s electrical connections
     
    Fuel rail and injectors as an assembly
     
    Intake manifold (lower)
     
    Camshaft sprockets
     
    Rear timing belt cover
     
    Distributor
     
    Harness clamp from the right hand valve cover
     
    Exhaust tube from the left hand manifold
     
    Left hand exhaust manifold from the right hand exhaust manifold
     
    Left hand manifold-to-bracket bolt
     
    A/C compressor, alternator and their brackets
     
    Valve covers
     
    Cylinder head bolts in the sequence illustrated using several passes
     
    Cylinder head with the exhaust manifold and gasket. Discard the gasket.
     
    Exhaust manifold from the head

    Click image to see an enlarged view

    Fig. Remove the cylinder head bolts in the sequence shown-3.3L engines



    Click image to see an enlarged view

    Fig. Hold the camshaft sprocket while removing the sprocket retaining bolt-3.3L engines

     

  8.  

To install:

  1. Clean all parts well.
  2.  
  3. Inspect the cylinder head for damage, cracks and leakage of water and oil. If necessary, replace the head. Check the head gasket surface for burrs and nicks. If the head is cracked, it must be replaced.
  4.  
  5. Install the exhaust manifold on the cylinder head.

    Click image to see an enlarged view

    Fig. Tighten the cylinder head bolts in sequence as shown-3.3L engines

  6.  
  7. Position a new head gasket and the cylinder head on the block. Examine the head bolt washers. Note that the washers have a chamfer or bevel on one side. The beveled side should face "up" when installed. Examine the new replacement head bolts. There are different lengths. The head bolts in positions 4, 7, 9 and 12 are 5.00 inches (127mm) long and the rest are 4.17 inches (106mm) long. Be sure the new cylinder head bolts are installed in the correct positions.
  8.  
  9. Tighten the new head bolts in the following sequence:
    1. First pass: cylinder head bolts to 22 ft. lbs. (29 Nm).
    2.  
    3. Second pass: cylinder head bolts to 43 ft. lbs. (59 Nm).
    4.  
    5. Third pass: Loosen all of the cylinder head bolts completely.
    6.  
    7. Fourth pass: cylinder head bolts to 7 ft. lbs. (10 Nm).
    8.  
    9. Fifth pass: intake manifold bolts and nuts to 2.9 ft. lbs. (4 Nm).
    10.  
    11. Sixth pass: intake manifold bolts and nuts to 13 ft. lbs. (18 Nm).
    12.  
    13. Seventh pass: intake manifold bolts and nuts to 12-14 ft. lbs. (16-20 Nm).
    14.  
    15. Eight pass: Loosen all of the intake manifold bolts and nuts completely.
    16.  
    17. Ninth pass: cylinder head bolts to 22 ft. lbs. (29 Nm).
    18.  
    19. Tenth pass: cylinder head bolts to 40-47 ft. lbs. (54-64 Nm).
    20.  
    21. Eleventh pass: cylinder head sub-bolts to 6.7-8.7 ft. lbs. (9-12 Nm).
    22.  
    23. Twelfth pass: intake manifold bolts and nuts to 2.9 ft. lbs. (4 Nm).
    24.  
    25. Thirteenth pass: intake manifold bolts and nuts to 6.5 ft. lbs. (9 Nm).
    26.  
    27. Fourteenth pass: intake manifold bolts and nuts to 6-7 ft. lbs. (8-10 Nm).

      Valve covers
       
      A/C compressor, alternator brackets
       
      A/C compressor and alternator
       
      Left hand manifold-to-bracket bolt
       
      Left hand exhaust manifold to the right hand exhaust manifold
       
      Exhaust tube to the left hand manifold
       
      Harness clamp to the right hand valve cover
       
      Distributor
       
      Rear timing belt cover
       
      Camshaft sprockets
       
      Intake manifold (lower)
       
      Fuel rail and injectors as an assembly
       
      Fuel injector-s electrical connections
       
      Fuel feed and return hoses to the fuel rail
       
      Upper intake manifold (plenum)
       
      Timing belt
       
      Air intake tube
       
      Negative battery cable
       

    28.  

  10.  
  11. Fill the cooling system. An oil and filter change is recommended.
  12.  
  13. Start the vehicle and check for leaks. Check the ignition timing and adjust as required.
  14.  

3.5L Engine


Before servicing the vehicle, refer to the Precautions section.
 
Before servicing the vehicle, refer to the Precautions section.
 
Disconnect the negative battery cable.
 
Remove the fuel tube and fuel injector assembly.
 
Remove the intake manifold.
 
Remove the exhaust manifold.
 
Remove the water inlet and thermostat assembly.
 
remove the water outlet and water piping.
 
Remove the camshaft.
 
Remove the cylinder head bolts in reverse of the tightening sequence.
 
Inspect the bolts. Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace them with new one. If reduction of outer diameter appears in a position other than d2, use it as d2 point.
 


Click image to see an enlarged view

Fig. Cylinder head bolt torque sequence-3.5L engine-right side



Click image to see an enlarged view

Fig. Cylinder head bolt torque sequence-3.5L engine-left side



Click image to see an enlarged view

Fig. Cylinder head bolt measurement-3.5L engine


To install:

  1. Install cylinder head gasket.
  2.  
  3. Turn the crankshaft until No. 1 piston is set at TDC on the compression stroke. The crankshaft key should line up with the right bank cylinder center line as shown.
  4.  
  5. Install cylinder head. Tighten the head bolts in the order shown in illustration.
    1. Step 1: Tighten all bolts to 72 ft. lbs. (98 Nm).
    2.  
    3. Step 2: Completely loosen to 0 in the reverse order.
    4.  
    5. Step 3: Tighten all bolts to 26-32 ft. lbs. (34.3-44.1 Nm).
    6.  
    7. Step 4: Turn all bolts 90 degrees clockwise.
    8.  
    9. Step 5: Turn all bolts an additional 90 degrees clockwise.
    10.  

  6.  
  7. After installing cylinder head, measure distance between front end faces of cylinder block and cylinder head (left and right banks). If measurement is outside the specified range, reinstall cylinder head.
  8.  
  9. The remainder of installation is the reverse of removal.
  10.  

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Before servicing the vehicle, refer to the precautions section.
  4.  
  5. Disconnect the negative battery cable.
  6.  
  7. Remove the fuel tube and fuel injector assembly.
  8.  
  9. Remove the intake manifold.
  10.  
  11. Remove the exhaust manifold.
  12.  
  13. Remove the water inlet and thermostat assembly.
  14.  
  15. remove the water outlet and water piping.
  16.  
  17. Remove the camshaft.
  18.  
  19. Remove the cylinder head bolts in reverse of the tightening sequence.
  20.  
  21. Inspect the bolts. Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace them with new one. If reduction of outer diameter appears in a position other than d2, use it as d2 point.

    Click image to see an enlarged view

    Fig. Cylinder head bolt torque sequence-3.5L engine-right side



    Click image to see an enlarged view

    Fig. Cylinder head bolt torque sequence-3.5L engine-left side



    Click image to see an enlarged view

    Fig. Cylinder head bolt measurement-3.5L engine

  22.  

To install:

  1. Install cylinder head gasket.
  2.  
  3. Turn the crankshaft until No. 1 piston is set at TDC on the compression stroke. The crankshaft key should line up with the right bank cylinder center line as shown.
  4.  
  5. Install cylinder head. Tighten the head bolts in the order shown in illustration.
    1. Step 1: Tighten all bolts to 72 ft. lbs. (98 Nm).
    2.  
    3. Step 2: Completely loosen to 0 in the reverse order.
    4.  
    5. Step 3: Tighten all bolts to 26-32 ft. lbs. (34.3-44.1 Nm).
    6.  
    7. Step 4: Turn all bolts 90 degrees clockwise.
    8.  
    9. Step 5: Turn all bolts an additional 90 degrees clockwise.
    10.  

  6.  
  7. After installing cylinder head, measure distance between front end faces of cylinder block and cylinder head (left and right banks). If measurement is outside the specified range, reinstall cylinder head.
  8.  
  9. The remainder of installation is the reverse of removal.
  10.  

 
label.common.footer.alt.autozoneLogo