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Disassembly and Assembly: Assembly

WARNING: This page is about a different car, the 2012 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Do not reuse O-rings.
Fig 1: Identifying Timing Chain And Related Components
G08215253Courtesy of NISSAN NORTH AMERICA, INC.
NOTE:
  • The above figure shows the relationship between the matching mark on each timing chain and that on the corresponding sprocket, with the components installed.
  • Parts with an identification mark (R or L) should be installed on the corresponding bank according to the mark.
    • Camshaft sprocket (INT), camshaft sprocket (EXH)
    • Tension guide
    • Slack guide
  • To install timing chain and related parts, start with those on bank 2. The procedure for installing parts on bank 1 is omitted because it is the same as that for installation on bank 2.
  • There is no matching mark in the oil pump related parts.
  1. Check that crankshaft key (1) and dowel pin (A) of each camshaft are located as shown in the figure.

    Camshaft dowel pin: At cylinder head upper face side in each bank 

    Crankshaft key: Straight up 

    Fig 2: Identifying Crankshaft Key And Dowel Pin Positions
    G05980115Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Though camshaft does not stop at the position as shown in the figure, for the placement of cam nose, it is generally accepted camshaft is placed for the same direction of the figure.
  2. Install camshaft sprockets (INT and EXH).
    • Install onto correct side by checking with identification mark (A) on surface.
      Fig 3: Identifying Camshaft Sprockets Identification Mark
      G05980116Courtesy of NISSAN NORTH AMERICA, INC.

    Exhaust side:

    • Secure the hexagonal portion of camshaft (EXH) using a wrench to tighten mounting bolt. Refer to "EXPLODED VIEW ".

    Intake side:

    • Secure the hexagonal portion (located in between journal No. 1 and journal No. 2) of drive shaft (A) using a wrench (B) to tighten mounting bolt. Refer to "EXPLODED VIEW ".
      Fig 4: Loosening Drive Shaft Mounting Bolt Using Wrench
      G08215250Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: The figure shows an example of bank 2.
  3. Install timing chains as per the following:
    1. Install crankshaft sprockets for both banks.
      • Install each crankshaft sprocket so that its flange side (the larger diameter side without teeth) (A) faces in the direction shown in the figure.
        Fig 5: Identifying Crankshaft Sprocket And Flange Sides
        G08215257Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: The same parts are used but facing directions are different.
    2. Install timing chains.

      Bank 2 (F):

      • Install timing chain so that the matching mark (outer groove) (B) on camshaft sprocket is aligned with the copper link (A) on timing chain, while the matching mark (punched) (C) on crankshaft sprocket is aligned with the yellow link (D) one on timing chain, as shown in the figure.

      Bank 1 (G):

      • Install timing chain so that the matching mark (outer groove) (B) on camshaft sprocket is aligned with the copper link (A) on timing chain, while the matching mark (notched) (E) on crankshaft sprocket is aligned with the yellow link (D) one on timing chain, as shown in the figure.
        Fig 6: Identifying Timing Chain Matching Mark (Bank 1 And 2)
        G05980119Courtesy of NISSAN NORTH AMERICA, INC.
  4. Install slack guides and tension guides onto correct side by checking with identification mark (A) on surface.
    Fig 7: Identifying Slack Guides And Tension Guides Identification Marks
    G08215259Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Never overtighten slack guide mounting bolt (2). It is normal for a gap (A) to exist under the bolt seats when mounting bolt are tightened to the specification.
    Fig 8: Identifying Identification Marks On Slack And Tension Guide (Bank 1 And 2)
    G08215260Courtesy of NISSAN NORTH AMERICA, INC.
  5. Install timing chain tensioner as per the following:
    1. Fix the plunger at the most compressed position using a stopper pin (A).
      • Remove any dirt and foreign materials completely from the back and the mounting surfaces of timing chain tensioner.
    2. Pull out stopper pin after installing, and then release plunger.
      Fig 9: Fixing Stopper Pin Using Plunger
      G05980110Courtesy of NISSAN NORTH AMERICA, INC.
  6. Check again that the matching marks on sprockets and timing chain have not slipped out of alignment.
  7. Install oil pump drive chain as per the following:
    1. Install oil pump drive chain tensioner.
      • Fix the tensioner at the most compressed position using a stopper pin. and then install it.
    2. Install the oil pump sprocket (crankshaft side), oil pump sprocket (oil pump side) and oil pump drive chain at the same time.
      • Install each oil pump sprocket so that its flange side (the larger diameter side without teeth) (A) faces in the direction shown in the figure.
        Fig 10: Identifying Oil Pump, Sprocket (Crankshaft And Oil Pump Side) And Crankshaft
        G08215262Courtesy of NISSAN NORTH AMERICA, INC.
      NOTE: There is no matching mark in the oil pump related parts.
    3. Hold the two flat parts of oil pump shaft, and then tighten the oil pump sprocket (oil pump side) nut.
      Fig 11: Loosening Oil Pump Sprocket (Oil Pump Side) Nut
      G08215247Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Secure the oil pump shaft with the two flat parts.
    4. Securely pull out the stopper pin (A) after installing the oil pump drive chain.
      • Check that the tension is applied to the oil pump drive chain (1) after installing.
        Fig 12: Removing/Installing Oil Pump Drive Chain Using Tool
        G05980107Courtesy of NISSAN NORTH AMERICA, INC.
  8. Install front oil seal on front cover. Refer to. "FRONT OIL SEAL: REMOVAL AND INSTALLATION ".
  9. Install timing chain tensioner cover (2) to front cover (1).
    Fig 13: Identifying Liquid Gasket Applying Areas On Front Cover
    G08215265Courtesy of NISSAN NORTH AMERICA, INC.
    • Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to front cover as shown in the figure.

    Use Genuine RTV Silicone Sealant or an equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

  10. Install oil filter (for valve timing control solenoid valve) (1) in the direction shown in the figure, if removed.
    • Check that the oil filter does not protrude from the upper surface of front cover (2) after installation.
      Fig 14: Identifying Front Cover Oil Filter
      G04924656Courtesy of NISSAN NORTH AMERICA, INC.
  11. Install front cover as per the following:
    1. Install new O-ring (1), (2) onto cylinder heads and cylinder block.
      CAUTION: Do not reuse O-rings.
      Fig 15: Identifying Cylinder Heads And Cylinder Block "O" Ring
      G05980106Courtesy of NISSAN NORTH AMERICA, INC.
    2. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to front cover as shown in the figure.

      Use Genuine RTV Silicone Sealant or equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

      Fig 16: Identifying Liquid Gasket Bead Applying Sections Of Front Cover
      G08215268Courtesy of NISSAN NORTH AMERICA, INC.
    3. Check again that the matching marks on timing chain and that on each sprocket are aligned. Then, install front cover.
      CAUTION: Be careful not to damage front oil seal by interference with front end of crankshaft.
    4. Tighten mounting bolts in numerical order as shown in the figure.
      Fig 17: Identifying Timing Chain Bolts Tightening Sequence
      G05980105Courtesy of NISSAN NORTH AMERICA, INC.
      • There are three types of mounting bolts.
        1. 20 mm (0.79 in) 
        2. 45 mm (1.77 in) 
        3. 80 mm (3.15 in) 
          Fig 18: Identifying Types Of Mounting Bolts
          G05980131Courtesy of NISSAN NORTH AMERICA, INC.
    5. After all mounting bolts are tightened, retighten them in numerical order as shown in the figure.
    CAUTION: Be sure to wipe out any excessive liquid gasket leaking onto surface mating with oil pan.
  12. Install valve timing control cover as per the following:
    1. Install new O-rings (1) on front cover.
      CAUTION: Do not reuse O-rings.
      Fig 19: Identifying Front Cover "O" Rings
      G05980104Courtesy of NISSAN NORTH AMERICA, INC.
    2. Install new seal rings (1) in shaft grooves.
      CAUTION: When replacing seal ring, replace all rings with new ones.
      Fig 20: Identifying Shaft Grooves Seal Rings
      G05980133Courtesy of NISSAN NORTH AMERICA, INC.
    3. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to valve timing control covers as shown in the figure.
      Fig 21: Identifying Liquid Gasket Continuous Bead Applying Areas Of Valve Timing Control Covers (Bank 1 And 2)
      G08215273Courtesy of NISSAN NORTH AMERICA, INC.

      Use Genuine RTV Silicone Sealant or equivalent. Refer to  "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".

    4. Being careful not to move seal ring from the installation groove, align dowel pins on front cover with dowel pin holes (C) to install valve timing control covers.
      Fig 22: Identifying Front Cover Dowel Pins Bolts Tightening Sequence (Bank 1 And 2)
      G08215242Courtesy of NISSAN NORTH AMERICA, INC.
    5. Tighten mounting bolts in numerical order as shown in the figure.
  13. Install camshaft position sensor and valve timing control solenoid valve (RH and LH) to valve timing control cover, if removed.
    • Be sure to tighten mounting bolts with flanges completely seated.
  14. Install oil pan (lower) and oil strainer. Refer to "EXPLODED VIEW ".
  15. Install oil pan (upper). Refer to "EXPLODED VIEW ".
  16. Install water pump pulley. Refer to "EXPLODED VIEW ".
  17. Install crankshaft pulley.
    1. Install crankshaft pulley, taking care not to damage front oil seal.
    2. Apply engine oil onto threaded parts of crankshaft pulley bolt and seating area.
      • Lightly tapping its center with plastic hammer, insert crankshaft pulley.
      CAUTION: Never tap crankshaft pulley on the side surface where belt is installed (outer circumference).
    3. Tighten crankshaft pulley bolt.

      Torque: 157 N.m (16 kg-m, 116 ft-lb) 

    4. Put a paint mark (A) on crankshaft pulley (1) aligning with angle mark (B) on crankshaft pulley bolt.
    5. Tighten crankshaft pulley bolt (clockwise).

      Angle tightening: 90 degrees (c) 

      Fig 23: Rotating Crankshaft Clockwise
      G05980136Courtesy of NISSAN NORTH AMERICA, INC.
      • Check the tightening angle by referencing to the notches. The angle between two notches is 90 degrees.
  18. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns smoothly.
  19. Install in the reverse order of removal.
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