FixVault
Home › Infiniti › 2012 › FX35 AWD › Repair and Diagnosis › External Pages › Different car › Section 145 (Engine Mechanical) › Unit Disassembly And Assembly › Timing Chain › Disassembly and Assembly › Assembly

Disassembly and Assembly: Assembly

WARNING: This page is about a different car, the 2011 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Timing Chain Assembly
G07226097Courtesy of NISSAN MOTOR CO., U.S.A.
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 illustration.

    Camshaft dowel pin 

    : At cylinder head upper face side in each bank 

    Crankshaft key 

    : Straight up 

    Fig 2: Checking Crankshaft Key And Dowel Pin Of Camshaft
    G07226098Courtesy of NISSAN MOTOR CO., U.S.A.
    NOTE: Though camshaft does not stop at the position as shown in the illustration, 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 Identification Mark On Camshaft Sprockets (INT And EXH)
      G07226099Courtesy of NISSAN MOTOR CO., U.S.A.

    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 ".
    NOTE: The figure shows an example of bank 2.
    Fig 4: Securing Hexagonal Portion (Located In Between Journal No. 1 And Journal No. 2) Of Drive Shaft Using Wrench To Loosen Mounting Bolt
    G07226100Courtesy of NISSAN MOTOR CO., U.S.A.
  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 illustration.
        NOTE: The same parts are used but facing directions are different.
        Fig 5: Identifying Crankshaft Sprocket Flange Side (Larger Diameter Side Without Teeth) Face Installation Direction
        G07226101Courtesy of NISSAN MOTOR CO., U.S.A.
    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 illustration.

      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 illustration.
        Fig 6: Aligning Timing Chains Matching Marks
        G07226102Courtesy of NISSAN MOTOR CO., U.S.A.
  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
    G07226103Courtesy of NISSAN MOTOR CO., U.S.A.
    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 Gap Between Slack Guide And Mounting Bolt
    G07226104Courtesy of NISSAN MOTOR CO., U.S.A.
  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: Inserting Stopper Pin Into Body Hole
      G07226105Courtesy of NISSAN MOTOR CO., U.S.A.
  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 illustration.
        Fig 10: Identifying Oil Pump Sprocket Flange Side (Larger Diameter Side Without Teeth) Face Installation Direction
        G07226106Courtesy of NISSAN MOTOR CO., U.S.A.
        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.
      CAUTION: Secure the oil pump shaft with the two flat parts.
      Fig 11: Tightening Oil Pump Sprocket (Oil Pump Side) Nut
      G07226107Courtesy of NISSAN MOTOR CO., U.S.A.
    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: Checking Tension Is Applied To Oil Pump Drive Chain After Installing
        G07226108Courtesy of NISSAN MOTOR CO., U.S.A.
  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).
    • Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to front cover as shown in the illustration.

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

      Fig 13: Identifying Timing Chain Tensioner Cover And Front Cover
      G07226109Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Install oil filter (for valve timing control solenoid valve) (1) in the direction shown in the illustration, if removed.
    • Check that the oil filter does not protrude from the upper surface of front cover (2) after installation.
      Fig 14: Identifying Oil Filter
      G07226110Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Install front cover as per the following:
    1. Install new O-ring (1), (2) onto cylinder heads and cylinder block.
      Fig 15: Identifying O-Rings Of Cylinder Heads And Cylinder Block
      G07226111Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to front cover as shown in the illustration.

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

    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.
      Fig 16: Applying Continuous Bead Of Liquid Gasket With Tube Presser (Commercial Service Tool) To Front Cover
      G07226112Courtesy of NISSAN MOTOR CO., U.S.A.
    4. Tighten mounting bolts in numerical order as shown in the illustration.
      Fig 17: Identifying Front Cover Bolts Tightening Sequence
      G07226113Courtesy of NISSAN MOTOR CO., U.S.A.
      • There are three types of mounting bolts.

        A : 20 mm (0.79 in) 

        B : 45 mm (1.77 in) 

        C : 80 mm (3.15 in) 

    5. After all mounting bolts are tightened, retighten them in numerical order as shown in the illustration.
      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:
    Fig 18: Identifying Front Cover Bolts Type
    G07226114Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Install new O-rings (1) on front cover.
      Fig 19: Identifying O-Rings On Front Cover
      G07226115Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Install new seal rings (1) in shaft grooves.
      CAUTION: When replacing seal ring, replace all rings with new ones.
      Fig 20: Identifying Seal Rings In Shaft Grooves
      G07226116Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to valve timing control covers as shown in the illustration.

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

      Fig 21: Applying Continuous Bead Of Liquid Gasket With Tube Presser (Commercial Service Tool) To Valve Timing Control Covers
      G07226117Courtesy of NISSAN MOTOR CO., U.S.A.
    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.
    5. Tighten mounting bolts in numerical order as shown in the illustration.
      Fig 22: Identifying Valve Timing Control Covers Bolts Tightening Sequence
      G07226118Courtesy of NISSAN MOTOR CO., U.S.A.
  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 Specification: 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) 

      • Check the tightening angle by referencing to the notches. The angle between two notches is 90 degrees.
        Fig 23: Identifying Paint Mark On Crankshaft Pulley Aligning With Angle Mark On Crankshaft Pulley Bolt
        G07226119Courtesy of NISSAN MOTOR CO., U.S.A.
  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.
About FixVault