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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (5.6L) (Except Hybrid) >> Unit Disassembly And Assembly >> Camshaft >> Disassembly and Assembly >> Assembly

Disassembly and Assembly: Assembly

CAUTION: Do not reuse washers.
  1. Install valve lifter.
    • Install it in the original position.
  2. Install camshaft (EXH).
    • Distinction between camshaft (EXH) is performed with the identification mark.
      GNSJPBIA2130Z-130Courtesy of NISSAN NORTH AMERICA, INC.

      SYMBOL

      : Engine front

      Bank

      Paint marks

      Identification rib (E)

      M1 (C)

      M2 (D)

      Bank 2 (A)

      No

      Brown

      Yes

      Bank 1 (B)

      No

      Brown

      No
  3. Install VVEL ladder assembly as per the following:
    1. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the cylinder head as shown in the figure, below.
      GNSJPBIA2131Z-131Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 1

      B

      : Bank 2

      c

      : 3.4 - 4.4 mm (0.134 - 0.173 in)

      SYMBOL

      : Engine front

      Use Genuine RTV Silicone Sealant or an equivalent. Refer to Recommended Chemical Products and Sealants .

    2. Tighten mounting bolts in the following step, in numerical order as shown, below.
      Fig 1: VVEL Ladder Assembly Mounting Bolt Tightening Sequence
      GNSJPBIA2128Z-128Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 2

      B

      : Bank 1

      SYMBOL

      : Engine front
      CAUTION: Do not reuse washers.
      1. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 1.96 N.m (0.20 kg-m, 12 INCH-lb)
      2. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 5.88 N.m (0.60 kg-m, 48 INCH-lb)
      3. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 10.4 N.m (1.1 kg-m, 48 INCH-lb)
  4. Install camshaft sprockets and timing chains. Refer to Exploded View .
  5. Install actuator bracket (rear) as per the following:
    1. Refer to the figure to replace new dowel pins (2), if removed.
      GNSJPBIA2474Z-474Courtesy of NISSAN NORTH AMERICA, INC.

      1

      : Actuator bracket

      3

      : VVEL ladder assembly

      a

      : 4.0 - 6.0 mm (0.157 - 0.236 in)
    2. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the actuator bracket (rear) as shown in the figure, below.
      GNSJPBIA2132Z-132Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 2

      B

      : Bank 1

      c

      : 3.4 - 4.4 mm (0.134 - 0.173 in)

      SYMBOL

      : Engine front

      Use Genuine RTV Silicone Sealant or an equivalent. Refer to Recommended Chemical Products and Sealants .

      CAUTION: Never apply gasket to the oil passage.
    3. Tighten mounting bolts in the following steps, in numerical order as shown, below.
      Fig 2: Actuator Bracket (Rear) Mounting Bolt Tightening Sequence
      GNSJPBIA2125Z-125Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 2

      B

      : Bank 1

      SYMBOL

      : Engine front
      1. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 1.96 N.m (0.20 kg-m, 1 ft-lb)
      2. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 5.88 N.m (0.60 kg-m, 4 ft-lb)
      3. Tighten bolts in numerical order as shown, above.

        SYMBOL

        : 31.4 N.m (3.2 kg-m, 23 ft-lb)
  6. Install new VVEL actuator sub assembly as per the following:
    CAUTION: Regarding replacement, because VVEL actuator sub assembly and VVEL control shaft position sensor are controlled on a one-on-one basis, replace them as a set.
    NOTE:
    • VVEL actuator arm (B) is factory-fixed at 10 degrees from the small lift with a holding jig (A).
      GNSJPBIA1137Z-137Courtesy of NISSAN NORTH AMERICA, INC.
    • The holding jig is supplied in the new VVEL actuator sub assembly.
    CAUTION:
    • Never disassemble VVEL actuator sub assembly. [NEVER loosen actuator motor mounting bolts (A) shown in the figure]
      GNSJPBIA1120Z-120Courtesy of NISSAN NORTH AMERICA, INC.
    • Never impact VVEL actuator sub assembly.
    1. Move control shaft to the position of small lift stopper.
      GNSJPBIA2134Z-134Courtesy of NISSAN NORTH AMERICA, INC.
      • The position where a part of the stopper of control shaft contacts VVEL ladder bracket.

      1

      : VVEL ladder assembly (bank 2)

      2

      : VVEL ladder assembly (bank 1)

      A

      : Stopper of control shaft

      SYMBOL

      : Small lift side
      CAUTION: Be careful not to damage the stopper surface.
      • If control shaft cannot be moved, set crankshaft in position referring to the information below. (To displace cam nose)

        Bank 1

        : Turn 360 degrees from No. 1 cylinder at TDC

        Bank 2

        : No. 1 cylinder at TDC
    2. Hold two flat areas of control shaft with a wrench, and rotate the control shaft (10 degrees from the stopper) to the large lift side. (This is for aligning the bolt hole of control shaft and the hole of VVEL actuator arm.)
      GNSJPBIA2139Z-139Courtesy of NISSAN NORTH AMERICA, INC.

      1

      : VVEL actuator sub assembly (bank 2)

      A

      : Control shaft

      B

      : View B

      C

      : Holding jig

      d

      : 10 degrees

      SYMBOL

      : Large lift side
      NOTE: The figure shows an example of bank 2.
    3. Apply a continuous bead of liquid gasket with tube presser (commercial service tool) to the VVEL actuator sub assembly as shown in the figure, below.
      GNSJPBIA2140Z-140Courtesy of NISSAN NORTH AMERICA, INC.

      1

      : VVEL actuator sub assembly (bank 2)

      2

      : VVEL actuator sub assembly (bank 1)

      a

      : 4.0 - 5.6 mm (0.157 - 0.220 in)

      b

      : 3.4 - 4.4 mm (0.134 - 0.173 in)

      Use Genuine RTV Silicone Sealant or an equivalent. Refer to Recommended Chemical Products and Sealants .

      CAUTION: Never apply gasket to the oil passage.
    4. Install new VVEL Actuator Sub Assembly.
      • Tighten mounting bolts in the following step, in numerical order as shown, below.
      Fig 3: VVEL Actuator Sub Assembly Tightening Sequence
      GNSJPBIA2127Z-127Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 1

      B

      : Bank 2
      CAUTION:
      • When installing, be careful with VVEL actuator sub assembly (bank 1) mounting bolt No. 4 because its length is different.
      • Be sure to check that the VVEL actuator sub assembly is in contact with the cylinder head before tightening the mounting bolts.
    5. Remove holding jig.
    6. Check that VVEL actuator arm bolt hole is aligned with control shaft tapped hole. If it is not aligned, turn control shaft for alignment.
      GNSJPBIA2141Z-141Courtesy of NISSAN NORTH AMERICA, INC.
      CAUTION: Never give an impact to the magnet part. (A)
    7. Fix two flat areas (C) of control shaft with a wrench to tighten mounting bolts of control shaft.
      GNSJPBIA2143Z-143Courtesy of NISSAN NORTH AMERICA, INC.

      A

      : Bank 2

      B

      : Bank 1

      SYMBOL

      : Engine front
      CAUTION:
      • During the operation, never allow a wrench to interfere with other parts.
      • Fix control shaft to prevent the interference of the stopper surface.
  7. Install new VVEL control shaft position sensor as per the following:
    CAUTION: Regarding replacement, because VVEL actuator sub assembly and VVEL control shaft position sensor are controlled on a one-on-one basis, replace them as a set.
    1. Apply engine oil to O-ring or contact surface of O-ring.
    2. Align matching marks (B) of VVEL control shaft position sensor and upper housing.
      GNSJPBIA2142Z-142Courtesy of NISSAN NORTH AMERICA, INC.
      • Face connector toward matching mark (A).
    3. Temporarily tighten bolt.
    4. Adjust VVEL control shaft position sensor after setting the engine assembly in the vehicle. Refer to Description .
      CAUTION: Be sure to adjust VVEL control shaft position sensor.
    5. After adjusting VVEL control shaft position sensor, tighten bolts to the specified torque.
  8. Install actuator cover.
  9. Inspect the valve clearance. Refer to Inspection .
  10. Install in the reverse order of removal.
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