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Home >> Genesis >> 2024 >> GV70 2.5T >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Cylinder Head Assembly - 2.5L >> CVVT And Camshaft >> Installation >> CVVT and Camshaft

CVVT and Camshaft

  1. Install the camshaft.
    1. Install the camshafts (A).
      G16846393Courtesy of HYUNDAI MOTOR AMERICA

      Information 

      • When installing the camshaft, apply engine oil to the cam carrier journal and then apply engine oil after installing the camshaft.
    2. Install the camshaft bearing caps (A).

      Tightening torque:  Step 1

      M6: 4.9 - 7.8 N.m (0.5 - 0.8 kgf.m, 3.6 - 5.7 lb-ft)

      M8: 9.8 - 11.7 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.6 lb-ft)

      Step 2

      M6: 11.7 - 13.7 N.m (1.2 - 1.4 kgf.m, 8.6 - 10.1 lb-ft)

      M8: 18.6 - 22.5 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb-ft)

      G16846394Courtesy of HYUNDAI MOTOR AMERICA
      NOTE:
      • Be careful not to change the position and direction of camshaft bearing caps.
      NOTE:
      • Install the camshaft bearing caps in the sequence below.
      Fig 1: Camshaft Bearing Caps Bolts (Tightening Sequence)
      G16846395Courtesy of HYUNDAI MOTOR AMERICA
  2. Install the intake E-CVVT assembly (A) and exhaust CVVT assembly (B).

    Tightening torque 

    Intake E-CVVT Assembly: 32.4 - 36.3 N.m (3.3 - 3.7 kgf.m, 23.9 - 26.8 lb-ft) + [43 - 47°]/73.5 - 83.3 N.m (7.5 - 8.5 kgf.m, 54.2 - 61.4 lb-ft)

    Exhaust CVVT Assembly: 22.5 - 26.4 N.m (2.3 - 2.7 kgf.m, 16.6 - 19.5 lb-ft) + 28 - 32°/107.9 - 117.7 N.m (11.0 - 12.0 kgf.m, 79.6 - 86.8 lb-ft)

    G16846396Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • When installing the CVVT assembly bolt, hold the camshaft (A) with a wrench to prevent the camshaft from rotating.
    G16846397Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Tighten the bolt when the E-CVVT stopper (A) is matched with the camshaft slot (B).
    G16846398Courtesy of HYUNDAI MOTOR AMERICA
  3. Install the high pressure fuel pump bracket (A).

    Tightening torque:  18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.3 lb.ft)

    G16846399Courtesy of HYUNDAI MOTOR AMERICA
  4. Install the timing chain.

    (Refer to Timing System - "TIMING CHAIN ")

  5. Clean the E-CVVT motor plug mounting surface (A) with oil cleaner.
    G16846400Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • If the surface is not cleaned, E-CVVT motor plug may be separated due to diminished separation force from residual oil.
    • When spraying oil cleaner, block around the motor shaft inlet and rotor gap with a clean towel to prevent inflow of oil from flowing into the rotor gap.
  6. When reusing the E-CVVT cover, inspect the below items.
    1. If there is sign of leakage from inside the E-CVVT cover, replace it with a new one.
    2. Check the connector brush wear condition.

      Specification:  Over 5 mm (0.1969 in.)

      G16846401Courtesy of HYUNDAI MOTOR AMERICA

      If measurement is below specification, replace the E-CVVT cover with a new one.

    3. Check for damaged oil seal (A) and replace any damaged E-CVVT cover with a new one.
      G16846402Courtesy of HYUNDAI MOTOR AMERICA
    4. After inspecting E-CVVT, if no problem is found, replace the o-ring (A) with a new one.
      G16846403Courtesy of HYUNDAI MOTOR AMERICA
  7. Install the E-CVVT cover.
    1. Apply engine oil to the oil seal lip (A).
      G16846404Courtesy of HYUNDAI MOTOR AMERICA
      NOTE:
      • When applying oil, keep the connector brush (A) clean from foreign materials.
      G16846405Courtesy of HYUNDAI MOTOR AMERICA
    2. Insert SST (09243-C2000) into the E-CVVT motor shaft.
      G16846406Courtesy of HYUNDAI MOTOR AMERICA
      NOTE:
      • Correctly mount SST onto the motor shaft.
    3. Slowly push the E-CVVT cover (A) until it is flushed with the timing chain cover surface.
      G16846407Courtesy of HYUNDAI MOTOR AMERICA
      NOTE:
      • Installing the E-CVVT cover without SST may cause oil leakage inside the E-CVVT motor due to damaged or separated E-CVVT oil seal.
    4. Pre-tighten the bolts in the below sequence, and then remove the SST (09243-2C000).

      Tightening torque:  0.9 - 1.9 N.m (0.1 - 0.2 kgf.m, 0.7 - 1.4 lb.ft)

      Fig 2: E-CVVT Cover Bolts Tightening Sequence
      G16846408Courtesy of HYUNDAI MOTOR AMERICA
  8. Install the E-CVVT plug.
    1. By using SST (09243-C2000), insert the plug into the E-CVVT cover hole.
      G16846409Courtesy of HYUNDAI MOTOR AMERICA
    2. Mount the stopper of SST (09243-C2000) so that it sits at the end of E-CVVT motor shaft.
      G16846410Courtesy of HYUNDAI MOTOR AMERICA
  9. Inspect the pressed depth of E-CVVT plug.
    1. By using a steel ruler, measure the distance from E-CVVT cover center boss to the end of motor shaft (1).
    2. By using a steel ruler, measure the distance from E-CVVT cover center boss to the end of E-CVVT plug (2).
      G16846411Courtesy of HYUNDAI MOTOR AMERICA
    3. Calculate the pressed depth (3) of motor plug.

      If out of specification, reinstall after replacing the E-CVVT plug with a new one.

      Pressed depth:  (3) = (2) - (1)

      Specification  - 2.1 mm (0.0433 - 0.0826 in.)

  10. Insert the E-CVVT cover plug so that the protrusion reach to E-CVVT cover groove correctly.
    G16846412Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • Check how much protrude after installing the E-CVVT cover plug.
      G16846413Courtesy of HYUNDAI MOTOR AMERICA
    • Be careful that the plug is not inserted inside E-CVVT cover beyond the regulated range.
    NOTE:
    • When replacing or reinstalling the electronic E-CVVT assembly, make sure to reset the value of learning using additional function menu of diagnostic tool. (Refer to Engine Control/Fuel System - "ELECTRONIC E-CVVT MOTOR ") additional function menu of diagnostic tool.
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