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Home >> Kia >> 2020 >> Optima EX Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 46 (Timing System - 2.4L (Except HEV)) >> Timing Chain Cover >> Repair Procedures >> Installation

Repair Procedures: Installation

WARNING: This page is about a different variant/trim than selected.
  1. Install the timing chain cover.
    1. Using a gasket scraper, remove all the old packing material from the gasket surfaces.
    2. The sealant locations on chain cover and on counter parts (cylinder head, cylinder block, and ladder frame) must be free of engine oil and etc.
    3. Before assembling the timing chain cover, liquid sealant Loctite 5900H or equivalent should be applied on the gap between camshaft front bearing cap, cylinder head and cylinder block. The part must be assembled within 5 minutes after sealant was applied.

      Bead width:  2.0 - 3.0 mm (0.08 - 0.12 in.)

      G12932534Courtesy of KIA MOTORS AMERICA, INC.
    4. After applying liquid sealant Loctite 5900H or equivalent on the timing chain cover.

      The part must be assembled within 5 minutes after sealant was applied. Continuous bead of sealant should be applied to prevent any path of oil leakage.

      Bead width:  2.0 - 3.0 mm (0.08 - 0.12 in.)

      G12932535Courtesy of KIA MOTORS AMERICA, INC.
    5. The dowel pins on the cylinder block and holes on the timing chain cover should be used as a reference in order to assemble the timing chain cover to be in exact position.

      Tightening torque 

      M6 X 25 bolt:

      7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb.ft)

      M8 X 28 bolt:

      18.6 - 22.6 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb.ft)

    G12932536Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: The engine starting or pressure tests should not be performed within 30 minutes after the timing chain cover was assembled.
  2. Install the front oil seal.

    (Refer to Timing System - "FRONT OIL SEAL ")

  3. Install the drive belt tensioner.

    (Refer to Timing System - "DRIVE BELT TENSIONER ")

  4. Remove it by breaking the center of E-CVVT motor plug (A).
    G12932537Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Remove after 30 minutes of switching "OFF" the ignition to drain out the oil inside the E-CVVT motor plug.
    • Do not tilt the front of engine (timing chain cover side) downward as residual oil may flow out during E-CVVT motor plug removal.
    • If oil flows out during E-CVVT motor plug removal, wipe off immediately and block the motor shaft inlet with a clean towel.
  5. Clean the E-CVVT motor plug mounting surface (A) with oil cleaner.
    G12932538Courtesy of KIA MOTORS AMERICA, INC.
    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 for worn connector brush.

      Specification:  Over 5 mm (0.1969 in.)

      G12932539Courtesy of KIA MOTORS AMERICA, INC.

      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.
      G12932540Courtesy of KIA MOTORS AMERICA, INC.
    4. After inspecting E-CVVT, if no problem is found, replace the o-ring (A) with a new one.
      G12932541Courtesy of KIA MOTORS AMERICA, INC.
  7. Install the E-CVVT cover.
    1. Apply engine oil on oil seal lip (A).
      G12932542Courtesy of KIA MOTORS AMERICA, INC.
      NOTE: When applying oil, keep the connector brush (A) clean from foreign materials.
      G12932543Courtesy of KIA MOTORS AMERICA, INC.
    2. Insert SST (09243-C2000) into the E-CVVT motor shaft.
      G12932544Courtesy of KIA MOTORS AMERICA, INC.
      NOTE: Correctly mount SST onto the motor shaft.
    3. Slowly push the E-CVVT cover (A) until it is flush with the timing chain cover surface.
      G12932545Courtesy of KIA MOTORS AMERICA, INC.
      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-C2000).

      Tightening torque: 

      1.0 - 2.0 N.m (0.1 - 0.2 kgf.m, 0.7 - 1.4 lb.ft)

      Fig 1: E-CVVT Cover Bolts Tightening Sequence
      G12932546Courtesy of KIA MOTORS AMERICA, INC.
    5. Tighten the bolts to the specified torque in the sequence below.

      Tightening torque: 

      9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    Fig 2: E-CVVT Cover Bolts Tightening Sequence
    G12932547Courtesy of KIA MOTORS AMERICA, INC.
  8. Install the E-CVVT plug.
    1. By using SST (09243-C2000), insert the plug (A) into the E-CVVT cover hole.
      G12932548Courtesy of KIA MOTORS AMERICA, INC.
      NOTE: Do not reuse a E-CVVT motor plug.
    2. Mount the stopper of SST so that it sits at the end of E-CVVT motor shaft.
    G12932549Courtesy of KIA MOTORS AMERICA, INC.
  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 ().
    2. By using a steel ruler, measure the distance from E-CVVT cover center boss to the end of E-CVVT plug ().
      G12932550Courtesy of KIA MOTORS AMERICA, INC.
    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:  1.9 - 2.1 mm (0.0748 - 0.0827 in.)

  10. Insert the E-CVVT cover plug so that the protrusion (A) reach to E-CVVT cover groove correctly.
    G12932551Courtesy of KIA MOTORS AMERICA, INC.
    G12932552Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Check how much protrude after installing the E-CVVT plug.
      G12932553Courtesy of KIA MOTORS AMERICA, INC.
    • Be careful that the plug is not inserted inside E-CVVT cover beyond the regulated range.
  11. Install the engine support bracket (A).

    Tightening torque: 

    Bolt B: 4.0 - 4.5 kgf.m

    Bolt C: 2.0 - 2.5 kgf.m

    1. Install in order of 1→2→3 temporary.
    2. Turn the bracket counterclockwise and install the bolt 1.
    3. Install in order of 2→3→4→5→6.
    Fig 3: Engine Support Bracket Bolts Tightening Sequence
    G12932554Courtesy of KIA MOTORS AMERICA, INC.
  12. Install the other parts in the reverse order of removal.
NOTE:
  • Refill engine with engine oil.
  • Refill a transaxle with fluid.
  • Refill a radiator and a reservoir tank with engine coolant.
  • Clean battery posts and cable terminals and assemble.
  • Inspect for fuel leakage.
    • After assemble the fuel line, turn on the ignition switch (do not operate the starter) so that the fuel pump runs for approximately two seconds and fuel line pressurizes.
    • Repeat this operation two or three times, then check for fuel leakage at any point in the fuel line.
  • Refill radiator and reservoir tank with engine coolant.
  • Bleed air from the cooling system.