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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Timing System (PHEV) >> Timing Chain >> Repair Procedures >> Removal

Repair Procedures: Removal

WARNING:
  • Be sure to read and follow the "General Safety Information and Caution" before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
  • Be sure to shut off the high voltage circuit according to the "HIGH VOLTAGE SHUT OFF PROCEDURE " before doing any work related with the high voltage system to avoid serious electrical injuries.
  1. Shut off the high voltage circuit.

    (Refer to Engine Mechanical System - "HIGH VOLTAGE SHUT OFF PROCEDURE ")

  2. Remove the cylinder head cover.

    (Refer to Cylinder Head Assembly - "CYLINDER HEAD COVER ")

  3. Set No. 1 cylinder to TDC (Top dead center) on compression stroke.
    1. Turn the crankshaft pulley and align its groove with the timing mark of the timing chain cover.
      G12353058Courtesy of KIA MOTORS AMERICA, INC.
    2. Check that the TDC marks of the intake and exhaust CVVT sprockets are in straight line on the cylinder head surface as shown in the illustration. If not, turn the crankshaft by one revolution (360°) more.
    G12353059Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Do not turn the crankshaft pulley counterclockwise.
  4. Remove the timing chain cover.

    (Refer to Timing System - "TIMING CHAIN COVER ")

  5. Remove the timing chain tensioner (A).
    G12353060Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Do not reuse the detached tensioner.
    • To reuse the tensioner, remove it, make the piston (A) to protrude to the maximum, push the piston (A) to the end, and then mount the stopper pin.

      At this time, the tensioner fixing pin should be placed in the same way as when the product was first delivered from the factory.

    G12353061Courtesy of KIA MOTORS AMERICA, INC.
    G12353062Courtesy of KIA MOTORS AMERICA, INC.
    G12353063Courtesy of KIA MOTORS AMERICA, INC.
    G12353064Courtesy of KIA MOTORS AMERICA, INC.
  6. Remove the timing chain tensioner arm (A).
    G12353065Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the timing chain (A).
    G12353066Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the timing chain guide (A).
G12353067Courtesy of KIA MOTORS AMERICA, INC.