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Home › Kia › 2017 › Optima Plug-In Hybrid EX › Repair and Diagnosis › Engine Mechanical › Mechanical › Timing System (PHEV) › Timing Chain Cover › 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.
NOTE:
  • Use fender covers to avoid damaging painted surfaces.
  • To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
  • To release the fuel system pressure before removing the engine assembly, start the engine with the fuel pump relay removed. And then turn off the ignition switch after engine stops.

Information 

Mark all wiring and hoses to avoid misconnection.

  1. Shut off the high voltage circuit.

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

  2. Remove the engine cover.

    (Refer to Engine and Transaxle Assembly - "ENGINE COVER ")

  3. Remove the RH front wheel.

    (Refer to Suspension System - "WHEEL ")

  4. Remove the engine room under cover.

    (Refer to Engine and Transaxle Assembly - "ENGINE ROOM UNDER COVER ")

  5. Drain the inverter coolant.

    (Refer to Hybrid Motor System - "COOLANT ")

  6. Remove the drive belt.

    (Refer to Drive Belt System - "DRIVE BELT ")

  7. Remove the drive belt tensioner.

    (Refer to Drive Belt System - "DRIVE BELT TENSIONER ")

  8. Remove the idler.

    (Refer to Drive Belt System - "IDLER ")

  9. Remove the crankshaft damper pulley.

    (Refer to Drive Belt System - "CRANKSHAFT DAMPER PULLEY ")

  10. Remove the intake manifold.

    (Refer to Intake and Exhaust System - "INTAKE MANIFOLD ")

  11. Remove the hybrid starter generator (HSG).

    (Refer to Hybrid Motor System - "HYBRID STARTER GENERATOR (HSG) ")

  12. Remove the cylinder head cover.

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

  13. Remove the oil pan.

    (Refer to Lubrication System - "OIL PAN ")

  14. Remove the engine mounting support bracket.
    1. Install the jack under the edge of the lower crankcase to support the engine.
      NOTE: Put the rubber block between jack and lower crankcase to avoid damaging the lower crankcase.
    2. Disconnect the ground cable (A) and then remove the engine mounting support bracket (B).

    Tightening Torque 

    Ground cable: 10.8 - 13.7 N.m (1.1 - 1.4 kgf.m, 8.0 - 10.1 lb.ft)

    Support bracket: 88.3 - 107.9 N.m (9.0 - 11.0 kgf.m, 65.1 - 79.6 lb.ft)

    G12353051Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Always use new nuts.
  15. Remove the front engine hanger (A).
    G12353052Courtesy of KIA MOTORS AMERICA, INC.
  16. Remove the timing chain cover (A).
G12353053Courtesy of KIA MOTORS AMERICA, INC.
NOTE:
  • Be careful not to damage the contact surfaces of cylinder block, cylinder head and timing chain cover.
  • Do not disassemble the oil pump (A) from timing chain cover because it is supplied as timing chain cover & oil pump assembly.
G12353054Courtesy of KIA MOTORS AMERICA, INC.
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