LEMON Manuals: Even more car manuals for everyone
Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Cooling System - 2.0L (Except HEV)) >> Water Temperature Control Assembly >> Repair Procedures >> Removal

Repair Procedures: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the battery negative terminal.
  2. Loosen the drain plug and drain the engine coolant.

    (Refer to Cooling System - "Coolant ")

  3. Remove the air cleaner.

    (Refer to Intake and Exhaust System - "AIR CLEANER ")

  4. Remove the intercooler inlet pipe & hose assembly, and the intercooler outlet pipe & hose assembly.

    (Refer to Intake and Exhaust System - "INTERCOOLER ")

  5. Remove the radiator upper (A) hose and lower hose (B).
    Fig 1: Removing Radiator Upper Hose And Lower Hose
    G12145148Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the connectors and then remove the wiring protector (A).
    Fig 2: Removing Wiring Protector
    G12145149Courtesy of KIA MOTORS AMERICA, INC.
  7. Disconnect the E.T.C cooler hoses (A), and the oil cooler hoses (B).
    Fig 3: Disconnecting ETC Cooler Hoses
    G12145150Courtesy of KIA MOTORS AMERICA, INC.
  8. Remove the water temperature control assembly (A).

    Tightening torque: 

    Nut: 18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

    Bolt: 14.7 - 19.6 N.m (1.5 - 2.0 kgf.m, 10.8 - 14.5 lb.ft)

    Fig 4: Removing Water Temperature Control Assembly
    G12145151Courtesy of KIA MOTORS AMERICA, INC.
  9. Install in the reverse order of removal.