Kia Optima: Removal and Installation - Thermostat. Repair procedures - Cooling System - Engine Mechanical System - Kia Optima TF 2011-2021 Service ManualKia Optima: Removal and Installation

Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.
1. Drain engine coolant so its level is below thermostat.
2. Disconnect the radiator lower hose (A).

3. Remove water inlet fitting (C), gasket (B) and thermostat (A).

Tightening torque :

7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7lb-ft)


4. Installation is reverse order of removal.
Х Install the thermostat with the jiggle valve upward.
Х When assembling the thermostat, place the thermostat on the housing with a protrusion of thermostat matching with a groove of the housing and install the gasket and inlet fitting. Be careful the thermostat doesnТt get out of the groove on the housing.
5. Fill the engine coolant.
6. Start the engine and check for leaks.
7. Recheck the coolant level.

Thermostat. Repair procedures
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Inspection
1. Immerse the thermostat in water and gradually heat the water. 2. Check the valve opening temperature. Valve opening temperature: 82 ± 1.5∞C (17 ...

See also:

Electric Parking Brake (EPB) Repair procedures
Removal EPB Unit 1. Turn ignition OFF and disconnect the negative (-) battery cable. 2. Disconnect the EPB control unit connecter (A). 3. Remove the EPB control unit mounting nuts (B) ...

Battery
WARNING - Battery Dangers Always read the following instructions carefully when handling a battery. Keep lighted cigarettes and all other flames or sparks away from the battery. Hydrogen, ...

Removal
1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the crash pad lower panel and reinforcing panel. (Refer to the Body group- crash ...

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