Kia Cadenza YG: Cooling System / Thermostat Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Engine Mechanical System / Cooling System / Thermostat Repair procedures

Removal
   
Removal 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.
(Refer to Cooling System - "Coolant")
2.
Disconnect the ratiator lower hose (A).

(Refer to Cooling System - "Radiator Hose")
3.
Remove the water inlet fitting (A) and the thermostat (B).

Inspection
1.
Immerse thermostat in water heated to over 95°C (203°F), then heat for at least 3 minutes to check valve lift.

   
•
Do not use water below 95°C (203°F).
•
Do not directly heat unit as this will damage thermostat.
2.
Check the valve opening temperature.
Valve opening temperature:
88±2°C (109.4±3.6°F)
Full opening temperature: 100°C (212°F)
If the valve opening temperature is not as specified, replace the thermostat.
3.
Check the valve lift.
Valve lift : 10mm (0.3937in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
Installation
1.
Place the thermostat in thermostat housing.
(1)
Install the thermostat with the jiggle valve upward.
(2)
Install a new thermostat (B).

2.
Install the water inlet fitting (A).
Tightening torque :
9.8 ~ 11.8N.m (1.0 ~ 1.2kgf.m, 7.2 ~ 8.7lb-ft)
3.
Connect the ratiator lower hose (A).

4.
Install the ratiator upper hose.
(Refer to Cooling System - "Radiator Hose")
5.
Fill with engine coolant.
6.
Start engine and check for leaks.

    Components 1. Water temperature control assembly2. Thermostat3. Water inlet fitting pipe

    Troubleshooting SymptomsPossible CausesRemedyCoolant leakage • From the thermostat gasket Check the mounting bolts • Check the torque of the mounting bolts • Retighten the bolts and check leakage again.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Lane Departure Warning System (LDWS) Unit Repair procedures

    Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the LDWS unit cover (A). 3. Remove the LDWS unit connector (A). 4. Remove the LDWS unit after widening the mounting clips. Installation 1. Install the LDWS unit. 2.

    Kia Cadenza YG 2016-2021 Service Manual: Components and Components Location

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