Kia Cee'd: Cooling System / Thermostat Repair procedures

Removal
  
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.
1.
Drain engine coolant so that its level would be under the thermostat height.
2.
Remove the radiator lower hose.
(Refer to Cooling System - "Radiator Hose")
3.
Remove the water inlet fitting (A) and 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:
82±1.5°C (179.6±2.7°F)
Full opening temperature: 95°C (203°F)
If the valve opening temperature is not as specified, replace the thermostat.
3.
Check the valve lift.
Valve lift : 8mm(0.3in) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.
Installation
1.
Place the thermostat in the block.
Install the thermostat (B) with the jiggle valve upward.
2.
Install the water inlet fitting (A).
Tightening torque :
18.6 ~ 23.5N.m (1.9 ~ 2.4kgf.m, 13.7 ~ 17.4lb-ft)

3.
Fill with engine coolant.
4.
Start engine and check for leaks.
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