Engine Cooling System: Removal & Installation Kia Rio III

Removal

Note. 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.
3. Remove the water inlet fitting (A) and thermostat (B).

Scheme 25

Scheme 26

1. Immerse the thermostat in water and gradually heat the water.
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.

Scheme 27

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.