Hyundai Tucson: Cooling System / Thermostat Repair procedures

Hyundai Tucson (LM) 2010-2015 Service Manual / Engine Mechanical System / Cooling System / Thermostat Repair procedures

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).

Remove water inlet fitting (A) and thermostat (B).

Tightening torque :

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

Installation is reverse order of removal.

•	Install the thermostat with the jiggle valve upward.

•	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 inlet fitting. Be careful the thermostat doesn’t get out of the groove on the housing.

•	Clean surface on the rubber packing contact surface.

5.	Fill the engine coolant.

6.	Start the engine and check for leaks.

7.	Recheck the coolant level.

Inspection

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

Check the valve opening temperature.

If the valve opening temperature is not as specified, replace the thermostat.

Valve opening temperature:

88 ± 1.5°C (190.4 ± 34.7°F)

Full opening temperature: 100°C (212°F)

Check the valve lift.

If the valve lift is not as specified, replace the thermostat.

Valve lift : 8 mm (0.3 in.) or more at 100°C (212°F)

Water pump Troubleshooting

Troubleshooting Water Pump SymptomsPossible CausesRemedyCoolant leakage • From the bleed hole of the water pump Visually check • Check leaks after about ten-minute warming up. • ...

Thermostat Troubleshooting

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

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: For safe AWD operation
Before driving Make sure all passengers are wearing seat belts. Sit upright and closer to the steering wheel than usual. Adjust the steering wheel to a position comfortable for you to drive. Driving on snow-covered or icy roads Start off slowly by applying the accelerator pedal gentl ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Troubleshooting
Troubleshooting SymptomSuspect AreaRemedyWater leaks from panoramaroof Deteriorated roof lid weatherstripReplaceExcessive roof lid-to-body clearance andImproperly fitted weatherstripAdjustWind noise around sunroofLoose or deformed deflector, gapsIn body workRetighten adjust or replaceNoise hear ...