Hyundai Tucson (NX4) 2022-2025 Service Manual / Engine Mechanical System / Cooling System / Water pump

Hyundai Tucson: Cooling System / Water pump

- Components

1. Water pump pulley
2. Water pump
3. Water pump gasket
4. Water pump housing

- Removal and Installation

• Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.(Refer to General Information - "Lift and Support Points")

1.Disconnect the negative battery terminal.

2.Remove the engine room under cover.(Refer to the Engine And Transaxle Assembly - "Engine Room Under Cover")

3.Drain engine coolant by loosening the drain plug.(Refer to the Cooling System - "Coolant")

4.Remove the water pump belt.(Refer to the Drive Belt System - "Drive Belt")

5.Disconnect the water temperature sensor connector (A).

6.Remove the water pump pulley (A).

Tightening torque : 7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb-ft)

7.Remove the water pump (A).

Tightening torque :9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)

8.Remove the water pump housing (A) together with the gasket.

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

9.Install in the reverse order of removal.

• Always use the new gasket.

• Always use the new water inlet pipe O-ring.

• When installing the water pump, apply anti-freeze or soapy water to O-ring.

10.Fill engine coolant.(Refer to the Cooling System - "Coolant")

• Be sure to fill coolant following the ITM coolant filling method.

11.Check the coolant leakage by starting up the engine.

12.Recheck the coolant level.

- Troubleshooting

Symptoms

Possible Causes

Remedy

Coolant leakage

•	From the bleed hole of the water pump

Visually check

•	Check leaks after about ten-minute warming up.

•	If coolant still leaks, replace a water pump.

•	If leakage stops, reuse the water pump (Do not replace the pump with a new one).

•	From gaskets or bolts

•	Check the tightening of the water pump mounting bolts.

•	Retighten the mounting bolts.

•	Check damage of gaskets or inflow of dust.

•	Replace the gasket and clean dust off.

•	From outer surface of water pump

•	Check the material or any cracks of the water pump.

•	Poor material. If any crack found, replace the water pump.

Noise

•	From bearings

•	From mechanical seals

•	Impeller interference

Inspection with a stethoscope

•	After starting the engine, check noise with a stethoscope.

•	If there is no noise, reuse the water pump(do not replace it).

•	If there is any noise from the water pump, remove the drive belt and recheck.

Inspection after removing a drive belt

•	After removing a water pump and a drive belt, check noise again.

•	If there is noise, reuse the water pump. Check other drive line parts.

•	If there is no noise, replace the water pump with a new one.

Inspection after removing a water pump

•	After removing a water pump and a drive belt, check noise again.

•	If there is any interference between them, replace the water pump with a new one.

Overheating

•	Damaged impeller

•	Loosened impeller

Loosened impeller

•	Corrosion of the impeller wing

•	Check engine coolant.

•	Poor coolant quality / Maintenance check

•	Impeller seperation from the shaft

•	Replace the water pump.

Integrated Thermal Management Module (ITM)

- Components 1. Integrated Thermal management Module (ITM) 1. Water inlet pipe2. O-ring - Description The Integrated Thermal management Module (ITM) is a device that controls the c ...

Active Air Flap

- Description The AAF (Active Air Flap) is located between radiator grille and radiator.The AAF controls the motor properly and then the air flaps adjust air flow from the radiator grille.Durin ...

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