Kia Forte: Cooling System / Water pump

Kia Forte 2019-2020 (BD) Service Manual / Engine Mechanical System / Cooling System / Water pump

Components and components location
Components

1. Gasket
2. Water pump
3. Water pump pulley

Repair procedures
Removal
1.

Drain the engine coolant.

(Refer to Cooling System - "Coolant")

2.

Remove the drive belt.

(Refer to Drive Belt System - "Drive Belt")

3.

Remove the water pump pulley (A).

4.

Remove the water pump (A).

Inspection
1.

Check each part for cracks, damage or wear, and replace the coolant pump assembly if necessary.

2.

Check the bearing for damage, abnormal noise and sluggish rotation, and replace the coolant pump assembly if necessary.

3.

Check for coolant leakage. If coolant leaks from hole, the seal is defective. Replace the coolant pump assembly and gasket.

  

A small amount of seepage from the bleed hole is normal.

Installation
1.

Install the new gasket and water pump (A).

Tighten the bolts with the order below.

Tightening torque :

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

2.

Install the water pump pulley (A).

Tightening torque :

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

  

Tighten the bolts diagonally when installing.

3.

Install the drive belt.

(Refer to Drive Belt System - "Drive Belt")

4.

Fill with engine coolant.

(Refer to Cooling System - "Coolant")

5.

Start engine and check for leaks.

6.

Recheck engine coolant level.

Troubleshooting
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.


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