Ford YC3Z-8501-AB Pump Assembly - Water

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Water pump failure can cause overheating and serious damage to the engine. There are three ways to check the operation of the water pump while it's installed on the engine. If any one of these quick checks indicates water pump problems, it should be replaced immediately. A seal protects the water pump impeller shaft bearing from contamination by engine coolant. If this seal fails, a weep hole in the water pump snout will leak coolant. Use an inspection mirror to look at the hole, which is located on the underside of the pump. If the weep hole is leaking, the water pump impeller shaft bearing will soon fail. Replace the water pump immediately. A small amount of gray discoloration is normal. A wet area or heavy brown deposits indicate pump seal failure. Besides contamination by coolant after a seal failure, the water pump impeller shaft bearing can also prematurely wear out. If the pump is emitting a screeching sound, the shaft bearing has failed. Replace the water pump immediately. Do not confuse drivebelt noise with bearing noise. Loose or glazed drivebelts may also emit a high-pitched squealing noise. To diagnose excessive bearing wear before the bearing actually fails, grasp the water pump pulley (with the drivebelt removed) and try to force it up-and-down or from side-to-side. If the pulley can be moved up-and-down or side-to-side, the bearing is nearing the end of its service life. Replace the water pump.

Remove the fan and fan shroud (or fan stator on 6.0L and 6.4L diesel engines).