Video tutorial on how to diagnose a faulty water pump on a vehicle. This video consists of two different areas which include gaskets and the bearing. Water pump models do vary between vehicle makes and models. Some are equipped with a mechanical clutch fan such as what is shown in the video, others do not. Some water pumps can be driven by an accessories belts, other by a timing belt, they can also be hidden under a timing belt cover if your vehicle has a timing belt engine. Any faults with the water pump could be just routine maintenance or causes by other issue under the hood which in turn create premature failure of the pump. This particular tutorial was done on a 2003 Dodge Dakota.
Symptoms of water pump failure:
-leaking gasket between the water pump housing and engine block
-worn seal around the shaft bearing which causes the coolant to leak out the bearing vent hole
-worn out bearing which would make a howling or grinding noise
-excessive "play" in the water pump shaft
-regular usage which causes wear over time (routine maintenance)
-broken mechanical fan which causes the water pump shaft to be off balance
-worn mechanical clutch fan assembly which causes the water pump shaft to be off balance
-leaking water pump shaft seal which washes out the lubricant within the bearings
-worn/dried out gaskets/seals that cause a coolant leak
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