A fan belt, often called a drive belt, is an essential
engine component in most vehicles. Fan belt failure can lead to decreased
performance or complete stalling.
Identification
Fan belts are flexible rubber belts connecting engine
components.
Uses
A fan belt connects the engine cooling fan to the alternator
and crankshaft pulley. Belts are also used to power components such as the air
conditioner compressor, the power steering pump and the water pump.
Function
When the engine is running, drive belts rotate and generate
power.
Types
While older cars employ several belts to operate different
parts of the engine, most modern cars only use one belt, called a serpentine
belt, to drive all components.
Considerations
Fan belts will wear down over time and break, particularly
if they come in contact with oil. Belts should be periodically checked to
ensure proper engine performance.
Warning
A worn fan belt will squeak and make noise during operation
to warn of impending failure.
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